oracle存储过程及sql优化-（二）

接下来比较重要，我会先贴出一个存储过程，根据这个存储过程讲解

PROCEDURE AP_CXBB_GT3_SBFGL_SBFYJSQC
(OUT_RECORD OUT SYS_REFCURSOR,

 PI_XH PLS_INTEGER,
 PV_ZGSWJG  VARCHAR2 --管理单位
 --PI_HSND    PLS_INTEGER, --汇算年度
 --QR_HYDM    PLS_INTEGER --行业
 ) AS
   VI_HYXH PLS_INTEGER ;

BEGIN
  VI_HYXH:=NVL(PI_XH ,0);
  DELETE FROM TMP_GT3_SBFGL_WJSTJB;

    if VI_HYXH >= 6 AND VI_HYXH <= 36 then
   insert into TMP_GT3_sbfgl_WJSTJB
    SELECT  NSR.NSRSBH,
                    NSR.NSRMC,
                    NSR.SCJYDZ,
                    case
                      when NSRKZ.FDDBRYDDH is not null then
                       '法人' || NSRKZ.FDDBRYDDH
                      else
                       ''
                    end || case
                      when NSRKZ.SWDLRLXDH is not null then
                       ',税务代理人' || NSRKZ.SWDLRLXDH
                      else
                       ''
                    end || case
                      when NSRKZ.BSRYDDH is not null then
                       ',办税人' || NSRKZ.BSRYDDH
                      else
                       ''
                    end AS FDDBRGDDH,
                    F.SWJGMC,
                    G.SWJGMC
      FROM AP_CXBB_GT3_SBFAQYYIJSTJ_cs B ,
           H_DJ_NSRXX           NSR,
           H_DJ_NSRXX_KZ        NSRKZ,
           DM_GY_SWJG_JH F,
           DM_GY_SWJG_JH G
     WHERE NSR.ZGSWJ_DM = F.SWJG_DM(+)
       AND B.SWJGDM = G.SWJG_DM(+)
       AND B.DJXH = NSR.DJXH(+)
       AND B.DJXH = NSRKZ.DJXH(+)
      AND ( B.SWJGDM IN
               (SELECT SWJG_DM
                  FROM DM_GY_SWJG_JH V
                 START WITH V.SWJG_DM IN (PV_ZGSWJG)
                CONNECT BY PRIOR V.SWJG_DM = V.SJSWJG_DM))

        AND (VI_HYXH = 0 OR
               NSR.HY_DM IN
               (SELECT HY_DM
                   FROM DM_HY_JH
                  WHERE ZL IN
                        (SELECT HYDM FROM TEMP_HYDM_JH_HS WHERE XH = VI_HYXH)))

       ;
ELSE 

  insert into TMP_GT3_sbfgl_WJSTJB
    SELECT  NSR.NSRSBH,
                    NSR.NSRMC,
                    NSR.SCJYDZ,
                    case
                      when NSRKZ.FDDBRYDDH is not null then
                       '法人' || NSRKZ.FDDBRYDDH
                      else
                       ''
                    end || case
                      when NSRKZ.SWDLRLXDH is not null then
                       ',税务代理人' || NSRKZ.SWDLRLXDH
                      else
                       ''
                    end || case
                      when NSRKZ.BSRYDDH is not null then
                       ',办税人' || NSRKZ.BSRYDDH
                      else
                       ''
                    end AS FDDBRGDDH,
                    F.SWJGMC,
                    G.SWJGMC
      FROM AP_CXBB_GT3_SBFAQYYIJSTJ_cs B ,
           H_DJ_NSRXX           NSR,
           H_DJ_NSRXX_KZ        NSRKZ,
           DM_GY_SWJG_JH F,
           DM_GY_SWJG_JH G
     WHERE NSR.ZGSWJ_DM = F.SWJG_DM(+)
       AND B.SWJGDM = G.SWJG_DM(+)
       AND B.DJXH = NSR.DJXH(+)
       AND B.DJXH = NSRKZ.DJXH(+)
       AND ( B.SWJGDM IN
               (SELECT SWJG_DM
                  FROM DM_GY_SWJG_JH V
                 START WITH V.SWJG_DM IN (PV_ZGSWJG)
                CONNECT BY PRIOR V.SWJG_DM = V.SJSWJG_DM))
        AND (VI_HYXH = 0 OR
               NSR.HY_DM IN
               (SELECT HY_DM
                   FROM DM_HY_JH
                  WHERE DL IN
                        (SELECT HYDM FROM TEMP_HYDM_JH_HS WHERE XH = VI_HYXH)))

       ;
       END IF ;

  OPEN OUT_RECORD FOR
    select * from TMP_GT3_sbfgl_WJSTJB A;
  ------------------------------------------------------------------------------------------

END AP_CXBB_GT3_SBFGL_SBFYJSQC;

代码前部分

PROCEDURE AP_CXBB_GT3_SBFGL_SBFYJSQC
(OUT_RECORD OUT SYS_REFCURSOR,

 PI_XH PLS_INTEGER,
 PV_ZGSWJG  VARCHAR2 --管理单位
 --PI_HSND    PLS_INTEGER, --汇算年度
 --QR_HYDM    PLS_INTEGER --行业
 ) AS
   VI_HYXH PLS_INTEGER ;

首先我们定义了 一个存储过程 AP_CXBB_GT3_SBFGL_SBFYJSQC

附注：创建 存储过程 PROCEDURE的语句为

create or replace  PROCEDURE 

如上：我们定义了SYS_REFCURSOR游标类型的输出变量OUT_RECORD ， PLS_INTEGER整数类型输入参数PI_XH, 和VARCHAR2字符串类型的输入参数PV_ZGSWJG

还有一个PLS_INTEGER类型变量 VI_HYXH

VI_HYXH:=NVL(PI_XH ,0); 

接着我们对变量赋值，注意 orale赋值符号为 ：=   而不是 = ，其中nvl为判断参数是否空并做处理的内置函数

从begin 到end的代码块实现的业务流程我简单介绍下

1.删除临时表数据

2.将需要的数据存到临时表

3.将临时表数据放到游标输出

在写业务复杂的存储过程时，我们时常会用到临时表，游标。

下一章介绍该存储过程的 sql语句