Sql server 2005 从数据库中的不同表获取信息

我有两张桌子：

       User
---------------------
id        primary key 
name      varchar 
mobile    varchar

样本数据：

（1，airtel，'98874562169852659888523695874'）

样本数据：

（1，John Doe，9887456321）

我想根据移动字段值从第一个表中搜索客户机名称

---

如果移动字段有值

（98874562169853269888523695874）

，那么我如何知道特定移动电话号码属于哪个客户端名称？

在您的

客户端

表和另一个表之间必须有一个匹配列。从你的描述中不清楚那列是什么。根据您所说的，我相信您的模式如下所示：

Create Table MobileNumbers
(
    Id ... not null Primary Key
    , Name varchar(??) not null
    , Mobile varchar(??) not null
)

Create Table Client
(
    Id ... not null Primary Key
    , ClientName varchar(??) not null
    , MobileNo varchar(??) not null
)

假设Client.Mobile与MobileNumbers.Name匹配，我们有：

Select ...
From Client
    Join MobileNumbers
        On MobileNumbers.MobileNo = Client.Mobile
Where Client.Mobile In('9887456321','6985326598','88523695874')

在这个结构中，我假设每个移动值都包含一个数字，而不是逗号分隔的数字列表。如果实际情况是单个单元格可以包含多个值（请编辑您的原始帖子），那么正如Martin Smith所提到的，您需要规范化数据

编辑

考虑到OP的修订版，根本问题是在一列中有多个值。正确的解决方案是将手机号码标准化为第二个表：

Create Table UserMobileNumber
(
    UserId ... not null References User ( Id )
    , Carrier varchar(??) not null
    , Mobile varchar(??) not null
    , Constraint UC_UserMobileNumber Unique ( Mobile )
)

那么解决方案就变得微不足道了：

Select ...
From User
    Join UserMobileNumber
        On UserMobileNumber.UserId = User.Id
Where UserMobileNumber.Mobile In('9887456321','6985326598','88523695874')

但是，在此期间，您需要的是一个拆分函数：

Create Function dbo.udf_Split
(   
    @DelimitedList nvarchar(max)
    , @Delimiter nvarchar(2) = ','
)
Returns Table
As
Return
    (
    With CorrectedList As
        (
        Select Case When Left(@DelimitedList, Len(@Delimiter)) <> @Delimiter Then @Delimiter Else '' End
            + @DelimitedList
            + Case When Right(@DelimitedList, Len(@Delimiter)) <> @Delimiter Then @Delimiter Else '' End
            As List
            , Len(@Delimiter) As DelimiterLen
        )
        , Numbers As 
        (
        Select TOP (Len(@DelimitedList) + 2) Row_Number() Over ( Order By c1.object_id ) As Value
        From sys.columns As c1
            Cross Join sys.columns As c2
        )
    Select CharIndex(@Delimiter, CL.list, N.Value) + CL.DelimiterLen As Position
        , Substring (
                    CL.List
                    , CharIndex(@Delimiter, CL.list, N.Value) + CL.DelimiterLen     
                    , CharIndex(@Delimiter, CL.list, N.Value + 1)                           
                        - ( CharIndex(@Delimiter, CL.list, N.Value) + CL.DelimiterLen ) 
                    ) As Value
    From CorrectedList As CL
        Cross Join Numbers As N
    Where N.Value < Len(CL.List)
        And Substring(CL.List, N.Value, CL.DelimiterLen) = @Delimiter
    )

---

单个移动值可以包含三个逗号分隔的不同数字，还是有三行有三个数字？谢谢George。编辑之后，事情看起来更清楚了@进行一些重组显然是顺理成章的。用户、客户端和手机之间的关系是什么？一个客户端是否只有一个手机？如果是这样，是否意味着用户表中始终只有一条对应的记录？

Create Function dbo.udf_Split
(   
    @DelimitedList nvarchar(max)
    , @Delimiter nvarchar(2) = ','
)
Returns Table
As
Return
    (
    With CorrectedList As
        (
        Select Case When Left(@DelimitedList, Len(@Delimiter)) <> @Delimiter Then @Delimiter Else '' End
            + @DelimitedList
            + Case When Right(@DelimitedList, Len(@Delimiter)) <> @Delimiter Then @Delimiter Else '' End
            As List
            , Len(@Delimiter) As DelimiterLen
        )
        , Numbers As 
        (
        Select TOP (Len(@DelimitedList) + 2) Row_Number() Over ( Order By c1.object_id ) As Value
        From sys.columns As c1
            Cross Join sys.columns As c2
        )
    Select CharIndex(@Delimiter, CL.list, N.Value) + CL.DelimiterLen As Position
        , Substring (
                    CL.List
                    , CharIndex(@Delimiter, CL.list, N.Value) + CL.DelimiterLen     
                    , CharIndex(@Delimiter, CL.list, N.Value + 1)                           
                        - ( CharIndex(@Delimiter, CL.list, N.Value) + CL.DelimiterLen ) 
                    ) As Value
    From CorrectedList As CL
        Cross Join Numbers As N
    Where N.Value < Len(CL.List)
        And Substring(CL.List, N.Value, CL.DelimiterLen) = @Delimiter
    )

Select ...
From User
    Outer Apply dbo.Split( User.Mobile ) As M
    Join Client
        On Client.MobileNo = M.Value
Where M.Value In('9887456321','6985326598','88523695874')