更新された質問:
ALTER PROC Proc_Test
(
@GrpBy as varchar(20)
)
AS
Declare @TableTax table(
Taxid int,
TaxRange nvarchar(20),
MinLimit int,
MaxLimit int
)
SELECT t1.*
FROM
(
SELECT
GroupBy = CASE @GrpBy
WHEN 'JobGrade' THEN Employee.Grade
WHEN 'Tax Slab' THEN tblTax.TaxRange
END, (20 more calculated columns)
FROM @TableTax AS tblTax, Employee
LEFT JOIN Grade on Grade.Grade = Employee.Grade
WHERE
Employee.Salary between tblTax.MinLimit and tblTax.Maxlimit
GROUP BY
CASE @GrpBy
WHEN 'JobGrade' THEN Employee.Grade
WHEN 'Tax Slab' THEN tblTax.TaxRange
END
) AS t1
ORDER BY GroupBy
結果を TaxId で並べ替えたい。この順序は、Tax Slab がフロントエンドで選択されている場合にのみ適用されます。