查詢出使用者自建表約束 （回帖內容）

select object_name(object_id) as nameofconstraint, 

schema_name(schema_id) as schemaname, 
object_name(parent_object_id) as tablename, 
type_desc as constrainttype 
from sys.objects 
where type_desc like '%constraint' 
查詢出使用者自建表約束

主鍵約束

select
tab.name as [表名],
idx.name as [主鍵名稱],
col.name as [主鍵列名]
from
sys.indexes idx
join sys.index_columns idxcol 
on (idx.object_id = idxcol.object_id 
and idx.index_id = idxcol.index_id 
and idx.is_primary_key = 1)
join sys.tables tab
on (idx.object_id = tab.object_id)
join sys.columns col
on (idx.object_id = col.object_id
and idxcol.column_id = col.column_id);
唯一約束
select
tab.name as [表名],
idx.name as [約束名稱],
col.name as [約束列名]
from
sys.indexes idx
join sys.index_columns idxcol 
on (idx.object_id = idxcol.object_id 
and idx.index_id = idxcol.index_id 
and idx.is_unique_constraint = 1)
join sys.tables tab
on (idx.object_id = tab.object_id)
join sys.columns col
on (idx.object_id = col.object_id
and idxcol.column_id = col.column_id);
外來鍵約束
select 
osub.name  as  [子表名稱],
fk.name as  [外來鍵名稱],
subcol.name as [子表列名],
omain.name  as  [主表名稱],
maincol.name as [主表列名]
from 
sys.foreign_keys fk  
join sys.all_objects osub  
on (fk.parent_object_id = osub.object_id)
join sys.all_objects omain 
on (fk.referenced_object_id = omain.object_id)
join sys.foreign_key_columns fkcols 
on (fk.object_id = fkcols.constraint_object_id)
join sys.columns subcol 
on (osub.object_id = subcol.object_id  
and fkcols.parent_column_id = subcol.column_id)
join sys.columns maincol 
on (omain.object_id = maincol.object_id  
and fkcols.referenced_column_id = maincol.column_id)
check約束
select
tab.name as [表名],
chk.name as [check約束名],
col.name as [列名],
chk.definition
from
sys.check_constraints chk
join sys.tables tab
on (chk.parent_object_id = tab.object_id)
join sys.columns col
on (chk.parent_object_id = col.object_id
and chk.parent_column_id = col.column_id)

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