pb动态SQL如何没有返回值,请大家帮忙看下,_PB

pb动态SQL怎么没有返回值,请大家帮忙看下,急!
string name,ls_sql,code
dec ld_value
code= "1"

ls_sql= "select sum(a.value) from ttt a"

DECLARE c1 DYNAMIC CURSOR FOR SQLSA;

PREPARE SQLSA FROM :ls_sql;

OPEN DYNAMIC c1 USING :code;

FETCH c1 INTO :ld_value;

If SQLCA.SQLCode=0 then //如果成功取出记录
messagebox('',string(ld_value))
end if

CLOSE c1;

怎么执行后没有返回值,请大家帮忙看看!!!

------解决方案--------------------
怎么发重复贴？

你先检查
select sum(a.value) from ttt a 有没有结果集.
------解决方案--------------------

SQL code

string ls_sql  dec ld_value  ls_sql= "select sum(a.value) from ttt a"  DECLARE c1 DYNAMIC CURSOR FOR SQLSA;  PREPARE SQLSA FROM :ls_sql;  FETCH c1 INTO :ld_value;  If SQLCA.SQLCode=0 then //如果成功取出记录    messagebox('',string(ld_value))end if  CLOSE c1;
------解决方案--------------------
C/C++ code将表base中的code字段中间两位为”01”的所有记录读取出来并分别进行相应处理。STRING lsSQL,lsCode,lsName,lsFilterLsFilter=”01”LsSQL=”SELECT code，name FROM base WHERE substring(code，3，2)=?”DECLARE cursor_base DYNAMIC CURSOR FOR SQLSA；PREPARE SQLSA FROM：lsSQL；OPEN DYNAMIC cursor_base USING:lsFilter;FETCH cursor_base INTO:lsCode,:lsName;DO WHILE SQLCA.SQLCODE=0．　∥对满足条件的记录根据要求分别进行处理．　FETCH cursor_base INTO:lsCode,:lsName;LOOPCLOSE cursor_base;