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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

ASE, Access, Aurora MySQL, BigQuery, DB2, Derby, DuckDB, Exasol, Firebird, HSQLDB, Hana, Informix, MariaDB, MemSQL, MySQL, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Sybase, Teradata, Trino, Vertica

/* UNSUPPORTED */

(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website

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