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Sql server 通过分组从多个表创建Sql Server视图,选择子查询作为别名_Sql Server_View_Group By_Subquery_Multiple Tables - Fatal编程技术网

Sql server 通过分组从多个表创建Sql Server视图,选择子查询作为别名

Sql server 通过分组从多个表创建Sql Server视图,选择子查询作为别名,sql-server,view,group-by,subquery,multiple-tables,Sql Server,View,Group By,Subquery,Multiple Tables,在此基础上: 如何添加子查询 我只想在该视图中添加一个别名,该别名来自SELECT as别名,如: ... AS table2column2, (SELECT column1 FROM dbo.table3 WHERE constant = 1) AS table3column1, ... 是的,我到处找过了。互联有nada 提前谢谢 基本正确,只需添加一个前1,因为您不能返回多个值: (SELECT top 1 column1 FROM dbo.table3 WHERE constant =

在此基础上:

如何添加子查询

我只想在该视图中添加一个别名,该别名来自SELECT as别名,如:

... AS table2column2, (SELECT column1 FROM dbo.table3 WHERE constant = 1) AS table3column1, ... 是的,我到处找过了。互联有nada


提前谢谢

基本正确,只需添加一个前1,因为您不能返回多个值:

(SELECT top 1 column1 FROM dbo.table3 WHERE constant = 1)