Question

如果表中的特定列具有统计信息，我想检查Transact SQL，如果是，则要检查所有内容。

Answer 1

此查询应该这样做我在存储过程中使用它来浏览数据库以查找统计数据适用于SQL Server 2005以及可能的旧版本。

SELECT S.NAME
FROM   SYS.OBJECTS AS O
       INNER JOIN SYS.STATS AS S
         ON O.OBJECT_ID = S.OBJECT_ID
       INNER JOIN SYS.STATS_COLUMNS AS SC
         ON SC.OBJECT_ID = S.OBJECT_ID
            AND S.STATS_ID = SC.STATS_ID
WHERE  (O.OBJECT_ID = OBJECT_ID('MyTable','local'))
       AND (O.TYPE IN ('U'))
       AND (INDEXPROPERTY(S.OBJECT_ID,S.NAME,'IsStatistics') = 1)  /* only stats */
       AND (COL_NAME(SC.OBJECT_ID,SC.COLUMN_ID) = 'MyColumn')

如何获取列上存在的统计信息（如果有）？

1 个答案: