确定表的主键使用TSQL(Determine a table's primary key u

我想，以确定使用TSQL（存储过程或系统表为细）的表的主键。有没有在SQL Server（2005或2008），这样的机制？

Answer 1:

这应该让你开始：

SELECT *
    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc
        JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE ccu ON tc.CONSTRAINT_NAME = ccu.Constraint_name
    WHERE tc.TABLE_NAME = 'TableName' and tc.CONSTRAINT_TYPE = 'Primary Key'

Answer 2:

怎么样

sp_pkeys 'TableName'

Answer 3:

这是基于2005年的SQL系统表一（99％肯定它会在2008年的工作）。这将列出所有的PK为所有用户定义的表，所有的列和一些额外的绒毛，可以被删除。添加参数，同时挑选出一个表。

SELECT
   schema_name(ta.schema_id)  SchemaName
  ,ta.name  TableName
  ,ind.name
  ,indcol.key_ordinal Ord
  ,col.name  ColumnName
  ,ind.type_desc
  ,ind.fill_factor
 from sys.tables ta
  inner join sys.indexes ind
   on ind.object_id = ta.object_id
  inner join sys.index_columns indcol
   on indcol.object_id = ta.object_id
    and indcol.index_id = ind.index_id
  inner join sys.columns col
   on col.object_id = ta.object_id
    and col.column_id = indcol.column_id
 where ind.is_primary_key = 1
 order by
   ta.name
  ,indcol.key_ordinal

Answer 4:

SELECT ccu.COLUMN_NAME, ccu.CONSTRAINT_NAME
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS AS tc
    INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS ccu
        ON tc.CONSTRAINT_NAME = ccu.CONSTRAINT_NAME
WHERE tc.TABLE_CATALOG = 'Your_Catalog'    -- replace with your catalog
    AND tc.TABLE_SCHEMA = 'dbo'            -- replace with your schema
    AND tc.TABLE_NAME = 'Your_Table'       -- replace with your table name
    AND tc.CONSTRAINT_TYPE = 'PRIMARY KEY'

Answer 5:

EXEC sp_Pkeys @tableName

Answer 6:

exec [sys].[sp_primary_keys_rowset] @table_name= 'TableName'

Answer 7:

你最好不要使用INFORMATION_SCHEMA.KEY_COLUMN_USAGE，你可以访问密钥订购信息（ORDINAL_POSITION），这是了解非常重要。

SELECT kcu.*
  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu
  INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS tc
  ON tc.TABLE_NAME = kcu.TABLE_NAME
  AND tc.CONSTRAINT_NAME = kcu.CONSTRAINT_NAME
ORDER BY tc.TABLE_NAME
    ,tc.CONSTRAINT_NAME
    ,kcu.ORDINAL_POSITION

Answer 8:

最简单的方法是这样的！

select object_id from sys.objects 
where parent_object_id = OBJECT_ID(N'FACounty')
and [type] = N'PK'

Answer 9:

如果你已经知道你有兴趣，以下的作品关键的名称：

-- Assuming you have schema "Example" and the primary key name is "PK_Item"
-- Notice that name of table is irrelevant here but is "Foobar" here
IF (OBJECT_ID('Example.PK_ITEM') IS NULL)
BEGIN
    ALTER TABLE [Example].Foobar ADD CONSTRAINT
    PK_Item PRIMARY KEY ...
END

文章来源: Determine a table's primary key using TSQL