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MDEV-6112 multiple triggers per table

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This is similar to MysQL Worklog 3253, but with
a different implementation. The disk format and
SQL syntax is identical with MySQL 5.7.

Fetures supported:
- "Any" ammount of any trigger
- Supports FOLLOWS and PRECEDES to be
  able to put triggers in a certain execution order.

Implementation details:
- Class Trigger added to hold information about a trigger.
  Before this trigger information was stored in a set of lists in
  Table_triggers_list and in Table_triggers_list::bodies
- Each Trigger has a next field that poinst to the next Trigger with the
  same action and time.
- When accessing a trigger, we now always access all linked triggers
- The list are now only used to load and save trigger files.
- MySQL trigger test case (trigger_wl3253) added and we execute these
  identically.
- Even more gracefully handling of wrong trigger files than before. This
  is useful if a trigger file uses functions or syntax not provided by
  the server.
- Each trigger now has a "Created" field that shows when the trigger was
  created, with 2 decimals.

Other comments:
- Many of the changes in test files was done because of the new "Created"
  field in the trigger file. This shows up in SHOW ... TRIGGER and when
  using information_schema.trigger.
- Don't check if all memory is released if on uses --gdb;  This is needed
  to be able to get a list from safemalloc of not freed memory while
  debugging.
- Added option to trim_whitespace() to know how many prefix characters
  was skipped.
- Changed a few ulonglong sql_mode to sql_mode_t, to find some wrong usage
  of sql_mode.
This commit is contained in:
Monty
2016-10-02 15:35:08 +03:00
parent 0bae1957dd
commit 8be53a389c
73 changed files with 2553 additions and 1175 deletions
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16
mysql-test/r/mysql_comments.result
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@ -27,10 +27,10 @@ Procedure sql_mode Create Procedure character_set_client collation_connection Da
foosp CREATE DEFINER=`root`@`localhost` PROCEDURE `foosp`()\ninsert into test.t1\n\n\n\n\n \n\n \n values ("foo", 42) latin1 latin1_swedish_ci latin1_swedish_ci
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
nicesp CREATE DEFINER=`root`@`localhost` PROCEDURE `nicesp`(a int)\nbegin\n \n declare b int;\n declare c float;\n\n \n \n\n \nend latin1 latin1_swedish_ci latin1_swedish_ci
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation
t1_empty CREATE DEFINER=`root`@`localhost` trigger t1_empty after delete on t1\nfor each row\nbegin\nend latin1 latin1_swedish_ci latin1_swedish_ci
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation
t1_bi CREATE DEFINER=`root`@`localhost` trigger t1_bi before insert on t1\nfor each row\nbegin\n\n\n\n \n declare b int;\n declare c float;\n\n \n \n\n \n set NEW.data := 12;\nend latin1 latin1_swedish_ci latin1_swedish_ci
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation Created
t1_empty CREATE DEFINER=`root`@`localhost` trigger t1_empty after delete on t1\nfor each row\nbegin\nend latin1 latin1_swedish_ci latin1_swedish_ci --TIME--
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation Created
t1_bi CREATE DEFINER=`root`@`localhost` trigger t1_bi before insert on t1\nfor each row\nbegin\n\n\n\n \n declare b int;\n declare c float;\n\n \n \n\n \n set NEW.data := 12;\nend latin1 latin1_swedish_ci latin1_swedish_ci --TIME--
id data
trig 12
"Pass 2 : --enable-comments"
@ -54,10 +54,10 @@ Procedure sql_mode Create Procedure character_set_client collation_connection Da
foosp CREATE DEFINER=`root`@`localhost` PROCEDURE `foosp`()\ninsert into test.t1\n## These comments are part of the procedure body, and should be kept.\n# Comment 2a\n-- Comment 2b\n/* Comment 2c */\n -- empty line below\n\n -- empty line above\n values ("foo", 42) # comment 3, still part of the body latin1 latin1_swedish_ci latin1_swedish_ci
Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
nicesp CREATE DEFINER=`root`@`localhost` PROCEDURE `nicesp`(a int)\nbegin\n -- declare some variables here\n declare b int;\n declare c float;\n\n -- do more stuff here\n -- commented nicely and so on\n\n -- famous last words ...\nend latin1 latin1_swedish_ci latin1_swedish_ci
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation
t1_empty CREATE DEFINER=`root`@`localhost` trigger t1_empty after delete on t1\nfor each row\nbegin\nend latin1 latin1_swedish_ci latin1_swedish_ci
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation
t1_bi CREATE DEFINER=`root`@`localhost` trigger t1_bi before insert on t1\nfor each row\nbegin\n# comment 1a\n-- comment 1b\n/*\n comment 1c\n*/\n -- declare some variables here\n declare b int;\n declare c float;\n\n -- do more stuff here\n -- commented nicely and so on\n\n -- famous last words ...\n set NEW.data := 12;\nend latin1 latin1_swedish_ci latin1_swedish_ci
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation Created
t1_empty CREATE DEFINER=`root`@`localhost` trigger t1_empty after delete on t1\nfor each row\nbegin\nend latin1 latin1_swedish_ci latin1_swedish_ci --TIME--
Trigger sql_mode SQL Original Statement character_set_client collation_connection Database Collation Created
t1_bi CREATE DEFINER=`root`@`localhost` trigger t1_bi before insert on t1\nfor each row\nbegin\n# comment 1a\n-- comment 1b\n/*\n comment 1c\n*/\n -- declare some variables here\n declare b int;\n declare c float;\n\n -- do more stuff here\n -- commented nicely and so on\n\n -- famous last words ...\n set NEW.data := 12;\nend latin1 latin1_swedish_ci latin1_swedish_ci --TIME--
id data
trig 12
set global sql_mode=default;