使用TSQL确定表的主键

Question

我想使用TSQL确定表的主键(存储过程或系统表很好).SQL Server(2005或2008)中是否存在这样的机制？

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

这是一个基于SQL 2005的系统表(99%肯定它在2008年工作).这将列出所有用户定义的表的所有PK,所有列和一些可以删除的额外的绒毛.添加参数以一次挑选一个表.

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