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日期:2024-04-27
ELSE 'Unknown' END, FROM titles This statement would return results similar to these: Title Price ... ......
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日期:2024-04-28
30 Aug 2007 ... UPDATE TABLE SET. A (only if its null)= B.a ,X= B.x ... I want to set the age to
Null if it is less than 18...
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日期:2024-04-26
Therefore I would like to set the option IF @parameter IS NULL THEN keep the
value that is already ......
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日期:2024-04-22
The query looks like this i SQL: UPDATE tab1 SET budgpost_gr1= CASE WHEN (budgpost in (1001,1012,50055)) THEN 'BP_GR_A' WHEN (budgpost in (5,10,98,0)) THEN 'BP_GR_B' WHEN (budgpost in (11,876,7976,67465)) ELSE 'Missing' END ......
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日期:2024-04-25
p1 Search Engine 120000 p2 Programming 95000 p3 SQL 186500 (3 rows affected) 1> 2> -- Use CASE in the UPDATE statement. 3> 4> UPDATE project SET ......
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日期:2024-04-26
WHERE Specifies the conditions that limit the rows that are updated. There are two forms of update based on which form of the WHERE clause is used: Searched updates specify a search condition to qualify the rows to delete. Positioned updates use the ......
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日期:2024-04-21
判斷指定的運算式是否為 NULL。 適用於: SQL Server ( SQL Server 2008 透過目前版本)、Windows Azure SQL 資料庫 ......
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日期:2024-04-27
We can use various DML statements like INSERT, SELECT, DELETE and UPDATE with a CASE statement. ... If it is NULL, then update the value with the sal column of the employee ......