将 Oracle 合并查询转换为 mysql mySQL 查询
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时间：2020-09-18 17:37:44 来源:igfitidea点击:
Converting an Oracle merge query into mysql mySQL query
提问by
MERGE INTO PAGEEDITCONTROL A
USING (SELECT
'1585' AS PAGEID
,'admin' AS EDITUSER
,sysdate AS EDITDATE
FROM DUAL) B
ON (A.PAGEID = B.PAGEID)
WHEN MATCHED THEN
UPDATE SET
A.EDITUSER = B.EDITUSER
,A.EDITDATE = B.EDITDATE
WHEN NOT MATCHED THEN
INSERT (
A.PAGEID
,A.EDITUSER
,A.EDITDATE
)VALUES(
B.PAGEID
,B.EDITUSER
,B.EDITDATE
)
回答by Henning
MySQL has a similar construct which looks less like an upsert, but more like an insate: INSERT ... ON DUPLICATE KEY UPDATE(see the MySQL reference manual).
MySQL 有一个类似的结构，它看起来不像 upsert，而更像是一个 insate:（INSERT ... ON DUPLICATE KEY UPDATE参见MySQL 参考手册）。
回答by laksys
INSERT INTO
pageeditcontrol (pageid, edituser, editdate)
VALUES ('1585', 'admin', sysdate())
ON DUPLICATE KEY UPDATE
edituser = values(edituser),
editdate = values(editdate);
