23 lines
1.0 KiB
MySQL
23 lines
1.0 KiB
MySQL
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-- https://dev.mysql.com/doc/refman/8.0/en/create-trigger.html
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/* CREATE
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[DEFINER = user]
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TRIGGER [IF NOT EXISTS] trigger_name
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{ BEFORE | AFTER }
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{ INSERT | UPDATE | DELETE }
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ON tbl_name FOR EACH ROW
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[{ FOLLOWS | PRECEDES } other_trigger_name]
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trigger_body
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*/
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CREATE TRIGGER IF NOT EXISTS my_trigger BEFORE INSERT ON your_table FOR EACH ROW SET NEW.column_name = some_value;
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CREATE TRIGGER my_trigger BEFORE INSERT ON your_table FOR EACH ROW SET NEW.column_name = some_value;
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CREATE TRIGGER my_trigger AFTER INSERT ON your_table FOR EACH ROW SET NEW.column_name = some_value;
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CREATE TRIGGER my_trigger AFTER UPDATE ON your_table FOR EACH ROW SET NEW.column_name = some_value;
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CREATE TRIGGER my_trigger AFTER DELETE ON your_table FOR EACH ROW SET NEW.column_name = some_value;
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CREATE TRIGGER my_trigger AFTER INSERT ON your_table FOR EACH ROW FOLLOWS other_trigger_name SET NEW.column_name = some_value;
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CREATE TRIGGER my_trigger AFTER INSERT ON your_table FOR EACH ROW PRECEDES other_trigger_name SET NEW.column_name = some_value;
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