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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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6
mysql-test/suite/rpl/r/rpl_replicate_do.result
View File

@@ -39,8 +39,8 @@ t1
t2
show triggers;
Trigger Event Table Statement Timing Created sql_mode Definer character_set_client collation_connection Database Collation
trg1 INSERT t1 set new.b=2 BEFORE NULL NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
trg2 INSERT t2 set new.b=2 BEFORE NULL NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
trg1 INSERT t1 set new.b=2 BEFORE # NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
trg2 INSERT t2 set new.b=2 BEFORE # NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
connection slave;
connection slave;
show tables;
@@ -48,7 +48,7 @@ Tables_in_test
t1
show triggers;
Trigger Event Table Statement Timing Created sql_mode Definer character_set_client collation_connection Database Collation
trg1 INSERT t1 set new.b=2 BEFORE NULL NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
trg1 INSERT t1 set new.b=2 BEFORE # NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION root@localhost latin1 latin1_swedish_ci latin1_swedish_ci
connection master;
drop trigger trg1;
drop trigger trg2;