DB2存储过程实现查询表数据，生成动态SQL，并执行

一、动态执行SQL

PREPARE S1 FROM 'delete from test';
EXECUTE S1;

二、使用游标

DECLARE V_CURSOR CURSOR FOR
SELECT DELETESQL,INSERTSQL FROM FJDC.V_I_DG_DM_ZY_WL_ZBHZ_ATTR T;

OPEN V_CURSOR;

FETCH V_CURSOR INTO V_DELETESQL,V_INSERTSQL;

CLOSE V_CURSOR;

三、WHILE循环　　

WHILE true DO
    表达式
END WHILE;

四、DB2查询表数据，生成动态SQL，并执行

 CREATE PROCEDURE "TEST"."TEST" ()
 BEGIN
         DECLARE V_DELETESQL VARCHAR(2000);
         DECLARE V_INSERTSQL VARCHAR(2000);
         DECLARE I_COUNT INT;

         --确定循环次数
         SELECT COUNT(INSERTSQL) INTO I_COUNT FROM FJDC.V_I_DG_DM_ZY_WL_ZBHZ_ATTR T;
         IF I_COUNT > 0 THEN
                 --游标
                 DECLARE V_CURSOR CURSOR FOR
                 SELECT DELETESQL,INSERTSQL FROM FJDC.V_I_DG_DM_ZY_WL_ZBHZ_ATTR T;

                 OPEN V_CURSOR;
                 WHILE I_COUNT > 0 DO
                         SET I_COUNT = I_COUNT-1;
                         FETCH V_CURSOR INTO V_DELETESQL,V_INSERTSQL;

                         --执行动态SQL
                         PREPARE S1 FROM V_DELETESQL;
                         EXECUTE S1;

                         PREPARE S1 FROM V_INSERTSQL;
                         EXECUTE S1;

                 END WHILE;
                 CLOSE V_CURSOR;

         END IF;
 END