#DB #Database

- 통계를 위한 Time Table 생성
```sql

create table ucm.sacp_report_times as
select dt_se, hh, mi, ss
from (
		select 'S' as dt_se, hh, mi, ss
					from (SELECT lpad((ROWNUM -1), 2, '0') AS hh FROM DUAL CONNECT BY LEVEL <= 24) h
						 , (SELECT lpad((ROWNUM -1), 2, '0') AS mi FROM DUAL CONNECT BY LEVEL <= 60) m
						 , (SELECT lpad((ROWNUM -1), 2, '0') AS ss FROM DUAL CONNECT BY LEVEL <= 60) s
	    union all
		select 'M' as dt_se, hh, mi, null as ss
					from (SELECT lpad((ROWNUM -1), 2, '0') AS hh FROM DUAL CONNECT BY LEVEL <= 24) h
						 , (SELECT lpad((ROWNUM -1), 2, '0') AS mi FROM DUAL CONNECT BY LEVEL <= 60) m
		union all				 
		select 'H' as dt_se, hh, null, null as ss
					from (SELECT lpad((ROWNUM -1), 2, '0') AS hh FROM DUAL CONNECT BY LEVEL <= 24) h	
 ) tm
order by dt_se, hh, mi,ss		


```

- 집계 기준 일시 일괄 생성
```sql

CREATE TABLE UCM.SACP_STATS_TIMES (
	DT VARCHAR(32) not null,
	YMD VARCHAR(8),
	HH VARCHAR(8),
	MI VARCHAR(8),
	SS VARCHAR(8),
	CONSTRAINT PK_SACP_STATS_TIMES PRIMARY KEY (DT)
);

-- 월별 생성(년월일시분초-yyyyMNddhh24miss)
insert into ucm.sacp_stats_times
select ymd||hh||mi||ss as dt, ymd, hh, mi, ss
	from (SELECT TO_CHAR(TO_DATE('202409'||'01','YYYYMMDD') -1 + LEVEL, 'YYYYMMDD') AS ymd FROM DUAL CONNECT BY LEVEL <= 31 ) d
	 , (select * from ucm.sacp_report_times where dt_se = 'S')


```