【LEFT JOIN 实战记录】统计查询-问题明细指标查询

--利用ROWNUM，实现序列号的展示
SELECT ROWNUM AS NUM,*,
--计算百分比时，如果分母存在可以能为0的状态时，可以通过NUllIF（X,Y）函数来避免
--NULLIF（X,Y） 当X=Y时，为NULL，否则为 X
SELECT ROWNUM AS NUM,*,
TO_NUMBER(RECTIFY_COUNT)/NULLIF(TO_NUMBER(ALL_PROBLEM_COUNT),0) AS RECTIFY_RATE,
TO_NUMBER(CAN_RECTIFY_COUNT)/NULLIF(TO_NUMBER(ALL_CAN_RECTIFY_COUNT),0) AS CAN_RECTIFY_RATE,
(PROMOTE_MONEY_CASH+SAVINGS_AMOUNT)/NULLIF(DEAL_MONEY,0) AS DEC_REPORT_RECTIFY_RATE
FROM (SELECT
D.CODE_NAME,
COUNT(P.PROBLEM_UUID) AS ALL_PROBLEM_COUNT,
COUNT(CASE WHEN<
4000
/span> P.UNRECTIFY_REASON = '00030003' THEN NULL ELSE 1 END) AS ALL_CAN_RECTIFY_COUNT,
COUNT
(
CASE WHEN (P.FINALLY_CHECK_STATE='1' OR P.FINALLY_CHECK_STATE='2' OR P.FINALLY_CHECK_STATE='3') AND P.UNRECTIFY_REASON != '00030003' THEN 1 ELSE NULL END
) AS CAN_RECTIFY_COUNT,
COUNT
(
CASE WHEN P.FINALLY_CHECK_STATE='1' OR P.FINALLY_CHECK_STATE='2' OR P.FINALLY_CHECK_STATE='3' THEN 1 ELSE NULL END
) AS RECTIFY_COUNT,
COUNT
(
CASE WHEN P.FINALLY_CHECK_STATE='2' THEN 1 ELSE NULL END
) AS RECTIFY_2_COUNT,
COUNT
(
CASE WHEN P.FINALLY_CHECK_STATE='1' THEN 1 ELSE NULL END
) AS RECTIFY_1_COUNT,
COUNT
(
CASE WHEN P.FINALLY_CHECK_STATE='3' THEN 1 ELSE NULL END
) AS RECTIFY_3_COUNT,
--将varchar型转换为number后，在SUM求和
SUM(TO_NUMBER(P.DEAL_MONEY)) AS DEAL_MONEY,
SUM(TO_NUMBER(P.PROMOTE_MONEY_CASH)) AS PROMOTE_MONEY_CASH,
SUM(TO_NUMBER(F.SAVINGS_AMOUNT)) AS SAVINGS_AMOUNT

FROM
--此处查询分组数据，按各个表分组
--LPAD函数，左补位
--详细链接：https://www.2cto.com/database/201112/115416.html
--此处补位的原因是因为，在字典表中，问题类型存在 一，二，三级的“同名”的情况，例如“其他”，1,2,3级均有。
--同名的情况下，按名字来分组，导致只能展现出一条数据，所以通过给不同等级的名称左补位来区分
--通过判断LENGTH(code_value)/3的值来补位
(SELECT CODE_VALUE,LPAD(CODE_NAME,LENGTH(CODE_VALUE)/3+LENGTH(CODE_NAME),' -') AS CODE_NAME FROM CODE_INFO WHERE DATA_SORT_UUID = '00004'  AND IS_DEL = '0' ORDER BY CODE_VALUE) D
LEFT JOIN
--TODO 此处未考虑全行业项目事项
(SELECT PROBLEM_UUID,PROBLEM_NAME, BUDGET_YEAR, DOCUMENT_TYPE,
RESPONSIBILITY_SUBJECT, RECTIFY_STATE, OVERDUE, METHOD, UNRECTIFY_REASON_REMARK,
UNRECTIFY_REASON, SITUATION_PLAN, REMARK, ANALYSIS_TAG, ANALYSIS_REASON, FIRST_CHECK_TAG,
PROBLEM_NATURE, DETAILED, AMOUNT, UNIT, HANDLE_SITUATION, DEAL_MONEY, DURING_AUDIT_MONEY,
PROMOTE_MONEY, PROMOTE_MONEY_CASH,  FINALLY_CHECK_STATE,  PROBLEM_NATURE_NAME, DETAILED_NAME,
PRJ.PROJECT_UUID,PLAN_YEAR,PROJECT_NAME,OFFICESID,PROJECT_CLASSIFICATION FROM PROJECT PRJ
LEFT JOIN PROBLEM ON PROBLEM.PROJECT_UUID = PRJ.PROJECT_UUID
WHERE PRJ.IS_DEL = '0' AND PROBLEM.IS_DEL   = '0'
) P
ON
P.DETAILED LIKE '%'||D.CODE_VALUE||'%'
AND (P.OFFICESID = ? OR '' = ? )
AND (P.DOCUMENT_TYPE = ? OR '' = ? )
AND (P.PROJECT_CLASSIFICATION = ? OR '' = ? )
AND (P.PLAN_YEAR = ? OR '' = ? )
LEFT JOIN FOLLOWUP F
ON F.PROBLEM_UUID = P.PROBLEM_UUID
--后续填报事项表（Followup），事项表与后续填报事项表存在1对多关系，通过VERSION版本号来区分
--MAX函数找出对应事项表关联得后续填报事项表中最高版本，并将值返回给查询条件（F.version=X）
--F.version is null 代表只首次填报了，还未开始后续填报或不需要后续填报的情况
AND (F.VERSION = (SELECT TO_CHAR(MAX(TO_NUMBER(VERSION))) FROM FOLLOWUP WHERE FOLLOWUP.PROBLEM_UUID = P.PROBLEM_UUID) OR F.VERSION IS NULL)
WHERE 1=1
AND (D.CODE_NAME LIKE '%'||?||'%' OR '' = ? )
AND  (? LIKE '%'||(LENGTH(D.CODE_NAME))||'%' OR '' = ? )
GROUP BY
D.CODE_VALUE,
D.CODE_NAME)