Question

如何在数据库中查询所有类型的约束，例如主键，外键，唯一键和默认约束，并将其系统生成名称重命名为以下格式的名称：

PK_ColumnName1_ColumnName2
FK_ColumnName1
UK_ColumnName1_ColumnName2
DF_ColumnName1

Answer 1

SELECT tbl.name TableName, col.name ColName, ck.name ConstraintName, ck.definition ConstraintDefinition  ,' exec sp_rename [' +ck.name + '] , [DF_' + col.name + ']' SqlQuery 
FROM sys.default_constraints ck 
INNER JOIN sys.tables tbl 
on ck.parent_object_id = tbl.object_id
INNER JOIN sys.columns col 
on tbl.object_id = col.object_id 
and ck.parent_column_id = col.column_id

这是默认约束

使用sys.key_constraints ans sys.foreign_keys

Answer 2

以下代码更加详细，它也特定于默认约束。

select      quotename(s.name) + '.' + quotename(o.name) as table_name,
        dc.name as default_name,
        'DF_' + o.name + '_' + c.name as new_default_name,
        'execute sp_rename ''' + quotename(s.name) + '.' + dc.name + ''', ''' + 'DF_' + o.name + '_' + c.name + ''' , ''OBJECT'' -- ' + s.name + '.' + o.name + '' as rename_script
from        sys.default_constraints as dc
join        sys.objects as o
    join        sys.schemas as s
    on          o.schema_id = s.schema_id
on          o.object_id = dc.parent_object_id
join        sys.columns as c
on          o.object_id = c.object_id
and         c.column_id = dc.parent_column_id
where       dc.name like 'DF[_][_]%[_][_]%[_][_]%' -- DF__AlertType__Creat__10F7245D
and         o.type = 'u'
and         o.is_ms_shipped = 0
order by    s.name,
            o.name

使用用户定义的名称重命名所有约束名称

2 个答案: