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30 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
unknown
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d5303b8ab8 |
Fix for bug #12704 "Server crashes during trigger execution".
This bug occurs when some trigger for table used by DML statement is created or changed while statement was waiting in lock_tables(). In this situation prelocking set which we have calculated becames invalid which can easily lead to errors and even in some cases to crashes. With proposed patch we no longer silently reopen tables in lock_tables(), instead caller of lock_tables() becomes responsible for reopening tables and recalculation of prelocking set. mysql-test/t/trigger.test: Added tests for bug #12704 "Server crashes during trigger execution". Unfortunately these tests rely on the order in which tables are locked by statement so they are non-determenistic and therefore should be disabled. sql/lock.cc: mysql_lock_tables(): Now instead of always reopening altered or dropped tables by itself mysql_lock_tables() can notify upper level and rely on caller doing this. sql/mysql_priv.h: Now mysql_lock_tables() can either reopen deleted or altered tables by itself or notify caller about such situation through 'need_reopen' argument and rely on it in this. Also lock_tables() has new 'need_reopen' out parameter through which it notifies caller that some tables were altered or dropped so he needs to reopen them (and rebuild prelocking set some triggers may change or simply appear). sql/sp.cc: sp_add_used_routine(): To be able to restore LEX::sroutines_list to its state right after parsing we now adjust LEX::sroutines_list_own_last/sroutines_list_own_elements when we add directly used routine. sp_remove_not_own_routines(): Added procedure for restoring LEX::sroutines/sroutines_list to their state right after parsing (by throwing out non-directly used routines). sp_cache_routines_and_add_tables_for_view()/sp_update_stmt_used_routines(): We should use LEX::sroutines_list instead of LEX::sroutines as source of routines used by view, since LEX::sroutines is not availiable for view on second attempt to open it (see comment in open_tables() about it). sql/sp.h: sp_remove_not_own_routines(): Added procedure for restoring LEX::sroutines/sroutines_list to their state right after parsing (by throwing out non-directly used routines). sql/sp_head.cc: Removed assert which is no longer always true. sql/sql_base.cc: reopen_table(): When we re-open table and do shallow copy of TABLE object we should adjust pointers to it in associated Table_triggers_list object. Removed nil operation. open_tables(): Now this function is able to rebuild prelocking set for statement if it is needed. It also correctly handles FLUSH TABLES which may occur during its execution. lock_tables(): Instead of allowing mysql_lock_tables() to silently reopen altered or dropped tables let us notify caller and rely on that it will do reopen itself. This solves the problem when trigger suddenly appears or changed during mysq_lock_tables(). close_tables_for_reopen(): Added routine for properly preparing for reopening of tables and recalculation of set of prelocked tables. sql/sql_handler.cc: Here we let mysql_lock_tables() to reopen dropped or altered tables by itself. sql/sql_insert.cc: Here we let mysql_lock_tables() to reopen dropped or altered tables by itself. sql/sql_lex.cc: LEX: Added 'sroutines_list_own_last' and 'sroutines_list_own_elements' members which are used for keeping state in which 'sroutines_list' was right after statement parsing (and for restoring of this list to this state). sql/sql_lex.h: LEX: Added 'sroutines_list_own_last' and 'sroutines_list_own_elements' members which are used for keeping state in which 'sroutines_list' was right after statement parsing (and for restoring of this list to this state). Added chop_off_not_own_tables() method to simplify throwing away list of implicitly used (prelocked) tables. sql/sql_prepare.cc: Now instead of silently reopening altered or dropped tables in lock_tables() we notify caller and rely on that the caller will reopen tables. sql/sql_table.cc: Here we let mysql_lock_tables() to reopen dropped or altered tables by itself. sql/sql_trigger.cc: Added Table_triggers_list::set_table() method to adjust Table_triggers_list to new pointer to TABLE instance. sql/sql_trigger.h: Added Table_triggers_list::set_table() method to adjust Table_triggers_list to new pointer to TABLE instance. sql/sql_update.cc: Now instead of silently reopening altered or dropped tables in lock_tables() we notify caller and rely on that the caller will reopen tables. |
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c910050a76 |
Implement WL#2661 "Prepared Statements: Dynamic SQL in Stored Procedures".
The idea of the patch is to separate statement processing logic,
such as parsing, validation of the parsed tree, execution and cleanup,
from global query processing logic, such as logging, resetting
priorities of a thread, resetting stored procedure cache, resetting
thread count of errors and warnings.
This makes PREPARE and EXECUTE behave similarly to the rest of SQL
statements and allows their use in stored procedures.
This patch contains a change in behaviour:
until recently for each SQL prepared statement command, 2 queries
were written to the general log, e.g.
[Query] prepare stmt from @stmt_text;
[Prepare] select * from t1 <-- contents of @stmt_text
The chagne was necessary to prevent [Prepare] commands from being written
to the general log when executing a stored procedure with Dynamic SQL.
We should consider whether the old behavior is preferrable and probably
restore it.
This patch refixes Bug#7115, Bug#10975 (partially), Bug#10605 (various bugs
in Dynamic SQL reported before it was disabled).
mysql-test/r/not_embedded_server.result:
Since we don't want to log Dynamic SQL in stored procedures,
now the general log gets only one log entry per SQL statement.
mysql-test/r/sp-error.result:
- remove obsolete tests
- a better error message for the case when a stored procedure that
returns a result set is called from a function
mysql-test/r/trigger.result:
- a better error message for the case when a stored procedure that
returns a result set is called from a trigger
mysql-test/t/sp-error.test:
- a better error message for the case when a stored procedure that
returns a result set is called from a function.
- move the comment to its place (end of file).
mysql-test/t/trigger.test:
- a better error message for the case when a stored procedure that
returns a result set is called from a trigger
sql/item_func.cc:
- we need to pass sql_command explicitly to get_var_with_binlog, because
when creating a query for SQL prepared statement thd->lex->sql_command
points at SQLCOM_EXECUTE, which is not listed in the list of update
queries.
sql/log_event.h:
- remove an extra copy of the previous sentence
sql/mysql_priv.h:
- fix declarations of sql_prepare.cc API
sql/share/errmsg.txt:
- a new error message, when one attempts to execute a prepared statement
which is currently being executed (this can happen only in Dynamic SQL
at the moment).
sql/sp_head.cc:
- extend sp_multi_results_command to return different flags for a
command (and rename it)
- add support for SQLCOM_PREPARE,SQLCOM_EXECUTE, SQLCOM_DEALLOCATE
to sp_get_flags_for_command
- replace multiple boolean sp_head members with uint m_flags
- a fix for a crash when user variables are used in a stored procedure
and binlog is on. A temporary fix for Bug#12637 "SP crashes the server
if it has update query with user var & binlog is enabled", which actually
stands for stored functions: now instead of a crash we break
replication if a user variable is used in a stored function which
is executed in prelocked mode.
sql/sp_head.h:
- replace multiple boolean flags of sp_head with uint m_flags;
- add flag CONTAINS_DYNAMIC_SQL
- use this flag to error if a stored procedure with Dynamic SQL is
called from a function or trigger.
sql/sql_class.cc:
- Statement_map::insert should not delete a statement if it exists,
now it's done externally to be able to handle the case when the
statement being deleted is in use.
