sql update if else
IF @flag = 1 UPDATE table_name SET column_A = column_A + @new_value WHERE ID = @ID; ELSE UPDATE table_name SET column_B = column_B + ... ,Use conditional logic, something like: update t set column1 = coalesce(column1, '123'), column2 = (case when column1 is null then column2 else '123' end);. ,The CASE expression. UPDATE User SET Name = CASE WHEN LEN(@NAME) > 0 THEN @Name ELSE Name END, Password = CASE WHEN ... , SQL IF EXISTS update else insert. 連最基本的都記不太住，老囉！！ 以下提供的是一般在大量倒資料時，會用到的，請僅慎使用！！ 哈！, There are two possibilities here. There is a limitation with linked servers that only allows a nest level of 10 when using CASE expressions., check and keep old or update with new, same for other fields: UPDATE cu SET [sentbirth] = CASE WHEN cu.[sentbirth] = '1' THEN cu.[sentbirth] ...,try the following update pm_users set user_status = case when user_status = 0 then 1 else 0 end where user_id = 3 ... SQL Fiddle DEMO · share improve this ... , You are looking for the CASE expression: Column2 = CASE WHEN @NewColumnValue IS NULL THEN 'False' ELSE 'True' END.,this should work update table_name set column_b = case when column_a = 1 then 'Y' else null end, set column_c = case when column_a = 2 then 'Y' else null ... ,The (sort of) equivalent is to use CASE expressions: UPDATE main SET main.field1 = CASE WHEN staging.field1 IS NULL THEN -- WHEN staging.field2 IS ...
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 sql update if else 相關參考資料
if condition in sql server update query - Stack Overflow
IF @flag = 1 UPDATE table_name SET column_A = column_A + @new_value WHERE ID = @ID; ELSE UPDATE table_name SET column_B = column_B + ... https://stackoverflow.com if else in sql update query - Stack Overflow
Use conditional logic, something like: update t set column1 = coalesce(column1, '123'), column2 = (case when column1 is null then column2 else '123' end);. https://stackoverflow.com Implementing IF Condition Within a T-SQL UPDATE Statement - Stack ...
The CASE expression. UPDATE User SET Name = CASE WHEN LEN(@NAME) > 0 THEN @Name ELSE Name END, Password = CASE WHEN ... https://stackoverflow.com SQL IF EXISTS update else insert @ 風箏:: 痞客邦::
SQL IF EXISTS update else insert. 連最基本的都記不太住，老囉！！ 以下提供的是一般在大量倒資料時，會用到的，請僅慎使用！！ 哈！ http://lernju.pixnet.net sql server - How to Update a Column Using CASE Statement with More ...
There are two possibilities here. There is a limitation with linked servers that only allows a nest level of 10 when using CASE expressions. https://dba.stackexchange.com SQL UPDATE using an IF statement - Stack Overflow
check and keep old or update with new, same for other fields: UPDATE cu SET [sentbirth] = CASE WHEN cu.[sentbirth] = '1' THEN cu.[sentbirth] ... https://stackoverflow.com Update same table with IF ELSE Condition in MySQL - Stack Overflow
try the following update pm_users set user_status = case when user_status = 0 then 1 else 0 end where user_id = 3 ... SQL Fiddle DEMO · share improve this ... https://stackoverflow.com Using a IF Statement within a TSQL UPDATE - Stack Overflow
You are looking for the CASE expression: Column2 = CASE WHEN @NewColumnValue IS NULL THEN 'False' ELSE 'True' END. https://stackoverflow.com Using IF..ELSE in UPDATE (SQL server 2005 andor ACCESS 2007 ...
this should work update table_name set column_b = case when column_a = 1 then 'Y' else null end, set column_c = case when column_a = 2 then 'Y' else null ... https://stackoverflow.com Using ifelse in insert and update statements - Stack Overflow
The (sort of) equivalent is to use CASE expressions: UPDATE main SET main.field1 = CASE WHEN staging.field1 IS NULL THEN -- WHEN staging.field2 IS ... https://stackoverflow.com |