查询表中某个字段的约束名称
declare @name varchar(50)
select b.name from sysobjects b join syscolumns a on b.id = a.cdefault
where a.id = object_id('表')
and a.name ='列'结果示例
| name |
| DF__dus_cou__userp__257252FF |

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查询表中某个字段的约束名称
declare @name varchar(50)
select b.name from sysobjects b join syscolumns a on b.id = a.cdefault
where a.id = object_id('表')
and a.name ='列'| name |
| DF__dus_cou__userp__257252FF |

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