是怎么回事?
我在一个窗口中输入如下脚本:
string ls_mon
string filterstr2
int nian_1,yue_1
date cx_StatMon
/* 判断用户输入的月份是否合法 */
ls_mon = string(em_1.text)+"-01"
nian_1 = integer(string(left(em_1.text,4)))
yue_1 = integer(string(right(em_1.text,2)))
//
filterstr2="nian="+nian_1+" and "+"yue="+yue_1
//
dw_1.settransobject(sqlca)
dw_1.retrieve()
dw_1.setfilter(filterstr2)
dw_1.filter()
保存时出现如下错误:
incompatible types in expression:string integer
怎么回事?哪里错了?