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日期:2025-06-12
SQL Server: CASE WHEN OR THEN ELSE END => the OR is not ... It more
closely fits the OP's question, and if you want to nest some ......
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日期:2025-06-12
If you are from MS SQL Server background and trying to write query with TOP keyword in MySQL it won't work. MS SQL Server equivalent of Top keyword in MySQL is Limit Example 1: Simple Select statement without where clause or order by clause In MS SQL ......
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日期:2025-06-08
I could use the ufn_RegExSplit function in the 'FROM' section of the select eg.: SELECT * FROM dbo.ufn_RegExSplit('Tasss, Je; Heeeey, Wee; Li, Robert' ,';',1) but my question is that how can i use it in the select section eg. (something like): Select dbo....
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日期:2025-06-12
Actually there is a wildcard equality test. I am not sure why you would group by field1, that would seem impossible in your example. I tried to fit it into your question: SELECT FIELD1, CASE WHEN FIELD2 = 1 THEN FIELD3 END AS CASEFIELD1, CASE WHEN ......
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日期:2025-06-08
CASE 可以用在允許有效運算式的任何陳述式或子句中。例如,您可以在SELECT、UPDATE、DELETE 和SET 之類的陳述式,以及select_list、IN、WHERE、ORDER ......
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日期:2025-06-13
If no input_expression = when_expression evaluates to TRUE, SQL Server ... Within a SELECT statement, a simple CASE function allows only an equality check; ......
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日期:2025-06-12
The SQL Server (Transact-SQL) CASE statement has the functionality of an IF-THEN-ELSE statement. You can use the CASE statement within a SQL statement....
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日期:2025-06-13
Case when and else : Case « Select Query « SQL Server / T-SQL....