用用戶定義的名稱重命名所有約束名稱

Question

如何查詢數據庫中所有類型的約束，例如主鍵，外鍵，唯一鍵和默認約束，並將其系統生成名稱重命名爲以下格式的名稱：

• 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 

這是默認的約束

使用sys.key_constraints ANS sys.foreign_keys

Answer 2

下面的代碼是一個小更詳細，太具體的是默認的約束。

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