逐级汇总查询实例(财务科目余额表)

--测试数据
DECLARE @a TABLE(No varchar(10),Name varchar(10))
INSERT @a SELECT '101'  ,'现金'
UNION ALL SELECT '102'  ,'银行存款'
UNION ALL SELECT '10201','工行'
UNION ALL SELECT '10202','建行'
UNION ALL SELECT '10203','农行'

DECLARE @b TABLE(No varchar(10),[Money] money )
INSERT @b SELECT '101'  ,100
UNION ALL SELECT '10201',20
UNION ALL SELECT '10202',120

--逐级汇总查询
SELECT a.No,a.Name,
    [Money]=ISNULL(SUM([Money]),0)
FROM @a a
    LEFT JOIN @b b ON b.No LIKE a.No+'%'
GROUP BY a.No,a.Name
ORDER BY a.No
/*--结果
No         Name        Money
---------------- ----------------- ---------------------
101        现金         100.0000
102        银行存款     140.0000
10201      工行         20.0000
10202      建行         120.0000
10203      农行         .0000
--*/