过程中执行execute immediate问题
......
sqlstring varchar2(500);
.....
aa := 'ab';
sqlstring := 'aatime = "'||aa||'"';
sqlstring := 'update trade_inf set'||sqlstring||'where id = "'||aaId||'"';
exeute immediate sqlstring;
commit;
--sqlstring的结果为'update trade_inf set aatime ="ab" where id ="001" '
--字段aatime,id均为char型
执行后有错误