sql if exists insert else update
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');. , 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 . , 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', ..., IF EXISTS (SELECT * FROM Table1 WHERE Column1='SomeValue') UPDATE Table1 SET (...) WHERE Column1='SomeValue' ELSE INSERT ...,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. , 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 rows in the targeted table grows., 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 or PRIMARY KEY , an UPDATE of the old row is performed, 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 ...
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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 |