将 SQL 文本显示为整数 [重复]

Question

SELECT 'EXAMPLE' as ENTITY
,[Posting Date] as "POSTING DATE"
,[Source No_] as "CODE"
,[Amount] as "AMOUNT"
,[Global Dimension 2 Code] as "COST CENTRE"
,[Description] as "DESCRIPTION"
***,substring([External Document No_], 8, 20), as "CLAIM ID"***
,[Entry No_] as "ENTRY NUMBER"
,datename(month,[Posting Date]) as "MONTH"
,YEAR([Posting Date]) as "YEAR"
FROM [LIVEBC].[dbo].[EXAMPLE]
where [G_L] = '2153' and [Source Code] = 'EMP'

上面的脚本有效，但我想将 *** 行转换为整数，以便成功地以数字而非文本的形式进行排序。

Answer 1

你可以使用cast():

cast(substring([External Document No_], 8, 20) as bigint)

但是，我可能会建议使用数字/小数：

cast(substring([External Document No_], 8, 20) as decimal(20, 0))

您不必担心溢出。