下面是我的表结构和数据。
EMPLID EMPL_RCD EFFDT Eff_SEQ HR_STATUS PER_ORG
722243 0 21-Nov-18 0 A CWR
722243 0 15-May-19 0 A CWR
722243 0 20-May-19 0 I CWR
722243 1 20-May-19 0 A EMP
120707 1 14-May-19 0 A EMP
120707 0 29-May-19 0 I EMP
120707 1 29-May-19 0 I EMP
120707 2 29-May-19 0 A CWR
当我在查询中传递月份开始日期和结束日期（“ 01-MAY-2019”和“ 31-MAY-2019”）时，该查询应显示类似EMPLID 722243和120707的数据。
EMPLID Date PER_ORG HR_STATUS
---------------------------------------------------------
722243 01-MAY-19 CWR A
722243 02-MAY-19 CWR A
722243 03-MAY-19 CWR A
722243 04-MAY-19 CWR A
应显示相同，直到19年5月19日
722243 19-MAY-19 CWR A
120707 29-MAY-19 CWR A
120707 30-MAY-19 CWR A
120707 31-MAY-19 CWR A
请帮助我。
答案 0 :(得分：0)
Oracle设置：
CREATE TABLE table_name ( EMPLID, EMPL_RCD, EFFDT, Eff_SEQ, HR_STATUS, PER_ORG ) AS
SELECT 722243, 0, DATE '2018-11-21', 0, 'A', 'CWR' FROM DUAL UNION ALL
SELECT 722243, 0, DATE '2019-05-15', 0, 'A', 'CWR' FROM DUAL UNION ALL
SELECT 722243, 0, DATE '2019-05-20', 0, 'I', 'CWR' FROM DUAL UNION ALL
SELECT 722243, 1, DATE '2019-05-20', 0, 'A', 'EMP' FROM DUAL UNION ALL
SELECT 120707, 1, DATE '2019-05-14', 0, 'A', 'EMP' FROM DUAL UNION ALL
SELECT 120707, 0, DATE '2019-05-29', 0, 'I', 'EMP' FROM DUAL UNION ALL
SELECT 120707, 1, DATE '2019-05-29', 0, 'I', 'EMP' FROM DUAL UNION ALL
SELECT 120707, 2, DATE '2019-05-29', 0, 'A', 'CWR' FROM DUAL;
查询：所有PER_ORG值：
WITH bounds ( start_date, end_date ) AS (
SELECT DATE '2019-05-01', DATE '2019-05-31' FROM DUAL
),
calendar ( dt ) AS (
SELECT start_date + LEVEL - 1
FROM bounds
CONNECT BY start_date + LEVEL - 1 <= end_date
),
table_name_with_prev_status ( emplid, effdt, hr_status, per_org, prev_hr_status ) AS (
SELECT EMPLID,
EFFDT,
HR_STATUS,
PER_ORG,
LAG( HR_STATUS, 1, 'I' )
OVER ( PARTITION BY EMPLID, PER_ORG ORDER BY EFFDT, EMPL_RCD )
FROM table_name
),
statuses ( emplid, effdt, hr_status, per_org ) AS (
SELECT EMPLID,
DT,
COALESCE(
HR_STATUS,
LAG( HR_STATUS ) IGNORE NULLS
OVER ( PARTITION BY EMPLID, PER_ORG ORDER BY DT ),
LEAD( PREV_HR_STATUS ) IGNORE NULLS
OVER ( PARTITION BY EMPLID, PER_ORG ORDER BY DT )
),
PER_ORG
FROM calendar c
LEFT OUTER JOIN table_name_with_prev_status t
PARTITION BY ( t.EMPLID, t.PER_ORG )
ON ( c.dt = t.effdt )
)
SELECT *
FROM statuses
WHERE HR_STATUS = 'A'
ORDER BY emplid, effdt
输出：
EMPLID | EFFDT | HR_STATUS | PER_ORG -----: | :-------- | :-------- | :------ 120707 | 14-MAY-19 | A | EMP 120707 | 15-MAY-19 | A | EMP 120707 | 16-MAY-19 | A | EMP 120707 | 17-MAY-19 | A | EMP 120707 | 18-MAY-19 | A | EMP 120707 | 19-MAY-19 | A | EMP 120707 | 20-MAY-19 | A | EMP 120707 | 21-MAY-19 | A | EMP 120707 | 22-MAY-19 | A | EMP 120707 | 23-MAY-19 | A | EMP 120707 | 24-MAY-19 | A | EMP 120707 | 25-MAY-19 | A | EMP 120707 | 26-MAY-19 | A | EMP 120707 | 27-MAY-19 | A | EMP 120707 | 28-MAY-19 | A | EMP 120707 | 29-MAY-19 | A | CWR 120707 | 30-MAY-19 | A | CWR 120707 | 31-MAY-19 | A | CWR 722243 | 01-MAY-19 | A | CWR 722243 | 02-MAY-19 | A | CWR 722243 | 03-MAY-19 | A | CWR 722243 | 04-MAY-19 | A | CWR 722243 | 05-MAY-19 | A | CWR 722243 | 06-MAY-19 | A | CWR 722243 | 07-MAY-19 | A | CWR 722243 | 08-MAY-19 | A | CWR 722243 | 09-MAY-19 | A | CWR 722243 | 10-MAY-19 | A | CWR 722243 | 11-MAY-19 | A | CWR 722243 | 12-MAY-19 | A | CWR 722243 | 13-MAY-19 | A | CWR 722243 | 14-MAY-19 | A | CWR 722243 | 15-MAY-19 | A | CWR 722243 | 16-MAY-19 | A | CWR 722243 | 17-MAY-19 | A | CWR 722243 | 18-MAY-19 | A | CWR 722243 | 19-MAY-19 | A | CWR 722243 | 20-MAY-19 | A | EMP 722243 | 21-MAY-19 | A | EMP 722243 | 22-MAY-19 | A | EMP 722243 | 23-MAY-19 | A | EMP 722243 | 24-MAY-19 | A | EMP 722243 | 25-MAY-19 | A | EMP 722243 | 26-MAY-19 | A | EMP 722243 | 27-MAY-19 | A | EMP 722243 | 28-MAY-19 | A | EMP 722243 | 29-MAY-19 | A | EMP 722243 | 30-MAY-19 | A | EMP 722243 | 31-MAY-19 | A | EMP
查询：仅CWR个值：
WITH bounds ( start_date, end_date ) AS (
SELECT DATE '2019-05-01', DATE '2019-05-31' FROM DUAL
),
calendar ( dt ) AS (
SELECT start_date + LEVEL - 1
FROM bounds
CONNECT BY start_date + LEVEL - 1 <= end_date
),
table_name_with_prev_status ( emplid, effdt, hr_status, per_org, prev_hr_status ) AS (
SELECT EMPLID,
EFFDT,
HR_STATUS,
PER_ORG,
LAG( HR_STATUS, 1, 'I' )
OVER ( PARTITION BY EMPLID, PER_ORG ORDER BY EFFDT, EMPL_RCD )
FROM table_name
),
statuses ( emplid, effdt, hr_status, per_org ) AS (
SELECT EMPLID,
DT,
COALESCE(
HR_STATUS,
LAG( HR_STATUS ) IGNORE NULLS
OVER ( PARTITION BY EMPLID, PER_ORG ORDER BY DT ),
LEAD( PREV_HR_STATUS ) IGNORE NULLS
OVER ( PARTITION BY EMPLID, PER_ORG ORDER BY DT )
),
PER_ORG
FROM calendar c
LEFT OUTER JOIN table_name_with_prev_status t
PARTITION BY ( t.EMPLID, t.PER_ORG )
ON ( c.dt = t.effdt )
)
SELECT *
FROM statuses
WHERE HR_STATUS = 'A'
AND PER_ORG = 'CWR'
ORDER BY emplid, effdt
输出：
EMPLID | EFFDT | HR_STATUS | PER_ORG -----: | :-------- | :-------- | :------ 120707 | 29-MAY-19 | A | CWR 120707 | 30-MAY-19 | A | CWR 120707 | 31-MAY-19 | A | CWR 722243 | 01-MAY-19 | A | CWR 722243 | 02-MAY-19 | A | CWR 722243 | 03-MAY-19 | A | CWR 722243 | 04-MAY-19 | A | CWR 722243 | 05-MAY-19 | A | CWR 722243 | 06-MAY-19 | A | CWR 722243 | 07-MAY-19 | A | CWR 722243 | 08-MAY-19 | A | CWR 722243 | 09-MAY-19 | A | CWR 722243 | 10-MAY-19 | A | CWR 722243 | 11-MAY-19 | A | CWR 722243 | 12-MAY-19 | A | CWR 722243 | 13-MAY-19 | A | CWR 722243 | 14-MAY-19 | A | CWR 722243 | 15-MAY-19 | A | CWR 722243 | 16-MAY-19 | A | CWR 722243 | 17-MAY-19 | A | CWR 722243 | 18-MAY-19 | A | CWR 722243 | 19-MAY-19 | A | CWR
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