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ALTER TABLE .. ADD COLUMN IF NOT 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 NOT EXISTS
clause:
Dialect support
This example using jOOQ:
alterTable("t").addIfNotExists("c", INTEGER)
Translates to the following dialect specific expressions:
Aurora Postgres, DuckDB, Exasol, H2, MariaDB, Postgres, YugabyteDB
ALTER TABLE t ADD IF NOT EXISTS c int
BigQuery
ALTER TABLE t ADD COLUMN IF NOT EXISTS c int64
ClickHouse
ALTER TABLE t ADD COLUMN IF NOT EXISTS c Nullable(integer)
CockroachDB
ALTER TABLE t ADD IF NOT EXISTS c int4
DB2
BEGIN DECLARE CONTINUE HANDLER FOR SQLSTATE '42711' BEGIN END; EXECUTE IMMEDIATE ' ALTER TABLE t ADD c integer '; END
Hana
DO BEGIN DECLARE EXIT HANDLER FOR SQL_ERROR_CODE 308 BEGIN END; EXECUTE IMMEDIATE ' ALTER TABLE t ADD (c integer) '; END;
Oracle
BEGIN EXECUTE IMMEDIATE ' ALTER TABLE t ADD c number(10) '; EXCEPTION WHEN others THEN IF sqlerrm LIKE 'ORA-01430%' THEN NULL; ELSE RAISE; END IF; END;
SQLDataWarehouse
BEGIN TRY EXEC sp_executesql N' ALTER TABLE t ADD c int '; END TRY BEGIN CATCH IF error_number() != 2705 BEGIN DECLARE @ErrorMessage NVARCHAR(4000) = ERROR_MESSAGE(); DECLARE @ErrorSeverity INT = ERROR_SEVERITY(); DECLARE @ErrorState INT = ERROR_STATE(); RAISERROR (@ErrorMessage, @ErrorSeverity, @ErrorState); END; END CATCH
SQLServer
BEGIN TRY EXEC sp_executesql N' ALTER TABLE t ADD c int '; END TRY BEGIN CATCH IF error_number() != 2705 THROW; END CATCH
Teradata
ALTER TABLE t ADD IF NOT EXISTS c integer
Trino
ALTER TABLE t ADD COLUMN IF NOT EXISTS c int
ASE, Access, Aurora MySQL, Derby, Firebird, HSQLDB, Informix, MemSQL, MySQL, Redshift, SQLite, Snowflake, Sybase, Vertica
/* UNSUPPORTED */
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