- remove extra code (free_list is already reset in free_items)
sql/sql_lex.cc:
- add lex->stmt_prepare_mode; we can't rely on thd->command any more,
because we don't reset it any more (Dynamic SQL requirement is that
PS are as little intrusive as possible).
sql/sql_lex.h:
- declare bool LEX::stmt_prepare_mode
sql/sql_parse.cc:
- move prepared statement code to sql_prepare.cc
- change declarations (refactored code)
- better error message when one attempts to use Dynamic SQL or a
stored procedure that returns a result set in a function or trigger.
sql/sql_prepare.cc:
- major refactoring to ensure PREPARE/EXECUTE commands do not reset global THD
state and allow their use in stored procedures.
- add Prepared_statement::flags and use it to ensure no recursive execution
of a prepared statement is possible
- better comments
sql/sql_yacc.yy:
- enable PREPARE/EXECUTE/DEALLOCATE in stored procedures
- produce an error message on attempt to use PREPARE/EXECUTE/DEALLOCATE
in a stored function or trigger
mysql-test/r/sp-dynamic.result:
- sp-dynamic.test results
mysql-test/t/sp-dynamic.test:
- a new test for PREPARE/EXECUTE/DEALLOCATE in stored procedures.
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unknown
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6658fb34e5 |
Merge bk-internal.mysql.com:/home/bk/mysql-5.0
into mysql.com:/home/dlenev/src/mysql-5.0-bg11896 mysql-test/t/sp-error.test: Auto merged mysql-test/t/trigger.test: Auto merged sql/sql_base.cc: Auto merged mysql-test/r/trigger.result: Manual merge. sql/share/errmsg.txt: Manual merge. |
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b1921c85ba |
Fix for bug #11896 "Partial locking in case of recursive trigger definitions".
If we are in stored function or trigger we should ensure that we won't change table that is already used by calling statement (this can damage table or easily cause infinite loops). Particularly this means that recursive triggers should be disallowed. mysql-test/r/sp-error.result: Added tests checking that in functions we don't allow to update tables which are used by statements which invoke these functions. mysql-test/r/trigger.result: Added test for bug #11896 "Partial locking in case of recursive trigger definitions". mysql-test/t/sp-error.test: Added tests checking that in functions we don't allow to update tables which are used by statements which invoke these functions. mysql-test/t/trigger.test: Added test for bug #11896 "Partial locking in case of recursive trigger definitions". sql/share/errmsg.txt: Added error messages for complaining about situations when in function or trigger we try to change table which is used in statement invoking this function or trigger. sql/sql_base.cc: open_table(): If we are in stored function or trigger we should ensure that we won't change table that is already used by calling statement (this can damage table or easily cause infinite loops). So if we are opening table for writing, we should check that it is not already open by some calling stamement. |
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e8b26c0903 | Fixed typo in error numbers | ||
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a914b5274f |
Save and clear run context before executing a stored function or trigger and restore it afterwards.
This allows us to use statement replication with functions and triggers The following things are fixed with this patch: - NOW() and automatic timestamps takes the value from the main event for functions and triggers (which allows these to replicate with statement level logging) - No side effects for triggers or functions with auto-increment values(), last_insert_id(), rand() or found_rows() - Triggers can't return result sets Fixes bugs: #12480: NOW() is not constant in a trigger #12481: Using NOW() in a stored function breaks statement based replication #12482: Triggers has side effects with auto_increment values #11587: trigger causes lost connection error mysql-test/r/trigger.result: Added test fpr big mysql-test/t/sp-error.test: Changed error message numbers mysql-test/t/trigger.test: Added test for trigger returning result (#11587) sql/item_func.cc: Store the first used seed value for RAND() value. (This makes rand() replicatable in functions and triggers) Save and clear run context before executing a stored function and restore it afterwards. This removes side effects of stored functions for RAND(), auto-increment values and NOW() and makes most stored function replicatable sql/share/errmsg.txt: Reuse error message also for triggers sql/sp_head.cc: If in function or trigger, don't change value of NOW() (This allows us to use statement replication with functions that directly or indirectly uses timestamps) sql/sql_class.cc: Added framework for storing and retrieving run context while exceuting triggers or stored functions. sql/sql_class.h: Added framework for storing and retrieving run context while exceuting triggers or stored functions. sql/sql_parse.cc: If in function or trigger, don't change value of NOW() (This allows us to use statement replication with functions that directly or indirectly uses timestamps) sql/sql_trigger.cc: Moved process_triggers function from sql_trigger.h Use reset/restore sub_statement_state while executing triggers to avoid side effects and make them replicatable sql/sql_trigger.h: Moved process_triggers function from sql_trigger.h Use reset/restore sub_statement_state while executing triggers to avoid side effects and make them replicatable sql/sql_yacc.yy: Give error message if trigger can return a result set (Bug #11587) tests/fork_big2.pl: Removed return from end of lines mysql-test/r/rpl_trigger.result: New BitKeeper file ``mysql-test/r/rpl_trigger.result'' mysql-test/t/rpl_trigger.test: New BitKeeper file ``mysql-test/t/rpl_trigger.test'' |
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98da6d5ffb |
Merge bk-internal.mysql.com:/home/bk/mysql-5.0
into mysql.com:/home/dlenev/src/mysql-5.0-bg11973-2 sql/item_subselect.cc: Auto merged sql/sql_class.h: Auto merged sql/sql_parse.cc: Auto merged sql/sql_prepare.cc: Auto merged sql/sql_update.cc: Auto merged mysql-test/r/trigger.result: SCCS merged mysql-test/t/trigger.test: SCCS merged |
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f6fff55eb0 |
Fix for bug #12280 "Triggers: crash if flush tables".
We should not allow FLUSH statement to be executed inside both triggers and stored functions. mysql-test/r/sp-error.result: Updated test after replacing error, which is thrown when one uses FLUSH statement inside of stored function, with more specific. Also now we issue more general error when we barking about USE command in stored routines. mysql-test/r/trigger.result: Added test for bug #12280 "Triggers: crash if flush tables" mysql-test/t/sp-error.test: Updated test after replacing error, which is thrown when one uses FLUSH statement inside of stored function, with more specific. Also now we issue more general error when we barking about USE command in stored routines. mysql-test/t/trigger.test: Added test for bug #12280 "Triggers: crash if flush tables" sql/share/errmsg.txt: Removed ER_SP_NO_USE error. Now we use more general ER_SP_BADSTATEMENT in this case. Instead added error message for barking about statements which should not be allowed inside of stored functions or triggers. It is safe to do this since it is highly unprobable that someone will upgrade first to the new 5.0 release and then downgrade back to the old one. sql/sql_parse.cc: reload_acl_and_cache(): FLUSH TABLES and FLUSH PRIVILEGES should not be allowed if we are inside of stored function or trigger. sql/sql_yacc.yy: We should not allow FLUSH statement inside both triggers and stored functions. Replaced error which is thrown in this case with more specific. Also now we issue more general ER_SP_BADSTATEMENT error when one tries to use USE command inside of stored routine. |
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61a68ed6fa |
Clumsy but working fix for bug #11973 "SELECT .. INTO var_name; in trigger
cause crash on update". Let us update "thd" pointer in LEX, all its units and in LEX::result before executing statement in trigger body, since triggers are associated with TABLE object and because of this can be used in different threads. mysql-test/r/trigger.result: Added test case for bug #11973 "SELECT .. INTO var_name; in trigger cause crash on update". mysql-test/t/trigger.test: Added test case for bug #11973 "SELECT .. INTO var_name; in trigger cause crash on update". sql/item_subselect.cc: subselect_engine: Moved implementation of set_thd() method to item_subselect.cc, since now it also sets "thd" for subselect_engine::result. sql/item_subselect.h: subselect_engine: Moved implementation of set_thd() method to item_subselect.cc, since now it also sets "thd" for subselect_engine::result. sql/sql_class.h: select_result: Added set_thd() method for updating select_result::thd value (we need this in cases when statement to which this select_result belongs will be used in different threads, as it happens for statements in trigger body). multi_delete/multi_update: Got rid of redundant "thd" member (we already have it in select_result). sql/sql_delete.cc: multi_delete: Got rid of redundant "thd" member (we already have it in select_result). sql/sql_lex.h: st_select_lex_unit: Added set_thd() method for updating st_select_lex_unit::thd value (we need this in cases when statement to which this unit belongs will be used in different threads, as it happens for statements in trigger body). We don't update thd of select_result pointed by st_select_lex_unit::result in this method, since it is either have too short lifetime (i.e. created for each execution) or is accessible via Item_subquery or LEX::result and thus already taken care of. sql/sql_parse.cc: multi_delete: Got rid of redundant "thd" member (we already have it in select_result). sql/sql_prepare.cc: reinit_stmt_before_use(): We have to update "thd" pointer in LEX, all its units and in LEX::result, since statements which belong to trigger body are associated with TABLE object and because of this can be used in different threads. sql/sql_update.cc: multi_update: Got rid of redundant "thd" member (we already have it in select_result). |
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b6dd299df9 | postmerge-fix | ||
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a66928bb24 |
store/restore sql_mode which was in force during ctrigger creation (BUG#5891)
other sql_mode fixes mysql-test/r/information_schema.result: changes in information schema mysql-test/r/trigger.result: storing and restoring sql modes for triggers mysql-test/t/trigger.test: storing and restoring parsing modes for triggers sql/mysqld.cc: add length of mode names sql/parse_file.cc: new type of list (ulonglong) sql/parse_file.h: new type of list (ulonglong) sql/set_var.cc: mode output made as static method sql/set_var.h: mode output made as static method sql/sp_head.cc: added sql_mode storing/restoring during SP execution optimised sql_mode printing sql/sp_head.h: comment fixed according this changes sql/sql_show.cc: added sql_mode field sql/sql_trigger.cc: store/restore sql_mode which was in force during ctrigger creation sql/sql_trigger.h: store/restore sql_mode which was in force during ctrigger creation sql/sql_view.cc: fixed sql_mode |
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cbe7fdc998 | After merge fix. | ||
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a32bf7fb82 |
Fix for bugs #5892/6182/8751/8758/10994 (based on Antony's patch)
"Triggers have the wrong namespace" "Triggers: duplicate names allowed" "Triggers: CREATE TRIGGER does not accept fully qualified names" "SHOW TRIGGERS" mysql-test/r/information_schema.result: Added tests for new INFORMATION_SCHEMA.TRIGGERS view and SHOW TRIGGERS command. mysql-test/r/information_schema_db.result: INFORMATION_SCHEMA.TRIGGERS view was added. mysql-test/r/rpl_sp.result: Now DROP TRIGGER interprets first part of trigger identifier as database name and not as table name. Adjusted tests properly. mysql-test/r/trigger.result: Now DROP TRIGGER interprets first part of trigger identifier as database name and not as table name. Adjusted tests properly. Added test checking that triggers have database wide namespace. Added test for bug #8791 "Triggers: Allowed to create triggers on a subject table in a different DB". mysql-test/r/view.result: Now DROP TRIGGER interprets first part of trigger identifier as database name and not as table name. Adjusted tests properly. mysql-test/t/information_schema.test: Added tests for new INFORMATION_SCHEMA.TRIGGERS view and SHOW TRIGGERS command. mysql-test/t/rpl_sp.test: Now DROP TRIGGER interprets first part of trigger identifier as database name and not as table name. Adjusted tests properly. mysql-test/t/trigger.test: Now DROP TRIGGER interprets first part of trigger identifier as database name and not as table name. Adjusted tests properly. Added test checking that triggers have database wide namespace. Added test for bug #8791 "Triggers: Allowed to create triggers on a subject table in a different DB". mysql-test/t/view.test: Now DROP TRIGGER interprets first part of trigger identifier as database name and not as table name. Adjusted tests properly. sql/handler.cc: Added .TRN tho the list of known file extensions assoicated with tables. sql/item.h: trg_action_time_type/trg_event_type enums: Added TRG_ACTION_MAX/TRG_EVENT_MAX elements which should be used instead of magical values in various loops where we iterate through all types of trigger action times or/and trigger event types. sql/lex.h: Added new symbol "TRIGGERS". sql/mysql_priv.h: Added declaration of constant holding extension for trigger name (.TRN) files. sql/mysqld.cc: Added statistical variable for SHOW TRIGGERS command. sql/share/errmsg.txt: Added error message saying that one attempts to create trigger in wrong schema. sql/sp.cc: Replaced magical values with TRG_EVENT_MAX/TRG_ACTION_MAX constants. sql/sql_base.cc: open_unireg_entry(): Now Table_triggers_list::check_n_load() has one more argument which controls whether we should prepare Table_triggers_list with fully functional triggers or load only their names. sql/sql_lex.h: Added element for new SHOW TRIGGERS command to enum_sql_command enum. sql/sql_parse.cc: prepare_schema_table(): Added support for SHOW TRIGGERS statement. sql/sql_show.cc: Added new INFORMATION_SCHEMA.TRIGGERS view and SHOW TRIGGERS command. sql/sql_table.cc: mysql_rm_table_part2(): Replaced