"서비스 시간"의 시작 날짜와 종료 날짜가 나열된 테이블이 있습니다. 모든 행을 검색하고 날짜의 간격을 기준으로 서비스 중단을 식별 할 수있는 쿼리를 원합니다.복잡한 SQL 쿼리 - 날짜 범위 축소
Data:
Start End
1/1/2000 2/1/2001
2/2/2001 4/1/2001
4/1/2004 6/2/2006
6/3/2006 9/1/2010
8/1/2011 9/1/2012
Desired result:
1/1/2001 - 4/1/2001 //The first two ranges collapsed because no break in service
4/1/2004 - 9/1/2010 // The 3rd and 4th rows collapsed because no real break in service
8/1/2011 - 9/1/2012
이 아마 더 쉽게 나에게 가까이 갈 수있는 SQL 부두가있는 경우 그냥 궁금, 응용 프로그램 로직 또는 저장 프로 시저에서 수행.
Table definition:
CREATE TABLE CONG_MEMBER_TERM
(
CONG_MEMBER_TERM_ID NUMBER(10, 0) NOT NULL
, CONGRESS_ID NUMBER(10, 0) NOT NULL
, CHAMBER_CD VARCHAR2(30 BYTE) NOT NULL
, CONG_MEMBER_ID NUMBER(10, 0) NOT NULL
, STATE_CD CHAR(2 BYTE) NOT NULL
, CONG_MEMBER_TYPE_CD VARCHAR2(30 BYTE) NOT NULL
, DISTRICT NUMBER(10, 0)
, START_DT TIMESTAMP(6) WITH TIME ZONE
, END_DT TIMESTAMP(6) WITH TIME ZONE
, CREATE_DT TIMESTAMP(6) WITH TIME ZONE NOT NULL
, UPDATE_DT TIMESTAMP(6) WITH TIME ZONE NOT NULL
)
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2945,104,'H',494,'OK','REP',2,to_timestamp_tz('04-JAN-95 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('04-OCT-96 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.47.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.48.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2946,105,'H',494,'OK','REP',2,to_timestamp_tz('07-JAN-97 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('19-DEC-98 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.47.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.49.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2947,106,'H',494,'OK','REP',2,to_timestamp_tz('06-JAN-99 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('15-DEC-00 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.47.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.49.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2948,109,'S',494,'OK','SEN',null,to_timestamp_tz('04-JAN-05 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('09-DEC-06 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.48.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.49.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2949,110,'S',494,'OK','SEN',null,to_timestamp_tz('04-JAN-07 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-JAN-09 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.48.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.49.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2951,111,'S',494,'OK','SEN',null,to_timestamp_tz('06-JAN-09 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('22-DEC-10 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.48.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.49.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
Insert into CONG_MEMBER_TERM (CONG_MEMBER_TERM_ID,CONGRESS_ID,CHAMBER_CD,CONG_MEMBER_ID,STATE_CD,CONG_MEMBER_TYPE_CD,DISTRICT,START_DT,END_DT,CREATE_DT,UPDATE_DT) values (2950,112,'S',494,'OK','SEN',null,to_timestamp_tz('05-JAN-11 01.00.00.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),null,to_timestamp_tz('02-MAY-12 09.45.48.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'),to_timestamp_tz('02-MAY-12 09.45.49.000000000 AM -05:00','DD-MON-RR HH.MI.SS.FF AM TZR'));
이전 서비스와 다음 서비스 사이의 간격이 24개월보다 큰 경우,
, 그것은 서비스의 "차이"로 간주됩니다.
"서비스 중단"은 무엇을 의미합니까? 한 달 이상 간격이 있습니까? –
[유사한 질문] (SQL 서버에 대한 http://stackoverflow.com/questions/6068619/merging-date-intervals-in-sql-server) - 올바른 방향으로 당신을 가리킬 수도 있지만 모든 대답은 CTE가 필요합니다 - SQL 서버 기능. – SWeko
PostgreSQL, SQLite, DB2, Oracle 및 SQL Server는 CTE (WITH 절)를 지원하지 않습니다. 공정하게 SqlLite가 2013에 추가했습니다. –