ALTER INDEX IF EXISTS
适用于 ✅ 开源版 ✅ 专业版 ✅ 企业版
DDL 语句中一个常见的子句是 IF EXISTS 子句，jOOQ 通常可以模拟它
// Renaming the index
create.alterIndexIfExists("old_index").renameTo("new_index").execute();
方言支持
此示例使用 jOOQ
alterIndexIfExists("i").renameTo("j")
翻译成以下特定方言的表达式
Aurora Postgres, CockroachDB, H2, Postgres
ALTER INDEX IF EXISTS i RENAME TO j
DB2
BEGIN
DECLARE CONTINUE HANDLER FOR SQLSTATE '42704' BEGIN END;
EXECUTE IMMEDIATE '
RENAME INDEX i TO j
';
END
Hana
DO BEGIN
DECLARE EXIT HANDLER FOR SQL_ERROR_CODE 259 BEGIN END;
EXECUTE IMMEDIATE '
RENAME INDEX i TO j
';
END;
MariaDB
BEGIN NOT ATOMIC DECLARE CONTINUE HANDLER FOR SQLSTATE '42000' BEGIN END; DECLARE CONTINUE HANDLER FOR SQLSTATE '42S02' BEGIN END; ALTER TABLE RENAME INDEX i TO j; END
MySQL
CREATE PROCEDURE block_1752830487509_6173005() MODIFIES SQL DATA BEGIN DECLARE CONTINUE HANDLER FOR SQLSTATE '42000' BEGIN END; ALTER TABLE RENAME INDEX i TO j; END; CALL block_1752830487509_6173005(); DROP PROCEDURE block_1752830487509_6173005;
Oracle
BEGIN
EXECUTE IMMEDIATE '
ALTER INDEX i RENAME TO j
';
EXCEPTION
WHEN others THEN
IF sqlerrm LIKE 'ORA-01418%' THEN NULL;
ELSE RAISE;
END IF;
END;
SQLDataWarehouse
BEGIN TRY
EXEC sp_rename 'i', j, 'INDEX'
END TRY
BEGIN CATCH
IF error_number() NOT IN (2714) 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_rename 'i', j, 'INDEX' END TRY BEGIN CATCH IF error_number() NOT IN (2714) THROW; END CATCH
ASE, Access, Aurora MySQL, BigQuery, ClickHouse, Databricks, Derby, DuckDB, Exasol, Firebird, HSQLDB, Informix, MemSQL, Redshift, SQLite, Snowflake, Sybase, Teradata, Trino, Vertica, YugabyteDB
/* UNSUPPORTED */
使用 jOOQ 3.21 生成。早期 jOOQ 版本的支持可能有所不同。 在我们的网站上翻译您自己的 SQL
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