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MDEV-34958: after Trigger doesn't work correctly with bulk insert

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This bug has the same nature as the issues
  MDEV-34718: Trigger doesn't work correctly with bulk update
  MDEV-24411: Trigger doesn't work correctly with bulk insert

To fix the issue covering all use cases, resetting the thd->bulk_param
temporary to the value nullptr before invoking triggers and restoring
its original value on finishing execution of a trigger is moved to the method
  Table_triggers_list::process_triggers
that be invoked ultimately for any kind of triggers.
This commit is contained in:
Dmitry Shulga
2024-12-13 09:29:23 +07:00
parent 0b7fa4c267
commit 54c1031b74
6 changed files with 133 additions and 31 deletions
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9
sql/sql_trigger.cc
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@ -2288,6 +2288,14 @@ bool Table_triggers_list::process_triggers(THD *thd,
*/
save_current_select= thd->lex->current_select;
/*
Reset the sentinel thd->bulk_param in order not to consume the next
values of a bound array in case one of statement executed by
the trigger's body is a DML statement.
*/
void *save_bulk_param= thd->bulk_param;
thd->bulk_param= nullptr;
do {
thd->lex->current_select= NULL;
err_status=
@ -2297,6 +2305,7 @@ bool Table_triggers_list::process_triggers(THD *thd,
&trigger->subject_table_grants);
status_var_increment(thd->status_var.executed_triggers);
} while (!err_status && (trigger= trigger->next));
thd->bulk_param= save_bulk_param;
thd->lex->current_select= save_current_select;
thd->restore_sub_statement_state(&statement_state);