我的一个PLSQL【我】 循环嵌套、游标使用、变量定义、查询插入表、批量提交事务、字符串截取、动态sql拼接执行

代码块：

--CREATE OR REPLACE PROCEDURE PRO_REVENUE_STATISTICS

--IS
DECLARE
       --计数器
       ins_counter PLS_INTEGER := 0;
       --全部客户数量
       l_all_cust_num REVENUE_STATISTICS_RES.All_Cust_Num%TYPE;
       --全部收入
       l_all_income REVENUE_STATISTICS_RES.All_Income%TYPE;
       --当前账期月份字符串默认12个月
       l_month_str varchar2(200) := '';
       --当前账期月份数字
       l_month_num number(20) ;
       --当前全部收入查询条件
       l_month_select varchar2(10000) := '' ;
BEGIN
       --计算全部客户数
       SELECT sum(CUST_TOTAL) count into l_all_cust_num from provi_cust_total;
       --计算截止到当前账期的总收入
       --计算当前最大月份201909
       SELECT MAX(ACCOUNT_DAY) into l_month_str FROM ct_lan_node_inc;
       l_month_num := TO_NUMBER(SUBSTR(l_month_str,5));
       DBMS_OUTPUT.PUT_LINE('l_month_num:'||l_month_num);

        FOR moth_index IN 1 .. (l_month_num)
        LOOP
           l_month_select := l_month_select || 'SUM(TY_' || moth_index || ')+';
        END LOOP;
        --去掉最后一个加号
        l_month_select := substr(l_month_select,0,length(l_month_select)-1);
        --拼接查询
        l_month_select := 'SELECT /*+ PARALLEL(12) */(' || l_month_select ||') FROM EDA_CUST_INC';
        --DBMS_OUTPUT.PUT_LINE(l_month_select);
        --执行查询字符串
        EXECUTE IMMEDIATE l_month_select into l_all_income;
        --DBMS_OUTPUT.PUT_LINE(l_all_income);

