sybase数据库中索引导致sql语句执行不成功
SELECT DISTINCT A.CASEPROP AS PROP,'旧存' AS AJLX,0 AS AJLXXH,A.CASE_PROP AS PROPNO
,M1=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND
(PERMITDAY <'2008.12.26 00:00:00' AND (SHUTDAY IS NULL OR
SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2008.12.26 00:00:00') )) ,
M2=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP
AND (PERMITDAY <'2009.01.26 00:00:00' AND
(SHUTDAY IS NULL OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.01.26 00:00:00') )) ,
M3=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP
AND (PERMITDAY <'2009.02.26 00:00:00' AND (SHUTDAY IS NULL
OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.02.26 00:00:00') )) ,
M4=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND
(PERMITDAY <'2009.03.26 00:00:00' AND
(SHUTDAY IS NULL OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.03.26 00:00:00') )) ,
M5=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND
(PERMITDAY <'2009.04.26 00:00:00' AND
(SHUTDAY IS NULL OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.04.26 00:00:00') )) ,
M6=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND
(PERMITDAY <'2009.05.26 00:00:00' AND
(SHUTDAY IS NULL OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.05.26 00:00:00') )) ,
M7=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND
(PERMITDAY <'2009.06.26 00:00:00' AND (SHUTDAY IS NULL OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.06.26 00:00:00') )) ,M8=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND (PERMITDAY <'2009.07.26 00:00:00' AND (SHUTDAY IS NULL OR SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.07.26 00:00:00') )) ,M9=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASEPROP AND (PERMITDAY <'2009.08.26 00:00:00' AND (SHUTDAY IS NULL OR
SHUTDAY<'1900-01-01 00:00:00' OR SHUTDAY>='2009.08.26 00:00:00') )) ,M10=( SELECT COUNT(*) from CASES WHERE CASEPROP=A.CASE
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select datediff(month,'2009-11-02','2009-12-01')
不知道你要怎么个月差异
上面的命令结果也是1
但是其实按照常识差异不是一个月，是差一天一个月
这有段现成的代码可以帮助你算出常识上的差异
SQL code
declare @t table(a datetime,b datetime);
insert @t
select '2009-11-02','2009-12-01' UNION ......
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数据库在通过连接两张或多张表来返回记录时，都会生成一张中间的临时表，然后再将这张临时表返回给用户。
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