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当匹配时则删除

适用于 ✅ 开源版   ✅ 专业版   ✅ 企业版

SOURCE 行和 TARGET 行之间存在 MATCH 时,可以删除 TARGET 行,类似于 DELETE .. USING 子句允许的操作。

方言支持

此示例使用 jOOQ

mergeInto(BOOK_TO_BOOK_STORE)
    .using(BOOK_TO_BOOK_STORE_STAGING)
    .on(BOOK_TO_BOOK_STORE.BOOK_ID.eq(BOOK_TO_BOOK_STORE_STAGING.BOOK_ID)
        .and(BOOK_TO_BOOK_STORE.NAME.eq(BOOK_TO_BOOK_STORE_STAGING.NAME)))
    .whenMatchedThenDelete()

翻译成以下特定方言的表达式

DB2, Databricks, Derby, Firebird, H2, HSQLDB, Postgres, Snowflake, Sybase

MERGE INTO BOOK_TO_BOOK_STORE
USING BOOK_TO_BOOK_STORE_STAGING
ON (
  BOOK_TO_BOOK_STORE.BOOK_ID = BOOK_TO_BOOK_STORE_STAGING.BOOK_ID
  AND BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE_STAGING.NAME
)
WHEN MATCHED THEN DELETE

Exasol

MERGE INTO BOOK_TO_BOOK_STORE
USING BOOK_TO_BOOK_STORE_STAGING
ON (
  BOOK_TO_BOOK_STORE.BOOK_ID = BOOK_TO_BOOK_STORE_STAGING.BOOK_ID
  AND BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE_STAGING.NAME
)
WHEN MATCHED THEN UPDATE SET
  BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE.NAME DELETE

Oracle

MERGE INTO BOOK_TO_BOOK_STORE
USING BOOK_TO_BOOK_STORE_STAGING
ON ((
  BOOK_TO_BOOK_STORE.BOOK_ID = BOOK_TO_BOOK_STORE_STAGING.BOOK_ID
  AND BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE_STAGING.NAME
))
WHEN MATCHED THEN UPDATE SET
  BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE.NAME DELETE

Redshift

DELETE FROM BOOK_TO_BOOK_STORE
USING BOOK_TO_BOOK_STORE_STAGING
WHERE (
  BOOK_TO_BOOK_STORE.BOOK_ID = BOOK_TO_BOOK_STORE_STAGING.BOOK_ID
  AND BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE_STAGING.NAME
)

SQLServer

MERGE INTO BOOK_TO_BOOK_STORE
USING BOOK_TO_BOOK_STORE_STAGING
ON (
  BOOK_TO_BOOK_STORE.BOOK_ID = BOOK_TO_BOOK_STORE_STAGING.BOOK_ID
  AND BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE_STAGING.NAME
)
WHEN MATCHED THEN DELETE;

Teradata

MERGE INTO BOOK_TO_BOOK_STORE
USING BOOK_TO_BOOK_STORE_STAGING
ON (
  BOOK_TO_BOOK_STORE.BOOK_ID = BOOK_TO_BOOK_STORE_STAGING.BOOK_ID
  AND BOOK_TO_BOOK_STORE.NAME = BOOK_TO_BOOK_STORE_STAGING.NAME
)
WHEN MATCHED THEN UPDATE SET
  NAME = BOOK_TO_BOOK_STORE.NAME DELETE

ASE, Access, Aurora MySQL, Aurora Postgres, BigQuery, ClickHouse, CockroachDB, DuckDB, Hana, Informix, MariaDB, MemSQL, MySQL, SQLDataWarehouse, SQLite, 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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