IF EXISTS
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
For idempotent execution of DDL scripts, the useful IF EXISTS clause is supported by jOOQ, and emulated using an anonymous, procedural block if possible.
// Drop a type
create.dropTypeIfExists("type").execute();
Dialect support
This example using jOOQ:
dropTypeIfExists("type")
Translates to the following dialect specific expressions:
-- AURORA_POSTGRES, COCKROACHDB, H2, ORACLE, POSTGRES, YUGABYTEDB DROP TYPE IF EXISTS type -- ACCESS, ASE, AURORA_MYSQL, BIGQUERY, DB2, DERBY, DUCKDB, EXASOL, FIREBIRD, HANA, HSQLDB, INFORMIX, MARIADB, MEMSQL, -- MYSQL, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLITE, SQLSERVER, SYBASE, TERADATA, TRINO, VERTICA /* UNSUPPORTED */
(These are currently generated with jOOQ 3.19, see #10141), or translate your own on our website
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