ALTER TYPE 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:
// Renaming the type
create.alterTypeIfExists("old_type").renameTo("new_type").execute();
Dialect support
This example using jOOQ:
alterTypeIfExists("old").renameTo("new")
Translates to the following dialect specific expressions:
Aurora Postgres, Postgres
DO $$ BEGIN ALTER TYPE old RENAME TO new; EXCEPTION WHEN SQLSTATE '42704' THEN NULL; END $$
ASE, Access, Aurora MySQL, BigQuery, ClickHouse, CockroachDB, DB2, Derby, DuckDB, Exasol, Firebird, H2, HSQLDB, Hana, Informix, MariaDB, MemSQL, MySQL, Oracle, Redshift, SQLDataWarehouse, SQLServer, SQLite, Snowflake, Sybase, Teradata, Trino, Vertica, YugabyteDB
/* UNSUPPORTED */
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