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ALTER DOMAIN .. DROP CONSTRAINT IF EXISTS

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

A popular subclause of DDL statements that jOOQ can usually emulate, is the IF EXISTS clause:

// Drop CHECK constraints from a domain
create.alterDomain("d").dropConstraintIfExists("c").execute();

Dialect support

This example using jOOQ:

alterDomain("d").dropConstraintIfExists("c")

Translates to the following dialect specific expressions:

Aurora Postgres, Postgres

ALTER DOMAIN d DROP CONSTRAINT IF EXISTS c

Firebird

EXECUTE BLOCK
AS
BEGIN
  EXECUTE STATEMENT '
    ALTER DOMAIN d DROP CONSTRAINT
  ';
  WHEN sqlcode -607 DO
    BEGIN END
END

ASE, Access, Aurora MySQL, BigQuery, ClickHouse, CockroachDB, DB2, Derby, DuckDB, Exasol, H2, HSQLDB, Hana, Informix, MariaDB, MemSQL, MySQL, Oracle, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Sybase, Teradata, Trino, Vertica, YugabyteDB

/* UNSUPPORTED */
Generated with jOOQ 3.20. Translate your own SQL on our website

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