[英]Is there a view in SQL Server that lists just primary keys?
我正在使用SQL Server並嘗試做一些“反思”,如果你願意的話。 我找到了系統視圖sys.identity_columns
,它包含了我所有表的所有標識列。
但是,我需要能夠選擇有關非標識列的主鍵的信息。 是否有包含所有主鍵和主鍵的數據的視圖? 如果沒有,我怎么能得到這些數據?
這適用於SQL Server 2005及更高版本:
select OBJECT_SCHEMA_NAME(i.object_id), OBJECT_NAME(i.object_id), i.name
from sys.indexes i
where i.is_primary_key = 1
order by 1, 2, 3
SELECT name FROM sys.key_constraints WHERE type = 'PK';
SELECT name FROM sys.key_constraints WHERE type = 'UQ';
我意識到這個問題已被標記為已回答,但是對於某些人來說,如果將sys.index_columns
(除了sys.indexes
)合並到您的查詢中以便將實際主鍵索引與表的列。 例:
select
t.Name as tableName
,c.name as columnName
,case when pk.is_primary_key is not null then 1 else 0 end as isPrimaryKeyColumn
from sys.tables t
inner join sys.columns c on t.object_id = c.object_id
left join sys.index_columns pkCols
on t.object_id = pkCols.object_id
and c.column_id = pkCols.column_id
left join sys.indexes pk
on pkCols.object_id = pk.object_id
and pk.is_primary_key = 1
where
t.name = 'MyTable'
嘗試這個...
SELECT KC.TABLE_NAME, KC.COLUMN_NAME, KC.CONSTRAINT_NAME
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE KC
WHERE OBJECTPROPERTY(OBJECT_ID(KC.CONSTRAINT_NAME), 'IsPrimaryKey') = 1
AND COLUMNPROPERTY(object_id(TABLE_NAME), COLUMN_NAME, 'IsIdentity') = 0
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