将nvarchar值转换为数据类型整型时出现Conversion failed如何解决？

Question

我在 SQL Server 2014 上使用动态查询；当我运行查询时出现此错误：

Conversion failed when converting the nvarchar value '24VAC/DC' to data type int.

执行此动态时出现错误SQL

EXEC (@SQL)

请问如何解决这个错误？

数据样本

IF OBJECT_ID('dbo.TAllfeatures') IS NOT NULL
    DROP TABLE dbo.TAllfeatures

IF OBJECT_ID('dbo.TCondition') IS NOT NULL
    DROP TABLE dbo.TCondition

IF OBJECT_ID('dbo.TPartAttributes') IS NOT NULL
    DROP TABLE dbo.TPartAttributes

IF OBJECT_ID('dbo.TAllData') IS NOT NULL
    DROP TABLE dbo.TAllData
    
CREATE TABLE [dbo].[TAllfeatures]
(
     [ZPLID] [int] NULL,
     [ZfeatureKey] [bigint] NULL,
     [FeatType] [int] NULL,
     [AcceptedValueID] [int] NULL,
     [IsNumericValues] [int] NULL
) ON [PRIMARY]
GO

INSERT INTO [dbo].[TAllfeatures] ([ZPLID], [ZfeatureKey], [FeatType], [AcceptedValueID], [IsNumericValues]) 
VALUES (75533, NULL, 0, 0, 0)
INSERT INTO [dbo].[TAllfeatures] ([ZPLID], [ZfeatureKey], [FeatType], [AcceptedValueID], [IsNumericValues]) 
VALUES (75533, 1505730001, 2044, 155, 0)
INSERT INTO [dbo].[TAllfeatures] ([ZPLID], [ZfeatureKey], [FeatType], [AcceptedValueID], [IsNumericValues]) 
VALUES (75533, 1505730011, 2044, 274, 1)

INSERT INTO [dbo].[TAllfeatures] ([ZPLID], [ZfeatureKey], [FeatType], [AcceptedValueID], [IsNumericValues]) 
VALUES (75533, 1505730036, 2044, 271, 0)
    
CREATE TABLE [dbo].[TCondition]
(
     [TradeCodeControlID] [int]  NOT NULL,
     [VersionYear] [int] NULL,
     [Version] [float] NULL,
     [CodeTypeID] [int] NULL,
     [RevisionID] [bigint] NULL,
     [Code] [varchar](20) NULL,
     [ZPLID] [int] NULL,
     [ZfeatureKey] [bigint] NULL,
     [ZfeatureType] [nvarchar](200) NULL,
     [EStrat] [nvarchar](2500) NULL,
     [EEnd] [nvarchar](2500) NULL
) ON [PRIMARY]
    
INSERT INTO [dbo].[TCondition] ([TradeCodeControlID], [VersionYear], [Version], [CodeTypeID], [RevisionID], [Code], [ZPLID], [ZfeatureKey], [ZfeatureType], [EStrat], [EEnd]) 
VALUES (8123, 2020, 26, 849774, 307683692, N'8535400000', 75533, 1505730001, NULL, N'In(''Surge Protector'',''Surge Protector for Media Lines Only'',''Outlet Strip, Surge Protector'',''PDU, Surge Protector'',''Surge Lightning Arrester'',''Surge Arrester'',''Surge Protection Module'',''Lightning Arrester'',''Lightning Current Arrester'',''Protection Device'',''Surge Voltage Equipment'',''Isolated'',''Surge Protection'',''Coaxial'',''Base Element'')', N'')

INSERT INTO [dbo].[TCondition] ([TradeCodeControlID], [VersionYear], [Version], [CodeTypeID], [RevisionID], [Code], [ZPLID], [ZfeatureKey], [ZfeatureType], [EStrat], [EEnd]) 
VALUES (8124, 2020, 26, 849774, 307683692, N'8535400000', 75533, 1505730036, NULL, N'>1000', N'')
    
CREATE TABLE [dbo].[TPartAttributes]
(
     [PartID] [int] NOT NULL,
     [ZfeatureKey] [bigint] NULL,
     [AcceptedValuesOption_Value] [float] NULL,
     [Name] [nvarchar](500) NOT NULL
) ON [PRIMARY]
GO

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (1128078, 1505730036, 24, N'24VAC/DC')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (1128078, 1505730001, NULL, N'Surge Voltage Equipment')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (1128089, 1505730036, 5, N'5V')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (1128089, 1505730001, NULL, N'Attachment Plug')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (27912821, 1505730001, NULL, N'Surge Protection Module')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (27912821, 1505730036, 480, N'480V')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (32817870, 1505730001, NULL, N'Surge Protector')

INSERT INTO [dbo].[TPartAttributes] ([PartID], [ZfeatureKey], [AcceptedValuesOption_Value], [Name]) 
VALUES (32817870, 1505730036, NULL, N'120V, 240V')
    
CREATE TABLE dbo.TAllData
(
         PartID INT,    
         Code VARCHAR(20),    
         CodeTypeID INT,    
         RevisionID BIGINT,    
         ZPLID INT,    
         ConCount INT
)

SET ANSI_PADDING ON
SET ANSI_WARNINGS ON
            
DECLARE @ConStr nvarchar(max) = STUFF((SELECT CONCAT(' Or (PM.ZfeatureKey= ', CC.ZfeatureKey , IIF(CC.ZfeatureType='Qualifications',' And AcceptedValuesOption_Value ' , ' And Name ' ) , CAST(EStrat AS NVARCHAR(2500)),')')   --ValueName
                 FROM dbo.TCondition CC  INNER JOIN dbo.TAllfeatures AL with(nolock) ON AL.ZfeatureKey = CC.ZfeatureKey AND AL.IsNumericValues =0
                 FOR XML PATH(''), TYPE).value('(./text())[1]','varchar(max)'),1,3,'')
                
    
                    
                    
    
                    
                 DECLARE @Sql nvarchar(max)= CONCAT('INSERT INTO dbo.TAllData(PartID,Code,CodeTypeID,RevisionID,ZPLID ,ConCount)',' SELECT  PartID,Code,Co.CodeTypeID,Co.RevisionID,Co.ZPLID,Count(1) as ConCount
                    
                 FROM 
                 dbo.TPartAttributes PM with(nolock) 
                 INNER JOIN    dbo.TCondition Co with(nolock) ON Co.ZfeatureKey = PM.ZfeatureKey ',                
                 'Where (1=1 and  ' ,  @ConStr,' ) Group By PartID,Code,Co.CodeTypeID,Co.RevisionID,Co.ZPLID ' ,
                 ' Having Count(1)>= ',(SELECT COUNT(1) FROM TCondition with(nolock)))
    
            
            --print @SQL
             EXEC (@SQL)

我尝试解决问题，但问题仍然存在

DECLARE @ConStr nvarchar(max)=  STUFF((SELECT CONCAT(' Or (PM.ZfeatureKey= ''', CC.ZfeatureKey , '''', IIF(CC.ZfeatureType='Qualifications',' And AcceptedValuesOption_Value ' , ' And Name ' ) , LEFT(EStrat, 1), '''', SUBSTRING(EStrat, 2, LEN(EStrat) -1), ''')')   --ValueName
                       FROM dbo.TCondition  CC INNER JOIN dbo.TAllfeatures AL ON AL.ZfeatureKey = CC.ZfeatureKey AND AL.IsNumericValues =0
                       FOR XML PATH(''), TYPE).value('(./text())[1]','varchar(max)'),1,3,'')

Answer 1

看来您根本不需要动态 SQL。

由于缺少样本数据和预期输出，很难知道您试图实现什么逻辑，并且您现有的查询可以使用更好的格式。不过看起来是某种关系划分。

Note that you should not use WITH (NOLOCK) unless you really know what you are doing. It can give wildly incorrect results.

I also strongly suggest you use table references on each column, especially within subqueries

INSERT INTO dbo.TAllData
    (PartID, Code, CodeTypeID, RevisionID, ZPLID, ConCount)
SELECT
  PartID,
  Code,
  Co.CodeTypeID,
  Co.RevisionID,
  Co.ZPLID,
  Count(1) as ConCount
FROM dbo.TPartAttributes PM
INNER JOIN dbo.TCondition Co ON Co.ZfeatureKey = PM.ZfeatureKey
Where EXISTS (SELECT 1
    FROM dbo.TAllfeatures AL
    WHERE AL.ZfeatureKey = Co.ZfeatureKey
      AND AL.IsNumericValues = 0
      AND IIF(Co.ZfeatureType = 'Qualifications', AcceptedValuesOption_Value, Name) = EStrat
)
Group By
  PartID,
  Code,
  Co.CodeTypeID,
  Co.RevisionID,
  Co.ZPLID
Having Count(1) >= (SELECT COUNT(1) FROM TCondition);

将nvarchar值转换为数据类型整型时出现Conversion failed如何解决？

How to solve error Conversion failed when converting the nvarchar value to data type integer?

sql

sql-server

stored-procedures

dynamic-sql

sql-server-2014