simple deletion of .TRG file with call to Table_triggers_list::drop_all_triggers which will also delete .TRN files for all triggers associated with table. sql/sql_trigger.cc: Now triggers have database wide namespace. To support it we create special .TRN file with same name as trigger for each trigger. This file contains name of trigger's table so one does not need to specify it explicitly in DROP TRIGGER. Moreover DROP TRIGGER treats first part of trigger identifier as database name now. Updated mysql_create_or_drop_trigger() routine and Table_triggers_list::create_trigger()/drop_trigger()/check_n_load() methods accordingly. Added add_table_for_trigger() routine and Table_triggers_list::drop_all_triggers() method. Added Table_triggers_list::get_trigger_info() for obtaining trigger metadata. sql/sql_trigger.h: Table_triggers_list: Use TRG_EVENT_MAX, TRG_ACTION_MAX instead of magic values. Added get_trigger_info() method for obtaining trigger's meta-data. Added drop_all_triggers() method which drops all triggers for table. Added declarations of trg_action_time_type_names/trg_event_type_names arrays which hold names of triggers action time types and event types. sql/sql_yacc.yy: Changed grammar for CREATE/DROP TRIGGER to support database wide trigger namespace. Added new SHOW TRIGGERS statement. sql/table.h: enum enum_schema_tables: Added constant for new INFORMATION_SCHEMA.TRIGGERS view. |
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4c197d99a1 |
Now when we create or drop trigger we will open only subject table and not
all tables suggested by prelocking algorithm. Added test for bug #11889 "Server crashes when dropping trigger using stored routine" (which was fixed by previous patch). mysql-test/r/trigger.result: Since we are using open_ltable() now to open table for trigger creation, code for error when we try to create trigger on view has changed to equivalent one. Added test for bug #11889 "Server crashes when dropping trigger using stored routine". mysql-test/t/trigger.test: Since we are using open_ltable() now to open table for trigger creation, code for error when we try to create trigger on view has changed to equivalent one. Added test for bug #11889 "Server crashes when dropping trigger using stored routine". sql/sql_trigger.cc: mysql_create_or_drop_trigger(): It is better to open only table for which we are going to create or drop trigger with open_ltable() since we don't really need working prelocking in this case. |
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02bfa71006 |
Fixed trigger.test after fixing bug #11554 "Server crashes on statement
indirectly using non-cached function". mysql-test/r/trigger.result: Fixed test case after fixing bug #11554 "Server crashes on statement indirectly using non-cached function". mysql-test/t/trigger.test: Fixed test case after fixing bug #11554 "Server crashes on statement indirectly using non-cached function". |
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d0c69a8264 |
Manual fixes after merging patch for bug #8406 "Triggers crash if referencing
a table" with main tree. mysql-test/r/trigger.result: Temporalily disable part of test which exposes bug #11554 (work on which is in progress). mysql-test/t/sp-error.test: After merge fix. Fixed wrong delimiter command. mysql-test/t/trigger.test: Temporalily disable part of test which exposes bug #11554 (work on which is in progress). sql/sp.cc: After merge fix. Item_arena was renamed to Query_arena. sql/sp.h: After merge fix. Item_arena was renamed to Query_arena. sql/sql_lex.cc: After merge fix. LEX::spfuns/spprocs hashes were replaces with one LEX::sroutines hash. |
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eef5f17bde |
Merge bk-internal.mysql.com:/home/bk/mysql-5.0
into mysql.com:/home/dlenev/src/mysql-5.0-bg8406 mysql-test/r/sp.result: Auto merged mysql-test/r/trigger.result: Auto merged mysql-test/t/sp.test: Auto merged mysql-test/t/trigger.test: Auto merged sql/item_func.cc: Auto merged sql/sp.cc: Auto merged sql/sp_head.h: Auto merged sql/sql_base.cc: Auto merged sql/sql_lex.cc: Auto merged sql/sql_lex.h: Auto merged sql/sql_parse.cc: Auto merged sql/sql_trigger.cc: Auto merged mysql-test/r/sp-error.result: Manual merge. mysql-test/t/sp-error.test: Manual merge. sql/sp_head.cc: Manual merge. sql/sql_yacc.yy: Manual merge. |
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14b1f91ba4 |
Enable support of access to tables from triggers. Thus fix bug #8406 "Triggers
crash if referencing a table" and several other related bugs. Fix for bug #11834 "Re-execution of prepared statement with dropped function crashes server." which was spotted during work on previous bugs. Also couple of nice cleanups: - Replaced two separate hashes for stored routines used by statement with one. - Now instead of doing one pass through all routines used in statement for caching them and then doing another pass for adding their tables to table list, we do only one pass during which do both things. mysql-test/r/sp-error.result: Added test for bug #11834 "Re-execution of prepared statement with dropped function crashes server" also covering handling of prepared statements which use stored functions but does not require prelocking. mysql-test/r/sp.result: Updated test for LOCK TABLES with views in table list. (Old version of statement used in this test will work ok now, since prelocking algorithm was tuned and will lock only one multi-set of tables for each routine even if this routine is used in several different views). mysql-test/r/trigger.result: Added several tests for triggers using tables. mysql-test/t/sp-error.test: Added test for bug #11834 "Re-execution of prepared statement with dropped function crashes server" also covering handling of prepared statements which use stored functions but does not require prelocking. mysql-test/t/sp.test: Updated comment about recursive views to reflect current situation. Updated test for LOCK TABLES with views in table list. (Old version of statement used in this test will work ok now, since prelocking algorithm was tuned and will lock only one multi-set of tables for each routine even if this routine is used in several different views). mysql-test/t/trigger.test: Added several tests for triggers using tables. sql/item_func.cc: Item_func_sp::cleanup(): By next statement execution stored function can be dropped or altered so we can't assume that sp_head object for it will be still valid. sql/sp.cc: - Added Sroutine_hash_entry structure that represents element in the set of stored routines used by statement or routine. We can't as before use LEX_STRING for this purprose because we want link all elements of this set in list. - Replaced sp_add_to_hash() with sp_add_used_routine() which takes into account that now we use one hash for stored routines used by statement instead of two and which mantains list linking all elelemnts in this hash. - Renamed sp_merge_hash() to sp_update_sp_used_routines(). - Introduced sp_update_stmt_used_routines() for adding elements to the set of routines used by statement from another similar set for statement or routine. This function will also mantain list linking elements of destination set. - Now instead of one sp_cache_routines() function we have family of sp_cache_routines_and_add_tables() functions which are also responsible for adding tables used by routines being cached to statement table list. Nice optimization - thanks to list linking all elements in the hash of routines used by statement we don't need to perform several iterations over this hash (as it was before in cases when we have added new elements to it). sql/sp.h: Added declarations of functions used for manipulations with set (hash) of stored routines used by statement. sql/sp_head.cc: sp_name::init_qname(): Now sp_name also holds key identifying routine in the set (hash) of stored routines used by statement. sp_head: Instead of two separate hashes sp_funs/m_spprocs representing sets of stored routines used by this routine we use one hash - m_sroutines. sp_instr_set_trigger_field: Added support for subqueries in assignments to row accessors in triggers. Removed definition of sp_add_sp_tables_to_table_list() and auxilary functions since