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ALTER SCHEMA 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 schema
create.alterSchemaIfExists("old_schema").renameTo("new_schema").execute();
Dialect support
This example using jOOQ:
alterSchemaIfExists("s").renameTo("t")
Translates to the following dialect specific expressions:
H2, Snowflake
ALTER SCHEMA IF EXISTS s RENAME TO t
Hana
DO BEGIN
DECLARE EXIT HANDLER FOR SQL_ERROR_CODE 362 BEGIN END;
EXECUTE IMMEDIATE '
RENAME SCHEMA s TO t
';
END;
ASE, Access, Aurora MySQL, Aurora Postgres, BigQuery, ClickHouse, CockroachDB, DB2, Derby, DuckDB, Exasol, Firebird, HSQLDB, Informix, MariaDB, MemSQL, MySQL, Oracle, Postgres, Redshift, SQLDataWarehouse, SQLServer, SQLite, Sybase, Teradata, Trino, Vertica, YugabyteDB
/* UNSUPPORTED */
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