       --获取省份游标
       FOR prov_rec IN (SELECT REGION_ID,CUST_TOTAL,REGION_NBR,REGION_NAME FROM PROVI_CUST_TOTAL p LEFT JOIN common_region c ON p.region_id = c.common_region_id)
       LOOP
           <<prov_loop>>
           --获取市游标
           FOR city_rec IN (SELECT COMMON_REGION_ID,REGION_NBR, REGION_NAME FROM COMMON_REGION WHERE PAR_REGION_ID = prov_rec.REGION_ID)
           LOOP
               --获取产品游标
               FOR product_rec IN (select NAME,CODE FROM PRODUCT_CAT)
               LOOP
                   --获取行业游标
                   FOR industry_rec  IN (  select INDUSTRY_TYPE_ID,
                                           PAR_INDUSTRY_TYPE_ID,
                                           INDUSTRY_TYPE_GRADE,
                                           INDUSTRY_TYPE_CODE,
                                           INDUSTRY_TYPE_NAME
                                      from industry_type)
                   LOOP
                       --获取身份证信息
                       FOR identity_index IN 1..2
                       LOOP
                          DECLARE
                              --定义单条查询结果游标
                              CURSOR revenues_cur IS
                                    SELECT
                                       COUNT(e.CUST_ID) AUDIT_CUST_NUM,COUNT(DISTINCT(e.PARTY_ID)) AUDIT_CUST_PARTY_NUM,
                                       SUM(TY_1) TY_1 ,SUM(TY_2) TY_2,SUM(TY_3) TY_3,SUM(TY_4) TY_4,SUM(TY_5) TY_5,SUM(TY_6) TY_6,SUM(TY_7) TY_7,SUM(TY_8) TY_8,SUM(TY_9) TY_9,SUM(TY_10) TY_10,SUM(TY_11) TY_11,SUM(TY_12) TY_12,
                                       SUM(LY_1) LY_1 ,SUM(LY_2) LY_2,SUM(LY_3) LY_3,SUM(LY_4) LY_4,SUM(LY_5) LY_5,SUM(LY_6) LY_6,SUM(LY_7) LY_7,SUM(LY_8) LY_8,SUM(LY_9) LY_9,SUM(LY_10) LY_10,SUM(LY_11) LY_11,SUM(LY_12) LY_12
                                    FROM EDA_CUST_INC e
                                    WHERE 1=1
                                     AND   e.STD_PRVNCE_CD = prov_rec.REGION_NBR
                                     AND   e.STD_LATN_CD =  city_rec.REGION_NBR
                                     AND   e.PROD_TYPE = product_rec.CODE
                                     AND   EXISTS (SELECT 1
                                                    FROM CUST_CP_MERGE M
                                                   WHERE e.CUST_ID = M.CUST_ID
                                                     AND e.STD_LATN_CD = M.STD_LATN_CD)
                                     AND e.PARTY_ID IS NOT NULL AND UPPER(e.PARTY_ID) != 'NULL'
                                     AND EXISTS (SELECT 1
                                          FROM PARTY P
                                         WHERE e.PARTY_ID = p.PARTY_ID
                                           AND p.IDENTITY_TYPE = identity_index)
                                     and exists (select 1
                                          from party_org po
                                         where e.party_id = po.party_id
                                              and po.INDUSTRY_TYPE_ID = industry_rec.INDUSTRY_TYPE_ID);
                              --定义单条查询结果变量
                              revenue_rec revenues_cur%ROWTYPE;
                          BEGIN
                               --打开游标
                               OPEN revenues_cur;
                               --给变量赋值
                               FETCH revenues_cur INTO revenue_rec;
                               --DBMS_OUTPUT.PUT_LINE(prov_rec.REGION_NAME||'-'||city_rec.REGION_NAME||'-'||product_rec.NAME||'AUDIT_CUST_NUM'||revenue_rec.AUDIT_CUST_NUM||'AUDIT_CUST_PARTY_NUM'||revenue_rec.AUDIT_CUST_PARTY_NUM);
                               --插入结果表
                               INSERT INTO REVENUE_STATISTICS_RES2
                                    (
                                     ID,
                                     PROVINCE_REGION_ID,
                                     CITY_REGION_ID,
                                     REGION_NAME,
                                     PROD_TYPE,
                                     INDUSTRY_TYPE_ID,
                                     INDUSTRY_TYPE_CODE,
                                     INDUSTRY_TYPE_NAME,
                                     PAR_INDUSTRY_TYPE_ID,
                                     INDUSTRY_TYPE_GRADE,
                                     IDENTITY_TYPE,
                                     IN_DATE,
                                     AUDIT_CUST_NUM,
                                     AUDIT_CUST_PARTY_NUM,
                                     ALL_CUST_NUM,
                                             ALL_INCOME,
                                     TY_1,
                                     TY_2,
                                     TY_3,
                                     TY_4,
                                     TY_5,
                                     TY_6,
                                     TY_7,
                                     TY_8,
                                     TY_9,
                                     TY_10,
                                     TY_11,
                                     TY_12,
                                     LY_1,
                                     LY_2,
                                     LY_3,
                                     LY_4,
                                     LY_5,
                                     LY_6,
                                     LY_7,
                                     LY_8,
                                     LY_9,
                                     LY_10,
                                     LY_11,
                                     LY_12
                                    )
                                VALUES(
                                     SEQ_REVENUE_STATISTICS_RES.NEXTVAL,
                                     prov_rec.REGION_ID,
                                     city_rec.COMMON_REGION_ID,
                                     city_rec.region_name,
                                     product_rec.code,
                                     industry_rec.INDUSTRY_TYPE_ID,
                                     industry_rec.INDUSTRY_TYPE_CODE,
                                     industry_rec.INDUSTRY_TYPE_NAME,
                                     industry_rec.PAR_INDUSTRY_TYPE_ID,
                                     industry_rec.INDUSTRY_TYPE_GRADE,
                                     identity_index,
                                     sysdate,
                                     revenue_rec.AUDIT_CUST_NUM,
                                     revenue_rec.AUDIT_CUST_PARTY_NUM,
                                     l_all_cust_num,
                                             l_all_income,
                                     revenue_rec.TY_1,
                                     revenue_rec.TY_2,
                                     revenue_rec.TY_3,
                                     revenue_rec.TY_4,
                                     revenue_rec.TY_5,
                                     revenue_rec.TY_6,
                                     revenue_rec.TY_7,
                                     revenue_rec.TY_8,
                                     revenue_rec.TY_9,
                                     revenue_rec.TY_10,
                                     revenue_rec.TY_11,
                                     revenue_rec.TY_12,
                                     revenue_rec.LY_1,
                                     revenue_rec.LY_2,
                                     revenue_rec.LY_3,
                                     revenue_rec.LY_4,
                                     revenue_rec.LY_5,
                                     revenue_rec.LY_6,
                                     revenue_rec.LY_7,
                                     revenue_rec.LY_8,
                                     revenue_rec.LY_9,
                                     revenue_rec.LY_10,
                                     revenue_rec.LY_11,
                                     revenue_rec.LY_12
                                );
                                --关闭单条游标
                                CLOSE revenues_cur;
                                ins_counter := ins_counter+1;
                                --DBMS_OUTPUT.PUT_LINE(ins_counter);
                                --判断数量，如果数量到5000条提交一下事务
                                IF MOD(ins_counter,5000)=0
                                THEN
                                   COMMIT;
                                END IF;
                              --结束内部块
                              END;
                           EXIT  prov_loop;--退出到最外循环
                         END LOOP identity_loop;
                   END loop industry_loop;
               END loop product_loop;
           END LOOP city_loop;
       END LOOP prov_loop;
       DBMS_OUTPUT.PUT_LINE(ins_counter);
       --提交最后的事务
       COMMIT;
END;