Question

最近开始学习SQL并遇到了这个我无法找到解决方案的问题。我正在尝试从多个数据库中收集数据并将其输出到单个表中。

源选择输出两列“acAcct”和“源db的名称”

的数据

目标表的每个数据库都有“acAcct”和列。

我提出的事情：

DECLARE @command varchar(1000)
SET  @command = 'IF ''[?]'' NOT IN (''[master]'', ''[model]'', ''[msdb]'', ''[tempdb]'')

 INSERT INTO _utility.dbo.konta (acAcct, ''?'')
 SELECT DISTINCT AC.acAcct
                ,AD.acName AS ''?''                 
                        from tHE_AcctTransItem as AC
                        LEFT JOIN vDE_SetAccount as AD 
                        ON AC.acAcct = AD.acAcct'

EXEC sp_MSforeachdb @command

我为每个数据库收到此错误：

Msg 102, Level 15, State 1, Line 3
Incorrect syntax near 'name of DB'.

我想我错过了解析变量的内容：

INSERT INTO _utility.dbo.konta (acAcct, ''?'')

选择正常。

编辑：

结束了这个：

DECLARE @command varchar(1000)
SET  @command = 'IF ''[?]'' NOT IN (''[master]'', ''[model]'', ''[msdb]'', ''[tempdb]'')

MERGE  _utility.dbo.konta AS target
 USING (SELECT DISTINCT AC.acAcct
                ,AD.acName AS [?]                   
                        from [?].dbo.tHE_AcctTransItem as AC
                        LEFT JOIN [?].dbo.vDE_SetAccount as AD 
                        ON AC.acAcct = AD.acAcct) as source
    ON (target.acAcct = source.acAcct)
        WHEN MATCHED THEN UPDATE SET target.[?] = source.[?]
        WHEN NOT MATCHED THEN
            INSERT (acAcct, [?])
            VALUES (source.acAcct, [?]);
            '
EXEC sp_MSforeachdb @command

原始脚本仅填充第一列，而在其他列中出错。

Answer 1

如果源数据库名称是列，则不应将其括在单引号中。方括号会更安全。

DECLARE @command varchar(1000)
SET  @command = 'IF ''[?]'' NOT IN (''[master]'', ''[model]'', ''[msdb]'', ''[tempdb]'')

 INSERT INTO _utility.dbo.konta (acAcct, [?])
 SELECT DISTINCT AC.acAcct
        ,AD.acName AS [?]                 
            from tHE_AcctTransItem as AC
            LEFT JOIN vDE_SetAccount as AD 
            ON AC.acAcct = AD.acAcct'

EXEC sp_MSforeachdb @command

TSQL从多个数据库中收集数据

1 个答案: