SQL Server 2000 - Query a Table’s Foreign Key relationships

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暖寄归人
暖寄归人 2021-01-03 03:14

Nearly identical to Query a Table's Foreign Key relationships, but for SQL Server 2000

For a given table \'foo\', I need a query to generate a set of ta

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  • 2021-01-03 03:42

    Parents and children

    /* this will find out all of the foreign key references for a table*/
    
    DECLARE @tableName varchar(128)
    SET @tableName = 'tCounter'
    
    SELECT   
        pt.[name] AS 'parentTable',  
        ct.[name] AS 'childTable',  
        fk.[name] AS 'fkName', 
    *   
    FROM sys.foreign_keys fk        
        INNER JOIN sys.tables pt              
            ON pt.object_ID = fk.parent_object_id        
        INNER JOIN sys.tables ct              
            ON ct.object_ID = fk.referenced_object_id   
    WHERE pt.name = @tableName      
        OR ct.name = @tableName   
    ORDER BY pt.name, ct.name
    
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  • 2021-01-03 03:44
    SELECT o2.name
    FROM sysobjects o
    INNER JOIN sysforeignkeys fk on o.id = fk.rkeyid
    INNER JOIN sysobjects o2 on fk.fkeyid = o2.id
    WHERE o.name = 'foo'
    
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  • 2021-01-03 03:53

    Try this T-SQL:

    select col_name(fkeyid, fkey) as column_name, object_name(rkeyid) as referenced_table_name, col_name(rkeyid, rkey) as referenced_column_name from sysforeignkeys where object_name(fkeyid) = 'tableNameHere' order by constid
    

    I've rewritten the query slightly to give you all of the other tables that rely on a particular table:

    select object_name(fkeyid),
    col_name(fkeyid, fkey) as column_name,
    col_name(rkeyid, rkey) as referenced_column_name
    from sysforeignkeys
    where object_name(rkeyid) = 'tableNameHere'
    order by constid
    
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  • 2021-01-03 03:58

    Start here

        SELECT cons.TABLE_NAME
        , cons.CONSTRAINT_NAME PK_NAME
        , cols.COLUMN_NAME 
    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS cons
    LEFT join INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE cols
    ON cons.CONSTRAINT_NAME = cols.CONSTRAINT_NAME
    WHERE cons.CONSTRAINT_TYPE = 'foreign KEY'
    ORDER BY cons.TABLE_NAME
        , cons.CONSTRAINT_NAME
        , cols.COLUMN_NAME
    

    [edit] formatting is all messed up

    [edit2] no longer

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