Question

您好我正在尝试以下查询。 ProjectID的输出是1,2,3。我试图从其他表使用ProjectID获取数据。

  DECLARE @ProjectID varchar(100)
 DECLARE @ImpactIntakeID varchar(100)

set @ProjectID =
(SELECT STUFF ((SELECT ',' + CAST(Proj_ID AS VARCHAR) FROM PROJECT
 WHERE YEAR(Enter_Dt) < (YEAR(GETDATE-()-7)) FOR XML PATH('')), 1, 1, '') 
AS Enter_Date)

print @ProjectID

set @ImpactIntakeID = 
(SELECT STUFF ((SELECT ',' + CAST([IMPCT_INTAKE_ID] AS VARCHAR) FROM [IMPCT_INTAKE_REQ]
 WHERE [CNSDR_PROJ_ID] in (@ProjectID) FOR XML PATH('')), 1, 1, '') 
 AS ImpactIntakeID)

print @ImpactIntakeID

我收到转换错误。将varchar值'1,2,3'转换为数据类型int时转换失败。我不确定我在哪里缺少转换。我也在下面试过..

 set @ImpactIntakeID = 
(SELECT STUFF ((SELECT ',' + CAST([IMPCT_INTAKE_ID] AS VARCHAR) FROM [IMPCT_INTAKE_REQ]
WHERE [CNSDR_PROJ_ID] in (''+@ProjectID+'') FOR XML PATH('')), 1, 1, '') 
AS ImpactIntakeID)

和

  set @ImpactIntakeID = 
 (SELECT STUFF ((SELECT ',' + CAST([IMPCT_INTAKE_ID] AS VARCHAR) FROM [IMPCT_INTAKE_REQ]
 WHERE CAST([CNSDR_PROJ_ID] AS VARCHAR) in (@ProjectID) FOR XML PATH('')), 1, 1, '') 
 AS ImpactIntakeID)

任何人都可以帮助我失去转换的地方......

Answer 1

试试这个：

SET @ImpactIntakeID = 
(SELECT STUFF ((SELECT ',' + CAST([IMPCT_INTAKE_ID] AS VARCHAR) FROM [IMPCT_INTAKE_REQ]
 WHERE [CNSDR_PROJ_ID] IN (SELECT Proj_ID FROM PROJECT WHERE YEAR(Enter_Dt) < (YEAR(GETDATE()-7))) FOR XML PATH('')), 1, 1, '') 
 AS ImpactIntakeID)

或

SET @ImpactIntakeID = (SELECT STUFF ((SELECT ',' + CAST([IMPCT_INTAKE_ID] AS VARCHAR) FROM [IMPCT_INTAKE_REQ] WHERE ',' + @ProjectID + ',' LIKE '%,' + CONVERT(VARCHAR(20), [CNSDR_PROJ_ID]) + ',%' FOR XML PATH('')), 1, 1, '') AS ImpactIntakeID)

Answer 2

使用Table-Valued User-Defined Functio n将逗号分隔的字符串@ProjectID转换为表格中的记录。然后在Where子句

中使用此表

WHERE [CNSDR_PROJ_ID] in (SELECT projID from @ResultTable)

表变量@ResultTable包含int类型的projID列中的项目ID，它使用链接中给出的userdefined函数填充。

SQL选择查询 - 转换错误

2 个答案: