Question

我创建了一个触发器，可以在更新后将对象（笔记本电脑，PC，打印机......）的状态更改为预订。

脚本在动态sql中（环境是SQL Server 2008 R2）：

DECLARE @CMDB_ID int, @variable varchar(128), @CI_TYPE_ID int, @STATUS varchar(128),
        @mrSTATUS varchar(128), @stock_status varchar(128), @SERIAL_NUMBER varchar(128)

SET @CMDB_ID = 2
SET @stock_status = 'En stock'
SET @mrSTATUS = 'APPROUVEE'
SET @STATUS ='RESERVE'

Declare @sql nvarchar(max), @CRLF varchar(2)

SET @CRLF = CHAR(13) + CHAR(10);

SET @SQL = N'Create trigger [dbo].[CHANGEMENT_ETAT_CI_EN RESERVATION]' + @CRLF
SET @SQL = @SQL + N'ON [dbo].[MASTER4]'+ @CRLF
SET @SQL = @SQL + N'AFTER UPDATE'+ @CRLF
SET @SQL = @SQL + N'AS' + @CRLF
SET @SQL = @SQL + N'if UPDATE(RECHERCHE__bNOUVEAU__bSERIAL__bNUMBER)' + @CRLF
SET @SQL = @SQL + N'BEGIN' + @CRLF
SET @SQL = @SQL + N'SET NOCOUNT ON;' + @CRLF
SET @SQL = @SQL + N'  ' + @CRLF

SET @SQL = @SQL + N' DECLARE @CMDB_ID int,@variable varchar(128), @CI_TYPE_ID int, @STATUS varchar(128),@mrSTATUS varchar(128), @stock_status varchar(128), @SERIAL_NUMBER varchar(128)' + @CRLF

SET @SQL = @SQL + N'SET @CMDB_ID =' + CAST(@CMDB_ID as varchar(8))+ @CRLF
SET @SQL = @SQL + N'SET @status = ''' + CAST(@STATUS as varchar(128))+ '''' + @CRLF
SET @SQL = @SQL + N'SET @STOCK_STATUS = ''' + CAST(@STOCK_STATUS as varchar(128))+ '''' + @CRLF
SET @SQL = @SQL + N'SET @mrstatus = ''' + CAST(@mrstatus as varchar(128))+ '''' + @CRLF
SET @sql = @sql + N'  ' + @CRLF
SET @SQL = @SQL + N'DECLARE c1 cursor for' + @CRLF
SET @SQL = @SQL + N'SELECT RECHERCHE__bNOUVEAU__bSERIAL__bNUMBER'+ @CRLF
SET @SQL = @SQL + N'FROM inserted'+ @CRLF
SET @SQL = @SQL + N'WHERE mrSTATUS = @mrSTATUS'+ @CRLF
SET @SQL = @SQL + N'open c1'+ @CRLF
SET @SQL = @SQL + N'FETCH NEXT FROM c1 INTO @SERIAL_NUMBER'+ @CRLF
SET @SQL = @SQL + N'SET @variable =' + '(SELECT Num__UGLJ_ro__bde__bs__UGLJ_rie FROM [dbo].[CI&IN&STOCK] WHERE Num__UGLJ_ro__bde__bs__UGLJ_rie= @SERIAL_NUMBER)'+ @CRLF
SET @SQL = @SQL + N'SET @CI_TYPE_ID =' + '(SELECT [dbo].[CI&IN&STOCK].CI_TYPE_ID FROM [dbo].[CI&IN&STOCK] WHERE Num__UGLJ_ro__bde__bs__UGLJ_rie= @SERIAL_NUMBER)'+ @CRLF

SET @SQL = @SQL + N'WHILE @@FETCH_STATUS = 0'+ @CRLF
SET @SQL = @SQL + N'BEGIN'+ @CRLF
SET @SQL = @SQL + N'Declare @sql nvarchar(max), @CRLF varchar(2)'+ @CRLF
SET @SQL = @SQL + N'SET @sql=''''' + @CRLF
SET @SQL = @SQL + N'SET @CRLF = CHAR(13) + CHAR(10)' + @CRLF

SET @SQL = @SQL + N'SET @sql= @sql + N''update CMDB'' + CAST(@CMDB_ID as varchar(8)) + ''_CI_'' + CAST(@CI_TYPE_ID as varchar(8)) + @CRLF' + @CRLF

SET @SQL = @SQL + N'SET @sql= @sql + N''SET STATUS = '''''' + @STATUS + '''''''' + @CRLF' + @CRLF

SET @SQL = @SQL + N'SET @sql= @sql + N''WHERE Num__UGLJ_ro__bde__bs__UGLJ_rie ='' +  CAST(@variable as varchar(128)) + '' and STATUS = '''''' + @stock_status + '''''''' + @CRLF' +@CRLF

SET @SQL = @SQL + N'EXEC sp_executesql @sql'+ @CRLF    
SET @SQL = @SQL + N'fetch next from c1 into @SERIAL_NUMBER' + @CRLF
SET @SQL = @SQL + N'END'+ @CRLF
SET @SQL = @SQL + N'close c1'+ @CRLF
SET @SQL = @SQL + N'DEALLOCATE c1'+ @CRLF
SET @SQL = @SQL + N'END'+ @CRLF

EXEC sp_executesql @sql

当我触发此脚本时抛出MASTER4表的更新时，会出现以下错误：

消息207，级别16，状态1，行1 列名称无效：＆＃39; TRF3110WJS＆＃39;

即使价值＆＃39; TRF3110WJS＆＃39;不是列名，而是列值。

有任何支持的想法吗？

注意：如果我的表名是静态的而不是动态的，那么脚本效果很好。

Answer 1

问题出在Dynamic SQL中，它创建了更多动态的sql

SET @SQL = @SQL + N'SET @sql= @sql + N''WHERE Num__UGLJ_ro__bde__bs__UGLJ_rie ='' +  CAST(@variable as varchar(128)) + '' and STATUS = '''''' + @stock_status + '''''''' + @CRLF' +@CRLF

周围需要更多报价

CAST(@variable as varchar(128))

位。

我认为应该这样做

SET @SQL = @SQL + N'SET @sql= @sql + N''WHERE Num__UGLJ_ro__bde__bs__UGLJ_rie ='''''' +  CAST(@variable as varchar(128)) + '''''' and STATUS = '''''' + @stock_status + '''''''' + @CRLF' +@CRLF

消息207，级别16，状态1，Ligne 1无效列名称“TRF3110WJS”

1 个答案: