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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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52ac4935e7
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.
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This is a release of MySQL, a GPL (free) SQL database server (more licence information in the PUBLIC file and in the reference manual). Please read the "Upgrading from..." section in the manual first, if you are migrating from older versions of MySQL! The latest information about MySQL can be found at: http://www.mysql.com To see what it can do take a look at the features section in the manual. For installation instructions see the Installation chapter in the manual. For future plans see the TODO appendix in the manual. New features/bug fixes history is in the news appendix in the manual. For the currently known bugs/misfeatures (known errors) see the bugs appendix in the manual. For examples of SQL and benchmarking information see the bench directory. The manual mentioned above can be found in the Docs directory. The manual is available in the following formats: as plain ASCII text in Docs/manual.txt, in HTML format in Docs/manual_toc.html, as GNU Info in Docs/mysql.info and as PostScript in Docs/manual.ps. MySQL is brought to you by the MySQL team at MySQL AB For a list of developers and other contributors, see the Credits appendix in the manual. ************************************************************ IMPORTANT: Send bug (error) reports, questions and comments to the mailing list at mysql@lists.mysql.com Please use the 'mysqlbug' script when posting bug reports or questions about MySQL. mysqlbug will gather some information about your system and start your editor with a form in which you can describe your problem. Bug reports might be silently ignored by the MySQL maintainers if there is not a good reason included in the report as to why mysqlbug has not been used. A report that says 'MySQL does not work for me. Why?' is not considered a valid bug report. The mysqlbug script can be found in the 'scripts' directory of the distribution, that is '<where-you-installed-mysql>/scripts'.