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DROP SEQUENCE 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 sequence
create.dropSequenceIfExists("sequence").execute();
Dialect support
This example using jOOQ:
dropSequenceIfExists("sequence")
Translates to the following dialect specific expressions:
Aurora Postgres, CockroachDB, DuckDB, H2, HSQLDB, Informix, MariaDB, Oracle, Postgres, Snowflake, Vertica, YugabyteDB
DROP SEQUENCE IF EXISTS sequence
DB2
BEGIN
DECLARE CONTINUE HANDLER FOR SQLSTATE '42704' BEGIN END;
EXECUTE IMMEDIATE '
DROP SEQUENCE sequence
';
END
Firebird
EXECUTE BLOCK
AS
BEGIN
EXECUTE STATEMENT '
DROP SEQUENCE sequence
';
WHEN sqlcode -607 DO
BEGIN END
END
Hana
DO BEGIN
DECLARE EXIT HANDLER FOR SQL_ERROR_CODE 313 BEGIN END;
EXECUTE IMMEDIATE '
DROP SEQUENCE sequence
';
END;
SQLServer
BEGIN TRY DROP SEQUENCE sequence END TRY BEGIN CATCH IF error_number() != 3701 THROW; END CATCH
Sybase
BEGIN DROP SEQUENCE sequence; EXCEPTION WHEN others THEN END;BEGIN DROP SEQUENCE sequence '; WHEN sqlcode -607 DO BEGIN END END;
ASE, Access, Aurora MySQL, BigQuery, ClickHouse, Derby, Exasol, MemSQL, MySQL, Redshift, SQLDataWarehouse, SQLite, Teradata, Trino
/* UNSUPPORTED */
(These are currently generated with jOOQ 3.20, see #10141), or translate your own on our website
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