DB2存储过程标准

CREATE OR REPLACE PROCEDURE "FCT"."PROC_FCT_DSB_SERIES"(IN ACCOUNTING_DATE DATE)
-------------------------------------------------------------------------------
LANGUAGE SQL
SPECIFIC PROC_FCT_DSB_SERIES
------------------------------------------------------------------------------
-- 功能描述:描述该存储过程的用处  处理流程

-- 输入:当前程序调用日期8位数(如20140101)
-- 源表:
-- 目标表:
-- 修改日志
-- 类型    作者    日期      备注
-- 创建   

------------------------------------------------------------------------------

BEGIN
/*声明异常处理使用变量*/
DECLARE SQLCODE, SMY_SQLCODE INT DEFAULT 0;            --SQLCODE
DECLARE SMY_STEPNUM INT DEFAULT 1;                     --过程内部位置标记
DECLARE SMY_STEPDESC VARCHAR(100) DEFAULT '';          --过程内部位置描述
DECLARE SMY_DATE DATE;                                 --临时日期变量
DECLARE SMY_RCOUNT INT;                                --DML语句作用记录数
DECLARE SMY_PROCNM VARCHAR(100);                       --存储过程名称
DECLARE AT_END SMALLINT DEFAULT 0;                     --SQL查询结果结束标志

/*声明存储过程使用变量*/
DECLARE CUR_YEAR SMALLINT;                             --
DECLARE CUR_MONTH SMALLINT;                            --
DECLARE CUR_DAY INTEGER;                               --
DECLARE CLEAR_MONTH_DAY INTEGER;                       --清理数据日
DECLARE CLEAR_MONTH_DATE DATE;                         --清理数据日期
DECLARE YR_FIRST_DAY DATE;                             --本年初1月1日
DECLARE QTR_FIRST_DAY DATE;                            --本季度第1日
DECLARE MONTH_FIRST_DAY DATE;                          --本月第1日
DECLARE NEXT_YR_FIRST_DAY DATE;                        --下年1月1日
DECLARE NEXT_QTR_FIRST_DAY DATE;                       --下季度第1日
DECLARE NEXT_MONTH_FIRST_DAY DATE;                     --下月第1日
DECLARE MONTH_DAY SMALLINT;                            --本月天数
DECLARE YR_DAY SMALLINT;                               --本年天数
DECLARE QTR_DAY SMALLINT;                              --本季度天数

DECLARE TMP_YEAR                   CHAR(4) ;                    --年(YYYY)
DECLARE TMP_MON                    CHAR(2) ;                    --月(MM)
DECLARE TMP_YMD                     CHAR(8);                     --年月(YYYYMM)
DECLARE TMP_DAY                    CHAR(2) ;                    --日(DD)
DECLARE LST_TMP_YEAR           CHAR(4) ;                    --上年(YYYY)
DECLARE PRE_LST_TMP_YEAR  CHAR(4) ;                       --前年(YYYY)
DECLARE LST_TMP_MON            CHAR(2) ;                    --上月(MM)
DECLARE MTH_DAY                   INT ;                        --月数(INTEGER)
DECLARE YEAR_DAY                   INT ;                        --年初到当前时间的天数(INTEGER)
DECLARE LAST_MTH_DAY             INT ;                        --上月末到年初的天数(INTEGER)
DECLARE PD_DAY                        DATE;                                                 --上日
DECLARE PTD_DAY                        DATE;                                                 --旬初
DECLARE MI_DAY                        DATE;                                                 --月初
DECLARE QI_DAY                        DATE;                                                 --月初
DECLARE YI_DAY                        DATE;                                                 --月初
DECLARE CP_DAY                        DATE;                                                 --月初
DECLARE CP_YI_DAY                    DATE;                                                 --月初
DECLARE    MTH                                SMALLINT;                                         --月份数(INT)
DECLARE MAX_ACG_DT DATE;                               --最大会计日期
DECLARE DELETE_SQL1 VARCHAR(200);                      --删除HIS表动态SQL
DECLARE DELETE_SQL2 VARCHAR(200);                      --删除SMY表动态SQL