now we don't have separate stage on which we add tables used by routines used by statement to table list for prelocking. We do it on the same stage as we load those routines in SP cache. So all this functionality moved to sp_cache_routines_and_add_tables() family of functions. sql/sp_head.h: sp_name: Now this class also holds key identifying routine in the set (hash) of stored routines used by statement. sp_head: Instead of two separate hashes sp_funs/m_spprocs representing sets of stored routines used by this routine we use one hash - m_sroutines. sp_instr_set_trigger_field: Added support for subqueries in assignments to row accessors in triggers. Removed declaration of sp_add_sp_tables_to_table_list() since now we don't have separate stage on which we add tables used by routines used by statement to table list for prelocking. We do it on the same stage as we load those routines in SP cache. sql/sql_base.cc: open_tables(): - LEX::spfuns/spprocs hashes were replaced with one LEX::sroutines hash. - Now instead of doing one pass through all routines used in statement for caching them and then doing another pass for adding their tables to table list, we do only one pass during which do both things. It is easy to do since all routines in the set of routines used by statement are linked in the list. This also allows us to calculate table list for prelocking more precisely. - Now triggers properly inform prelocking algorithm about tables they use. sql/sql_lex.cc: lex_start(): Replaced LEX::spfuns/spprocs with with one LEX::sroutines hash. Added LEX::sroutines_list list linking all elements in this hash. st_lex::st_lex(): Moved definition of LEX constructor to sql_lex.cc file to be able use sp_sroutine_key declaration from sp.h in it. sql/sql_lex.h: LEX: Replaced two separate hashes for stored routines used by statement with one. Added list linking all elements in this hash to be able to iterate through all elements and add new elements to this hash at the same time. Moved constructor definition to sql_lex.cc. sql/sql_parse.cc: mysql_execute_command(): Replaced LEX::spfuns/spprocs with one LEX::sroutines hash. sql/sql_trigger.cc: Added missing GNU GPL notice. Table_triggers_list::check_n_load() Added initialization of sroutines_key which stores key representing triggers of this table in the set (hash) of routines used by this statement. sql/sql_trigger.h: Added missing GNU GPL notice. Table_triggers_list: Added sroutines_key member to store key representing triggers of this table in the set (hash) of routines used by this statement. Declared sp_cache_routines_and_add_tables_for_triggers() as friend since it needs access to sroutines_key and trigger bodies. sql/sql_yacc.yy: - Now we use sp_add_used_routine() instead of sp_add_to_hash() for adding elements to the set of stored routines used in statement. - Enabled support of subqueries as right sides in assignments to triggers' row accessors. |
||
|
unknown
|
36f34c1c7e |
Added test for bug #5893 "Triggers with dropped functions cause crashes"
(The bug itself was fixed earlier by the patch that fixed bug #5860 "Multi-table UPDATE does not activate update triggers" and several other bugs). mysql-test/r/trigger.result: Added test for bug #5893 "Triggers with dropped functions cause crashes" mysql-test/t/trigger.test: Added test for bug #5893 "Triggers with dropped functions cause crashes" |
||
|
unknown
|
02425b7bf0 |
Added test for bug #5894 "Triggers with altered tables cause corrupt
databases" and basic handling of errors which happen in triggers. (The bug itself was fixed by several previous patches). Fixed bug in multi-delete which were exposed by these tests. mysql-test/r/trigger.result: Added test for bug #5894 "Triggers with altered tables cause corrupt databases" and basic handling of errors which happen in triggers. mysql-test/t/trigger.test: Added test for bug #5894 "Triggers with altered tables cause corrupt databases" and basic handling of errors which happen in triggers. sql/sql_delete.cc: multi_delete::send_eof(): Fixed bug which were exposed by testing of basic handling of errors in triggers. Error which happened in multi_delete::do_deletes() was wiped out by thd->clear_error() and thus never sent to client (and this stalled client connection). |
||
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unknown
|
1fa7c69d31 |
Fix for bugs:
#5860 "Multi-table UPDATE does not activate update triggers" #6812 "Triggers are not activated for INSERT ... SELECT" #8755 "Trigger is not activated by LOAD DATA". This patch also implements proper handling of triggers for special forms of insert like REPLACE or INSERT ... ON DUPLICATE KEY UPDATE. Also now we don't call after trigger in case when we have failed to inserted/update or delete row. Trigger failure should stop statement execution. I have not properly tested handling of errors which happen inside of triggers in this patch, since it is simplier to do this once we will be able to access tables from triggers. mysql-test/r/trigger.result: Added tests for triggers behavior for various non-standard forms of INSERT such as REPLACE and INSERT ... ON DUPLICATE KEY UPDATE. Also added tests for bugs #5860 "Multi-table UPDATE does not activate update triggers", #6812 "Triggers are not activated for INSERT ... SELECT" and #8755 "Trigger is not activated by LOAD DATA". mysql-test/t/trigger.test: Added tests for triggers behavior for various non-standard forms of INSERT such as REPLACE and INSERT ... ON DUPLICATE KEY UPDATE. Also added tests for bugs #5860 "Multi-table UPDATE does not activate update triggers", #6812 "Triggers are not activated for INSERT ... SELECT" and #8755 "Trigger is not activated by LOAD DATA". sql/item.cc: Since it turned out that at trigger loading time we can't say in which buffer TABLE::record[0] or record[1] old version of row will be stored we have to change our approach to binding of Item_trigger_field to Field instances. Now after trigger parsing (in Item_trigger_field::setup_table()) we only find index of proper Field in the TABLE::field array. Then before trigger is invoked we set Table_triggers_list::old_field/new_field so they point to arrays holding Field instances bound to buffers with proper row versions. And as last step in Item_trigger_field::fix_fields() we get pointer to Field from those arrays using saved field index. Item_trigger_field::setup_field()/fix_fields() were changed to implement this approach. sql/item.h: Since it turned out that at trigger loading time we can't say in which buffer TABLE::record[0] or record[1] old version of row will be stored we have to change our approach to binding of Item_trigger_field to Field instances. Now after trigger parsing (in Item_trigger_field::setup_table()) we only find index of proper Field in the TABLE::field array. Then before trigger is invoked we set Table_triggers_list::old_field/new_field so they point to arrays holding Field instances bound to buffers with proper row versions. And as last step in Item_trigger_field::fix_fields() we get pointer to Field from those arrays using saved field index. Item_trigger_field: - Added field_idx member to store index of Field object corresponding to this Item in TABLE::field array. - Added triggers member to be able to access to parent Table_trigger_list object from fix_fields() method. - setup_field() no longer needs to know for which type of event this trigger is, since it does not make decision Field for which buffer (record[0] or record[1] is appropriate for this Item_trigger_field) sql/mysql_priv.h: Added fill_record_n_invoke_before_triggers() methods. They are simple wrappers around fill_record() which invoke proper before trigger right after filling record with values. sql/sql_base.cc: Added fill_record_n_invoke_before_triggers() methods. They are simple wrappers around fill_record() which invoke proper before trigger right after filling record with values. sql/sql_delete.cc: mysql_delete(): Now we stop statement execution if one of triggers failed, we also don't execute after delete trigger if we failed to delete row from the table (We also pass information about which buffer contains old version of row to process_triggers()). multi_delete::send_data()/do_deletes(): Now