oracle语句
select * from ZX_ZHONGGRMYXFCGSZX_GRXXJCB where SFZH = '452122199106224513' and XM = 'MMM'
and ZTM = 9 and (to_char(JZSJ,'yyyy-MM-dd') >= '2015-03-27' or JZSJ IS NULL)
------解决思路----------------------
select * from ZX_ZHONGGRMYXFCGSZX_GRXXJCB where SFZH = '452122199106224513' and XM = 'MMM'
and ZTM = 9 and (CONVERT(VARCHAR(10),JZSJ,120) >= '2015-03-27' or JZSJ IS NULL)