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I assume there is a way of doing this from code, at least some good workaround.
Please consider that I do not want to delete all tables (I've seen this command), just to delete rows from them but to keep existing schema and all constraints.
Maybe I can somehow obtain the list of all tables from metadata and apply TRUNCATE command for each separately? But what about their relations and foreign keys?
Any Idea?
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Then truncate all tables, on by one: TRUNCATE TABLE table1; TRUNCATE TABLE table2; TRUNCATE TABLE table3; Or you can print out the truncate statements all at once by executing this query: SELECT Concat('TRUNCATE TABLE ', TABLE_NAME) FROM INFORMATION_SCHEMA.
Try this following options. Drop Table: Drop Table is a command that deletes the respective table and its structure. DROP TABLE TABLE_NAME; Drop Schema:Drop Schema is a command that drops a respective schema from the database server.
It Removes all the data. Truncate table cannot activate a trigger because the operation does not log individual row deletions. Faster in performance wise, because it doesn't keep any logs.
You may do it this way:
Disable referential integrity using SET REFERENTIAL_INTEGRITY FALSE
Get the list of all tables using SHOW TABLES
Delete the data from each table using TRUNCATE TABLE tableName
Enable referential integrity using SET REFERENTIAL_INTEGRITY TRUE
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