Question

如何使用标量值函数结果对整个SQL查询进行分组。

SELECT Col1,Col2,udf_IsNumaric_Get(Param1,Param2)
FROM Table1
WHERE Col1 LIKE '%123%'
GROUP BY --Function result
ORDER BY --Function result

OR

SELECT Col1,Col2,(SELECT COUNT(*) FROM Table2) AS Count
FROM Table1
WHERE Col1 LIKE '%123%'
GROUP BY --Count
ORDER BY --Count

是否可以使用udf_IsNumaric_Get标量值函数的输出或使用第二个示例中的SELECT语句对整个SQL查询进行分组。

Answer 1

您可以使用子查询来实现它：

SELECT t.Col1,t.Col2,t.Count FROM
  (SELECT Col1,Col2,(SELECT COUNT(*) FROM Table2) AS Count
   FROM Table1
   WHERE Col1 LIKE '%123%') as t
   GROUP BY Count
   ORDER BY Count

通过使用SQL Server的函数结果进行分组

1 个答案: