SQL 查询不存在

Question

我们有两个销售不同类型物品的系统。与 Sandbox2 中的帐户相比，我们希望显示在 Sandbox1 中只有帐户的客户。我使用了 WHERE NOT EXISTS，但我不确定它是否正常工作。当我尝试运行时出现错误：将 nvarchar 值 'MSTO15' 转换为数据类型 int 时转换失败。所以我不确定是什么原因造成的，或者我的查询是否在正确的轨道上。

如有任何帮助，我们将不胜感激。

SELECT [Account #], Accounts, [Prior Annual], [Prior Annual1], [Prior Annual2]
FROM Sandbox1.dbo.SalesHistory as s
WHERE NOT EXISTS
    (SELECT * 
     FROM Sandbox2.dbo.customer_master as m
     WHERE s.[Account #] = 
           m.customer_number)

Answer 1

试试这个：

SELECT [Account #], Accounts, [Prior Annual], [Prior Annual1], [Prior Annual2]
FROM Sandbox1.dbo.SalesHistory as s
where s.[Account #] not in (select [Account #] from Sandbox2.customer_master)

Answer 2

SELECT [Account #], Accounts, [Prior Annual], [Prior Annual1], [Prior Annual2]
FROM Sandbox1.dbo.SalesHistory as s
WHERE NOT EXISTS
    (SELECT * 
     FROM Sandbox2.dbo.customer_master as m
     WHERE convert(nvarchar,s.[Account #]) = 
           convert(nvarchar,m.customer_number))

SQL 查询不存在

SQL Query Not Exists

mysql

sql

sql-server

nested-queries