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mysqltriggersinformation-schema

MySQL disable all triggers

For test correctness of query I need disable all triggers in db. I see that in information_schema exists table TRIGGERS. Is possible temporarily disable all triggers using this table? E.g. like: 

update TRIGGERS set TRIGGERS_SCHEMA='myschema_new' 
where TRIGGERS_SCHEMA='myschema'

and after finish all test return all triggers like:

update TRIGGERS set TRIGGERS_SCHEMA='myschema'
where TRIGGERS_SCHEMA='myschema_new'

May be this can corrupt db or after triggers will not works? I didn't found about it in documentation.

Solution

  • You can't disable triggers directly and I wouldn't recommend doing what you're suggesting but you could have your trigger check if a variable (in my example below @disable_triggers) is NULL before executing the trigger's content. For example:

    Query:

    SET @disable_triggers = 1;
// Your update statement goes here.
SET @disable_triggers = NULL;

    Triggers:

    IF @disable_triggers IS NULL THEN
    // Do something use as the trigger isn't disabled.
END IF;