/*1.定义针对SQL异常情况的句柄(EXIT方式).
  2.将出现SQL异常时在存储过程中的位置(SMY_STEPNUM),位置描述(SMY_STEPDESC),SQLCODE(SMY_SQLCODE)记入表SMY_LOG中作调试用.
  3.调用RESIGNAL重新引发异常,跳出存储过程执行体,对引发SQL异常之前存储过程体中所完成的操作进行回滚.*/
---------------------------异常处理---------------------------BEGIN
DECLARE CONTINUE HANDLER FOR NOT FOUND
SET at_end=1;
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
    SET SMY_SQLCODE = SQLCODE;
  ROLLBACK;
  INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE, NULL, CURRENT TIMESTAMP);
  COMMIT;
  RESIGNAL;
END;

DECLARE CONTINUE HANDLER FOR SQLWARNING
BEGIN
  SET SMY_SQLCODE = SQLCODE;
  INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE, NULL, CURRENT TIMESTAMP);
  COMMIT;
END;
---------------------------异常处理---------------------------END

/*初始化变量*/
SET TMP_YEAR = SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),1,4);            --
SET TMP_MON  = SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),6,2);            --
SET TMP_YMD  = TO_CHAR(ACCOUNTING_DATE,'YYYYMMDD');                          --年月日
SET TMP_DAY  = SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),9,2);            --
SELECT SUBSTR(TO_CHAR((ACCOUNTING_DATE - 1 YEAR),'YYYY-MM-DD'),1,4), SUBSTR(TO_CHAR((ACCOUNTING_DATE - 1 MONTHS),'YYYY-MM-DD'),6,2),SUBSTR(TO_CHAR((ACCOUNTING_DATE - 2 YEAR),'YYYY-MM-DD'),1,4)
INTO LST_TMP_YEAR,LST_TMP_MON ,PRE_LST_TMP_YEAR FROM SYSIBM.SYSDUMMY1;
SELECT INT(SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYYMMDD'),5,2)) INTO MTH_DAY FROM SYSIBM.SYSDUMMY1 ;
SELECT (DAYS(ACCOUNTING_DATE)-DAYS(TO_DATE(TMP_YEAR||'-01-01','YYYY-MM-DD'))+1)  INTO YEAR_DAY FROM SYSIBM.SYSDUMMY1 ;
SELECT (DAYS(TO_DATE(TMP_YEAR||TMP_MON||'01','YYYY-MM-DD'))-DAYS(TO_DATE(TMP_YEAR||'-01-01','YYYY-MM-DD')))  INTO LAST_MTH_DAY FROM SYSIBM.SYSDUMMY1 ;


SET        PD_DAY          = ACCOUNTING_DATE - 1 DAY;                                                            --上日
SET        MI_DAY         = TO_DATE(SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),1,7)||'-01','YYYY-MM-DD') - 1 DAY;                                    --月初
SELECT        CASE WHEN SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),9,2)<=10         THEN MI_DAY
                                             WHEN (SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),9,2)>10          
                                                         AND SUBSTR(TO_CHAR(ACCOUNTING_DATE,'YYYY-MM-DD'),9,2)<=20) THEN TO_DATE(TMP_YEAR||TMP_MON||'10','YYYY-MM-DD')
                                             ELSE TO_DATE(TMP_YEAR||TMP_MON||'20','YYYY-MM-DD') END
                                             INTO PTD_DAY        FROM            SYSIBM.DUAL;                --旬初

SELECT        CASE WHEN TMP_MON IN ('01','02','03') THEN TO_DATE(TMP_YEAR||'-01-01','YYYY-MM-DD') -1 DAY
                                                WHEN TMP_MON IN ('04','05','06') THEN TO_DATE(TMP_YEAR||'-03-31','YYYY-MM-DD')
                                                WHEN TMP_MON IN ('07','08','09') THEN TO_DATE(TMP_YEAR||'-06-30','YYYY-MM-DD')
                                                ELSE TO_DATE(TMP_YEAR||'-09-30','YYYY-MM-DD') END INTO QI_DAY FROM SYSIBM.DUAL;        --季初

SET        YI_DAY         = TO_DATE(LST_TMP_YEAR||'-12-31','YYYY-MM-DD');                --年初
SET        CP_DAY         = CASE WHEN TMP_YMD <> TMP_YEAR||'0229' THEN TO_DATE(TMP_YMD -10000,'YYYY-MM-DD') ELSE TO_DATE((TMP_YEAR-1)||'0228','YYYY-MM-DD') END;     --同期
SET        CP_YI_DAY     = TO_DATE(PRE_LST_TMP_YEAR ||'-12-31','YYYY-MM-DD');        --同期年初
SELECT    INT(SUBSTR(TMP_YMD,5,2))    INTO MTH    FROM SYSIBM.DUAL;--月数(INT)

