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WHEN MATCHED THEN UPDATE

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

When there's a MATCH between SOURCE row and TARGET row, then the TARGET row can be updated with values from the SOURCE row, similar to what the UPDATE .. FROM clause would allow.

Dialect support

This example using 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)))
    .whenMatchedThenUpdate().set(BOOK_TO_BOOK_STORE.STOCK, BOOK_TO_BOOK_STORE_STAGING.STOCK)

Translates to the following dialect specific expressions:

Databricks, Postgres, Snowflake, Teradata, Vertica

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
  STOCK = BOOK_TO_BOOK_STORE_STAGING.STOCK

DB2, Derby, Exasol, Firebird, H2, HSQLDB, Hana, 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 UPDATE SET
  BOOK_TO_BOOK_STORE.STOCK = BOOK_TO_BOOK_STORE_STAGING.STOCK

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.STOCK = BOOK_TO_BOOK_STORE_STAGING.STOCK

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 UPDATE SET
  BOOK_TO_BOOK_STORE.STOCK = BOOK_TO_BOOK_STORE_STAGING.STOCK;

ASE, Access, Aurora MySQL, Aurora Postgres, BigQuery, ClickHouse, CockroachDB, DuckDB, Informix, MariaDB, MemSQL, MySQL, Redshift, SQLDataWarehouse, SQLite, Trino, YugabyteDB

/* UNSUPPORTED */
Generated with jOOQ 3.21. Translate your own SQL on our website

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