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lang-sql
MERGE. In general, the concept is often referred to as"UPSERT".gebandtopicit will work (ALTER TABLE table ADD UNIQUE geb_by_topic (geb, topic)).MERGEbut I'm not sure if its syntax is identical to SQL Server's.NULL, to allow theauto_incrementbehavior to work (which otherwise, yes, works as you presume; see dev.mysql.com/doc/refman/5.5/en/example-auto-increment.html).VALUES(col)to get the value from the insert argument in case of duplicate. Eg:ON DUPLICATE UPDATE b = VALUES(b), c = VALUES(c)