we also invoke triggers in case of multi-delete. sql/sql_insert.cc: mysql_insert(): Moved invocation of before triggers to fill_record_n_invoke_before_triggers() method. After triggers are now executed as part of write_record(). (as nice side effect now we also stop statement execution if one of triggers fail). write_record(): Invoke after insert trigger after performing insert. Also invoke proper triggers if insert is converted to update or conflicting row is deleted. Cleaned up error handling a bit - no sense to report error via handler::print_error if it was not generated by handler method and was reported before. Also now we will execute after trigger only if we really have written row to the table. select_insert::send_data()/store_values(): We should also execute INSERT triggers for INSERT ... SELECT statement. sql/sql_load.cc: read_fixed_length()/read_sep_field(): We should execute INSERT triggers when processing LOAD DATA statement. Small cleanup in auto-increment related code. Also moved check for thd->killed which is used to abort LOAD DATA in case of problems in 'traditional' mode to better place.. sql/sql_trigger.cc: Since it turned out that at trigger loading time we can't say in which buffer TABLE::record[0] or record[1] old version of row will be stored we have to change our approach to binding of Item_trigger_field to Field instances. Now after trigger parsing (in Item_trigger_field::setup_table()) we only find index of proper Field in the TABLE::field array. Then before trigger is invoked we set Table_triggers_list::old_field/new_field so they point to arrays holding Field instances bound to buffers with proper row versions. And as last step in Item_trigger_field::fix_fields() we get pointer to Field from those arrays using saved field index. Table_triggers_list methods were changed to implement this approach (see also comments for sql_trigger.h). sql/sql_trigger.h: Since it turned out that at trigger loading time we can't say in which buffer TABLE::record[0] or record[1] old version of row will be stored we have to change our approach to binding of Item_trigger_field to Field instances. Now after trigger parsing (in Item_trigger_field::setup_table()) we only find index of proper Field in the TABLE::field array. Then before trigger is invoked we set Table_triggers_list::old_field/new_field so they point to arrays holding Field instances bound to buffers with proper row versions. And as last step in Item_trigger_field::fix_fields() we get pointer to Field from those arrays using saved field index. Changed Table_triggers_list to implement this new approach: - Added record1_field member to store array of Field objects bound to TABLE::record[1] buffer (instead of existing old_field member) - Added new_field member and changed meaning of old_field member. During trigger execution they should point to arrays of Field objects bound to buffers holding new and old versions of row respectively. - Added 'table' member to be able to get access to TABLE instance (for which this trigger list object was created) from process_triggers() method. - Now process_triggers() method sets old_field and new_field members properly before executing triggers body (basing on new old_row_is_record1 parameter value). - Renamed prepare_old_row_accessors_method() to prepare_record1_accessors() Also added has_before_update_triggers() method which allows to check whenever any before update triggers exist for table. sql/sql_update.cc: mysql_update(): Now we invoke before triggers in fill_record_n_invoke_before_triggers() method. Also now we abort statement execution when one of triggers fail. safe_update_on_fly(): When we are trying to understand if we can update first table in multi update on the fly we should take into account that BEFORE UPDATE trigger can change field values. multi_update::send_data()/do_updates() We should execute proper triggers when doing multi-update (in both cases when we do it on the fly and using temporary tables). |
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unknown
|
2c5d427c87 |
Fix for bugs #5859 "DROP TABLE does not drop triggers" and
#6559 "DROP DATABASE forgets to drop triggers". If we drop table we should also drop all triggers associated with it. To do this we have to check for existence of .TRG file when we are dropping table and delete it too. mysql-test/r/trigger.result: Added tests for bugs #5859 "DROP TABLE does not drop triggers" and #6559 "DROP DATABASE forgets to drop triggers". mysql-test/t/trigger.test: Added tests for bugs #5859 "DROP TABLE does not drop triggers" and #6559 "DROP DATABASE forgets to drop triggers". sql/handler.cc: Added .TRG to the list of known extensions of files associated with tables. sql/mysql_priv.h: Added declaration of constant holding extension for trigger files. sql/sql_table.cc: mysql_rm_table_part2(): If we drop table we should also drop all triggers associated with it. To do this we have to check for existence of .TRG file and delete it (until the moment when we will store trigger definitions in the same .FRM file as table description). sql/sql_trigger.cc: Made constant holding extension for trigger files externally visible. |
||
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unknown
|
bd365f7622 |
After merge fixes
Add support for warnings for prepare of prepared statements Fixed test to work with --ps-protocol Fixed some test results libmysql/libmysql.c: Add support for warnings for prepare of prepared statements mysql-test/r/func_concat.result: After merge fixes mysql-test/r/select.result: Delete conflicting tables form previous tests mysql-test/r/view.result: New code from 4.1 fixed old error mysql-test/t/create.test: Ensure that --ps-protocol return same results as normal test mysql-test/t/func_group.test: Remove not needed --disable_ps_protocol mysql-test/t/func_time.test: Ensure that --ps-protocol return same results as normal test mysql-test/t/having.test: Ensure that --ps-protocol return same results as normal test mysql-test/t/insert_select.test: Remove not needed --disable_ps_protocol mysql-test/t/select.test: Ensure that --ps-protocol return same results as normal test mysql-test/t/sp.test: Fixed comment mysql-test/t/system_mysql_db_fix.test: Fix that results is same as from system_mysql_db.test mysql-test/t/trigger.test: Added comment mysql-test/t/type_blob.test: Remove not needed --disable_ps_protocol mysql-test/t/union.test: Run most of the test with --ps-protocol mysql-test/t/user_limits.test: Ensure that --ps-protocol return same results as normal test mysql-test/t/view.test: Removed --error as bug is now fixed mysql-test/t/warnings.test: Ensure that --ps-protocol return same results as normal test ndb/include/Makefile.am: Don't automaticly use SCCS files sql/ha_ndbcluster.cc: Removed compiler warning sql/log_event.cc: After merge fix sql/sql_class.h: After merge fix sql/sql_insert.cc: After merge fix sql/sql_load.cc: After merge fix sql/sql_prepare.cc: Add support for warnings for prepare of prepared statements sql/sql_update.cc: After merge fixes |
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unknown
|
e055be6658 |
Remove clear_insert_values() because it was far from trivial to handle the cleanup in all cases
(Old code failed for INSERT ... ON DUPLICATE with prepared statements) Instead, always reset table->insert_values on open. mysql-test/t/trigger.test: Fix test for --ps-protocol sql/sql_base.cc: Clear insert_values on open_table sql/sql_insert.cc: Remove clear_insert_values() sql/sql_parse.cc: Remove clear_insert_values() sql/sql_prepare.cc: Remove clear_insert_values() sql/table.cc: Remove clear_insert_values() sql/table.h: Remove clear_insert_values() |
||
|
unknown
|
c3da2d12f7 |
Fix for bug #5888 "Triggers with nonexistent columns cause packets
out of order". (final version)
Now instead of binding Item_trigger_field to TABLE objects during
trigger definition parsing at table open, we perform pass through
special list of all such objects in trigger. This allows easily check
all references to fields in old/new version of row in trigger during
execution of CREATE TRIGGER statement (this is more courtesy for users
since we can't check everything anyway).