SET SMY_PROCNM = 'PROC_FCT_DSB_SERIES';
SET SMY_DATE=ACCOUNTING_DATE;
SELECT MAX(LAST_ETL_ACG_DT) INTO MAX_ACG_DT FROM SMY.ORG_CST_SMY;

SET DELETE_SQL1='ALTER TABLE HIS.ORG_CST_SMY ACTIVATE NOT LOGGED INITIALLY WITH EMPTY TABLE'; --清空HIS表
SET DELETE_SQL2='ALTER TABLE SMY.ORG_CST_SMY ACTIVATE NOT LOGGED INITIALLY WITH EMPTY TABLE'; --清空SMY表

/*Delete日志表,条件SMY_PROCNM=当前存储过程名字,SMY_DATE=ACCOUNTING_DATE,并插入新的起始标志*/
DELETE FROM SMY.SMY_LOG WHERE SMY_ACT_DT = SMY_DATE AND SMY_PROC_NM = SMY_PROCNM;
INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, 'PROCEDURE START.', SMY_SQLCODE, SMY_RCOUNT, CURRENT TIMESTAMP);

/*存储过程Begin*/

/*Step.1 : 数据恢复与备份*/
SET SMY_STEPNUM = SMY_STEPNUM + 1 ;
SET SMY_STEPDESC = '数据恢复与备份';

IF MAX_ACG_DT=ACCOUNTING_DATE THEN
   EXECUTE IMMEDIATE DELETE_SQL2;
   COMMIT;
   INSERT INTO SMY.ORG_CST_SMY SELECT * FROM HIS.ORG_CST_SMY;
   COMMIT;
   GET DIAGNOSTICS SMY_RCOUNT = ROW_COUNT;
   INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE ,SMY_RCOUNT, CURRENT TIMESTAMP);
ELSE
   EXECUTE IMMEDIATE DELETE_SQL1;
   COMMIT;
   INSERT INTO HIS.ORG_CST_SMY SELECT * FROM SMY.ORG_CST_SMY;
   COMMIT;
   GET DIAGNOSTICS SMY_RCOUNT = ROW_COUNT;
   INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE ,SMY_RCOUNT, CURRENT TIMESTAMP);
END IF;

GET DIAGNOSTICS SMY_RCOUNT = ROW_COUNT;
INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE ,SMY_RCOUNT, CURRENT TIMESTAMP);
COMMIT;

/*Step.2 : 删除目标表数据*/
SET SMY_STEPNUM = SMY_STEPNUM + 1 ;
SET SMY_STEPDESC = '删除目标表数据';

DELETE FROM FCT.FCT_DSB_SERIES WHERE DAY_ID = ACCOUNTING_DATE ;

GET DIAGNOSTICS SMY_RCOUNT = ROW_COUNT;
INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE ,SMY_RCOUNT, CURRENT TIMESTAMP);
COMMIT;

/*Step.3 : update最后更新日期*/
SET SMY_STEPNUM = SMY_STEPNUM + 1 ;
SET SMY_STEPDESC = 'update最后更新日期';

UPDATE FCT.FCT_DSB_SERIES SET LAST_ETL_ACG_DT = ACCOUNTING_DATE;


GET DIAGNOSTICS SMY_RCOUNT = ROW_COUNT;--
INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE ,SMY_RCOUNT, CURRENT TIMESTAMP);



/*Step.4 : 标记存储过程结束*/
SET SMY_STEPNUM = SMY_STEPNUM + 1 ;
SET SMY_STEPDESC = '存储过程结束!';

GET DIAGNOSTICS SMY_RCOUNT = ROW_COUNT;--
INSERT INTO SMY.SMY_LOG VALUES(SMY_PROCNM, SMY_DATE, SMY_STEPNUM, SMY_STEPDESC, SMY_SQLCODE ,SMY_RCOUNT, CURRENT TIMESTAMP);


COMMIT;
END@
原文地址:https://www.cnblogs.com/Jims2016/p/6735891.html