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查一个表的所有外键

select

a.name as 约束名,

object_name(b.parent_object_id) as 外键表,

d.name as 外键列,

object_name(b.referenced_object_id) as 主健表,

c.name as 主键列

from sys.foreign_keys A

inner join sys.foreign_key_columns B on A.object_id=b.constraint_object_id

inner join sys.columns C on B.parent_object_id=C.object_id and B.parent_column_id=C.column_id 

inner join sys.columns D on B.referenced_object_id=d.object_id and B.referenced_column_id=D.column_id 

where object_name(B.referenced_object_id)='表名';

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