access 查询问题,急!!!!!!!!!!!!!!!!
在win2003 + access2003 环境下开发的程序(用powerbuilder开发的),把程序和mdb文件拷到win98环境下,出现以下情况:
select count(*) into :ll_count from A where id = :ll_id and xh= :ll_xh ;
查询结果:ll_count = 0
但 select count(*) into :ll_count from A where id = :ll_id;
查询结果:ll_count > 0
select count(*) into :ll_count from A where xh= :ll_xh ;
查询结果:ll_count > 0
问题:为什么两个条件合并以后,查询出来的记录数为零?(我在win2003 + access2003 环境下查过,两个条件合并以后,查询出来的记录数不为零),是不是win98访问access的问题?