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存储过程结果审核后的自定义结果
原标题:custom result after reviewing a stored procedures result

如果执行存储过程没有取回行,则我想返回自定义值作为行的值。 Wǒ xiǎng huí tuì zìdìngyì zhí zuò wéi xíng de zhí shǔ jìn háng méi yǒu qǔhuò shí.

我该怎么办?

问题回答

你可以使用内置函数 ROW_COUNT() 来测试查询是否返回了任何行。如果返回的行数为零,则可以运行替代的 SQL 语句以返回自定义值:

--Execute your SQL statement
SELECT * FROM myTable

IF ROW_COUNT() = 0 
BEGIN
     --SQL to return your custom values instead
     SELECT value1, value2, etc.
END

只需编写自己的SELECT语句,包含想要返回给用户的值。类似于这样:

Select
   MyValue1,
   MyValue2,
   Myvalue3




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