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62 commits

Author SHA1 Message Date
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"
 2005-06-29 10:35:49 +04:00
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).
 2005-05-30 18:55:56 +04:00
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).
 2005-05-24 22:19:33 +04:00
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.
 2005-03-27 16:15:21 +04:00
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
 2005-01-04 13:46:53 +02:00
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()
 2005-01-03 13:56:23 +02:00
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.
 2004-11-24 12:24:02 +03:00
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.
 2004-11-12 17:04:07 +03:00
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.
 2004-10-08 15:16:03 +04:00
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.
 2004-09-09 23:44:27 +04:00
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.
 2004-09-09 00:46:01 +04:00
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.
 2004-09-07 16:29:46 +04:00