We also report that such reference is bad by returning error from
Item_trigger_field::fix_fields() method (instead of setup_field())
This means that if trigger is broken we will bark during trigger
execution instead of trigger definition parsing at table open.
(i.e. now we allow to open tables with broken triggers).
mysql-test/r/trigger.result:
Added test which attempts to create trigger for table referencing to
field which does not exist in this table.
mysql-test/t/trigger.test:
Added test which attempts to create trigger for table referencing to
field which does not exist in this table.
sql/item.cc:
Item_trigger_field::setup_field() now returns void. If any error
will occur we will report it at fix_fields() stage.
sql/item.h:
Item_trigger_field:
- Added next_trg_field member for linking all such objects in trigger
in one list.
- Also setup_field() now returns void. If any error will occur we will
report it at fix_fields() stage.
sql/mysql_priv.h:
Added SQL_LIST::push_back() method which allows to add another SQL_LIST
to the end of this SQL_LIST.
sql/sp_head.cc:
sp_head::init()/reset_lex()/restore_lex():
In order to fill global LEX::trg_table_fields (list of all
Item_trigger_field objects for trigger) we should init the same list
in LEX of substatement before its parsing and merge it to global list
after parsing.
sql/sp_head.h:
sp_instr_trigger_field:
Made trigger_field member public to be able to add it more easily to
global list of all Item_trigger_field objects in trigger.
sql/sql_lex.cc:
LEX::trg_table was removed.
sql/sql_lex.h:
Now we are binding Item_trigger_field's to TABLE object by passing
through specially constructed list of all such objects in this trigger
instead of doing this during trigger definition parsing at table open.
So we no longer need LEX::trg_table, we use LEX::trg_table_fields list
instead.
sql/sql_parse.cc:
mysql_execute_command():
Since now we use trigger body for some checks in
mysql_create_or_drop_trigger() we should destroy it only
after calling this function.
sql/sql_trigger.cc:
Now instead of binding Item_trigger_field to TABLE objects during
trigger definition parsing at table open, we perform pass through
special list of all such objects in trigger. This allows easily check
all references to fields in old/new version of row in trigger during
execution of CREATE TRIGGER statement (this is more courtesy for users
since we can't check everything anyway).
We also report that such reference is bad by returning error from
Item_trigger_field::fix_fields() method (instead of setup_field())
This means that if trigger is broken we will bark during trigger
execution instead of trigger definition parsing at table open.
(i.e. now we allow to open tables with broken triggers).
Table_triggers_list::prepare_old_row_accessors() method was added to be
able to reuse code creating Field objects referencing TABLE::record[1]
buffer instead of TABLE::record[0].
sql/sql_trigger.h:
Added Table_triggers_list::prepare_old_row_accessors() method to be
able to reuse code creating Field objects referencing to TABLE::record[1]
instead of record[0].
sql/sql_yacc.yy:
Now instead of performing binding of Item_trigger_field objects
to TABLE object during trigger definition parsing at table open,
we perform this binding by passing through specially constructed
list of all such items in trigger.
We also check value returned from memory allocation functions.
|
||
|
unknown
|
bb43e8317f |
Fix for bug #5890 "Triggers fail for DELETE without WHERE".
If we have DELETE with always true WHERE clause we should not use optimized delete_all_rows() method for tables with DELETE triggers, because in this case we will lose side-effect of deletion. mysql-test/r/trigger.result: Added test for bug #5890 "Triggers fail for DELETE without WHERE". mysql-test/t/trigger.test: Added test for bug #5890 "Triggers fail for DELETE without WHERE". sql/sql_delete.cc: mysql_delete(): We should not use optimized delete_all_rows() method for tables with DELETE triggers, because in this case we will lose side-effect of deletion. sql/sql_trigger.h: Added new Table_triggers_list::has_delete_triggers() method which allows to understand quickly if we have some DELETE triggers in our list. |
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|
unknown
|
79f1eeb87f |
Fix for bug #5887 "Triggers with string literals cause errors"
Fixed small error in new .FRM parser which caused it to handle improperly escaped strings. mysql-test/r/trigger.result: Added test for bug #5887 "Triggers with string literals cause errors". mysql-test/t/trigger.test: Added test for bug #5887 "Triggers with string literals cause errors". sql/parse_file.cc: read_escaped_string(): We should not fail when we meet \' sequence in escaped string. |
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unknown
|
97cbcbb0d7 |
After merge fixes for WL#1218 "Triggers"
mysql-test/t/trigger.test: After merge fix, error codes corrected. sql/sp_head.cc: After mrege fix. Fixed typo. sql/sql_trigger.cc: After merge fix. wait_if_gloabl_read_lock has one more argument now. |
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unknown
|
12ce293a7f |
WL#1218 "Triggers"
After review and after merge fixes. mysql-test/t/trigger.test: After merge fix. Updated error codes. sql/sp_head.cc: After merge fix. To give some chances for functions/triggers we have to close tables during sp_instr_* execution only if we have opened them before. sql/sp_head.h: After merge fix. sp_instr constructor now takes one more argument. sql/sql_trigger.cc: After merge and review fixes. Some variable renaming and optimizations. sql/sql_yacc.yy: After merge fixes. sp_instr_* classes now require sp context as constructor parameter. Also we should be careful with adding table for which we are creating trigger to table list. Some elements in trigger body can damage LEX::query_tables and so we should add this table to list only after parsing trigger body. |
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|
unknown
|
52ac4935e7 |
WL#1218 "Triggers". Some very preliminary version of patch.
