约束有关问题
日期：2014-05-17 浏览次数：20472 次
约束问题？
SELECT
t.name AS table_name,
o.name AS constraint_name,
o.type_desc AS type_desc,
--OBJECT_DEFINITION(o.object_id),
c.name AS column_name
-- ty.name AS type_name
FROM sys.tables AS t
JOIN sys.columns AS c
ON t.object_id=c.object_id
-- JOIN sys.types AS ty
--ON c.system_type_id=ty.system_type_id
JOIN sys.objects AS o
ON t.object_id=o.parent_object_id
AND o.type_desc LIKE '%_CONSTRAINT'
ORDER BY table_name
这个查到的主键约束显示所有键都是，有没有跟好的语句？
------解决方案--------------------
SELECT
t.name AS table_name,
o.name AS constraint_name,
o.type_desc AS type_desc,
--OBJECT_DEFINITION(o.object_id),
c.name AS column_name
-- ty.name AS type_name
FROM sys.tables AS t
JOIN sys.columns AS c
ON t.object_id=c.object_id
-- JOIN sys.types AS ty
--ON c.system_type_id=ty.system_type_id
JOIN sys.objects AS o
ON t.object_id=o.parent_object_id
AND o.type_desc LIKE '%_CONSTRAINT'
ORDER BY table_name
这个查到的主键约束显示所有键都是，有没有跟好的语句？
------解决方案--------------------
- SQL code
SELECT OBJECT_NAME(parent_obj) tname ,
a.name AS indexname,b.name as columnname
FROM sys.sysobjects a inner join sys.syscolumns b on a.parent_obj=b.id
WHERE a.xtype IN ( 'pk', 'uq' )
AND OBJECT_NAME(parent_obj) = '表名' and b.name='列名'
------解决方案--------------------
- SQL code
SELECT OBJECT_NAME(parent_obj) tname ,
a.name AS indexname ,
b.name AS columnname
FROM sys.sysobjects a
INNER JOIN sys.syscolumns b ON a.parent_obj = b.id
WHERE a.xtype IN ( 'pk', 'uq' )
AND OBJECT_NAME(parent_obj) IN ( SELECT DISTINCT
name
FROM sys.tables )--and b.name='列名'
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