sql if exists insert else update
SQL needs an official syntax for this use case that doesn't force ... When using batch insert use the following syntax: ... attempt to insert id='1' will update name and age and previous name ... Or else it just inserts another row.,Create a UNIQUE constraint on your subs_email column, if one does not already exist: ALTER TABLE subs ADD UNIQUE (subs_email). Use INSERT .
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 sql if exists insert else update 相關參考資料
How to insert or update using single query? - Database ...
You can try this. IF EXISTS(select * from test where id=30122) update test set name='john' where id=3012 ELSE insert into test(name) values('john');. https://dba.stackexchange.com Insert into a MySQL table or update if exists - Stack Overflow
SQL needs an official syntax for this use case that doesn't force ... When using batch insert use the following syntax: ... attempt to insert id='1' will update name and age and previous ... https://stackoverflow.com SQL - IF EXISTS UPDATE ELSE INSERT INTO - Stack Overflow
Create a UNIQUE constraint on your subs_email column, if one does not already exist: ALTER TABLE subs ADD UNIQUE (subs_email). Use INSERT . https://stackoverflow.com SQL - IF EXISTS UPDATE ELSE INSERT Syntax Error - Stack ...
INSERT INTO component_psar (tbl_id, row_nr, col_1, col_2, col_3, col_4, col_5, col_6, unit, add_info, fsar_lock) VALUES('2', '1', '1', '1', '1', '1',&n... https://stackoverflow.com SQL IF EXISTS update else insert @ 風箏:: 痞客邦::
IF EXISTS (SELECT * FROM Table1 WHERE Column1='SomeValue') UPDATE Table1 SET (...) WHERE Column1='SomeValue' ELSE INSERT ... https://lernju.pixnet.net SQL if not exists insert else update - Stack Overflow
You could use MERGE for this: MERGE Data_Archive.dbo.Company WITH (HOLDLOCK) AS a USING OLD.dbo.Company AS o ON a.CompanyID = b. https://stackoverflow.com SQL: If Exists Update Else Insert – Jeremiah Clark's Blog
SQL: If Exists Update Else Insert. approach does work, however it might not always be the best approach. approach. The saved table/index scan can increase performance quite a bit as the number of row... https://blogs.msdn.microsoft.c UPDATE if exists else INSERT in SQL - Stack Overflow
MySQL already has INSERT ... ON DUPLICATE KEY UPDATE which does exactly same thing. If you specify ON DUPLICATE KEY UPDATE , and a row is inserted that would cause a duplicate value in a UNIQUE index... https://stackoverflow.com UPDATE if exists else INSERT in SQL Server 2008 - Stack Overflow
Many people will suggest you use MERGE , but I caution you against it. By default, it doesn't protect you from concurrency and race conditions ... https://stackoverflow.com |