Mostly needed for Monty for him getting notion what needed for triggers
from new .FRM format.
Things to be done:
- Right placement of trigger's invocations
- Right handling of errors in triggers (including transaction rollback)
- Support for priviliges
- Right handling of DROP/RENAME table (hope that it will be handled automatically
with merging of .TRG into .FRM file)
- Saving/restoring some information critical for trigger creation and replication
with their definitions (e.g. sql_mode, creator, ...)
- Replication
Already has some known bugs so probably not for general review.
include/mysqld_error.h:
Added trigger related error codes.
sql/Makefile.am:
Added sql_trigger.* files to list of sources from which mysqld is built.
sql/item.cc:
Added Item_trigger_field class representing field of new/old version of row which is
inserted/updated/deleted and for which trigger is invoked.
sql/item.h:
Added enums for describing trigger properties. (Here because of dependencies).
Added Item_trigger_field class representing field of new/old version of row which is
inserted/updated/deleted and for which trigger is invoked.
sql/item_func.cc:
Added Item_func_set_user_var::print_as_stmt() for printing of assignment to ser variable
from stored procedures.
Added comment clarifying why we don't need set no_send_ok when calling stored functions.
sql/item_func.h:
Added Item_func_set_user_var::print_as_stmt() for printing of assignment to ser variable
from stored procedures.
sql/lex.h:
Symbols used in statements defining triggers were added.
sql/mysql_priv.h:
Exported some functions needed for triggers implementation.
sql/parse_file.cc:
Cleaned up FILE_OPTIONS_STRLIST handling (needed for triggers).
sql/parse_file.h:
Cleaned up FILE_OPTIONS_STRLIST handling (needed for triggers).
sql/share/czech/errmsg.txt:
Added trigger related error messages.
sql/share/danish/errmsg.txt:
Added trigger related error messages.
sql/share/dutch/errmsg.txt:
Added trigger related error messages.
sql/share/english/errmsg.txt:
Added trigger related error messages.
sql/share/estonian/errmsg.txt:
Added trigger related error messages.
sql/share/french/errmsg.txt:
Added trigger related error messages.
sql/share/german/errmsg.txt:
Added trigger related error messages.
sql/share/greek/errmsg.txt:
Added trigger related error messages.
sql/share/hungarian/errmsg.txt:
Added trigger related error messages.
sql/share/italian/errmsg.txt:
Added trigger related error messages.
sql/share/japanese/errmsg.txt:
Added trigger related error messages.
sql/share/korean/errmsg.txt:
Added trigger related error messages.
sql/share/norwegian-ny/errmsg.txt:
Added trigger related error messages.
sql/share/norwegian/errmsg.txt:
Added trigger related error messages.
sql/share/polish/errmsg.txt:
Added trigger related error messages.
sql/share/portuguese/errmsg.txt:
Added trigger related error messages.
sql/share/romanian/errmsg.txt:
Added trigger related error messages.
sql/share/russian/errmsg.txt:
Added trigger related error messages.
sql/share/serbian/errmsg.txt:
Added trigger related error messages.
sql/share/slovak/errmsg.txt:
Added trigger related error messages.
sql/share/spanish/errmsg.txt:
Added trigger related error messages.
sql/share/swedish/errmsg.txt:
Added trigger related error messages.
sql/share/ukrainian/errmsg.txt:
Added trigger related error messages.
sql/sp_head.cc:
sp_head::init_strings(): added support for triggers
(we don't have most of strings for them)
sp_head::execute_function(): triggers don't require RETURN
sp_head::reset_lex(): added propagation of trigger properties to LEX used for
parsing of statements composing trigger body.
Added two more SP instructions:
- sp_instr_set_user_var for setting user variables in stored functions and triggers
(we can't use sp_instr_stmt and "SET @a:=..." statement since it will close open
tables and thus break execution of calling statement.
- sp_instr_set_trigger_field for assignment to fields of row being updated/inserted in
triggers
sql/sp_head.h:
Added new type of sp_head object - TYPE_ENUM_TRIGGER
Added two more SP instructions:
- sp_instr_set_user_var for setting user variables in stored functions and triggers
(we can't use sp_instr_stmt and "SET @a:=..." statement since it will close open
tables and thus break execution of calling statement.
- sp_instr_set_trigger_field for assignment to fields of row being updated/inserted in
triggers
sql/sql_base.cc:
Now freeing memory occupied by trigger related structures when closing tables.
open_unireg_entry(): added loading of triggers for table.
find_field_in_real_table() is now public since it required by Item_trigger_field in item.cc
sql/sql_delete.cc:
Added triggers invocation for DELETE (should be fixed for sure :))
sql/sql_insert.cc:
Added triggers invocation for INSERT (should be fixed for sure :))
sql/sql_lex.cc:
Added trg_new_row_fake_var variable pointer to which is used for distinguishing between
assignment to NEW row field (when parsing trigger definition) and structured variable.
Added initialization of LEX->trg_table to lex_start(). (When triggers are parsed during
opening of table it points to table object.)
sql/sql_lex.h:
Added trigger related commands.
Added st_trg_chistics structure describing properties of trigger being created
(as struct and as LEX member).
Added trg_new_row_fake_var variable pointer to which is used for
distinguishing between assignment to NEW row field (when parsing trigger definition)
and structured variable.
Added LEX::trg_table which points to table being opened when we are parsing trigger
definition while opening table.
sql/sql_parse.cc:
Added support for CREATE/DROP TRIGGER commands.
sql/sql_table.cc:
Cleanup. close_cached_table() always returns 0 and its result is not analyzed in most
places so chenged its return type to void.
sql/sql_update.cc:
Added triggers invocation for UPDATE (should be fixed for sure :))
sql/sql_yacc.yy:
Added support for CREATE/DROP TRIGGER statements.
Added support for OLD/NEW row identifiers in trigger.
Made assignment to user variables not to break execution of stored function or trigger.
sql/table.h:
Added TABLE::triggers member representing triggers for this table.
|