"Insert if not exists" in both MySQL and HSQLDB -


is there sql statement (or atomic sequence of statements) supported both mysql , hsqldb insert values if aren't there?

i'm working on app uses mysql production database , hsqldb unit tests; i'd have single "initial data import when tables empty" script.

mysql supports insert ignore, replace into , insert ... on duplicate key update ..., hsqldb doesn't; conversely, hsqldb supports merge mysql doesn't.

look @ accepted answer here, think way go, if not want preprocess scripts other script.


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