add batch
remove batch
split batch
comment selection
show hidden batches
hide batch
highlight batch
db<>fiddle
Db2
Firebird
MariaDB
MySQL
Node.js
Oracle
Postgres
SQLite
SQL Server
TimescaleDB
YugabyteDB
Developer-C 11.1
3.0
4.0
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
5.5
5.6
5.7
8.0
18
11g Release 2
18c
21c
23c
8.4
9.3
9.4
9.5
9.6
10
11
12
13
14
15
16
3.8
3.16
3.27
3.39
2012
2014
2016
2017
2017 (Linux)
2019
2019 (Linux)
2022
2.11
2.14
2.6
2.8
2.18
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
Sakila
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
AdventureWorks
no sample DB
no sample DB
AdventureWorks
no sample DB
no sample DB
no sample DB
no sample DB
no sample DB
run
markdown
donate
feedback
about
By using db<>fiddle, you agree to license everything you submit by
Creative Commons CC0
.
WITH yourTable AS ( SELECT 1 AS rn, 1 AS ID, date '2022-09-01' AS "date", NULL AS owner FROM dual UNION ALL SELECT 2, 1, date '2022-09-02', NULL FROM dual UNION ALL SELECT 3, 1, date '2022-09-03', 'Joe' FROM dual UNION ALL SELECT 4, 1, date '2022-09-04', NULL FROM dual UNION ALL SELECT 5, 1, date '2022-09-05', 'Jack' FROM dual UNION ALL SELECT 6, 2, date '2022-09-01', NULL FROM dual UNION ALL SELECT 7, 2, date '2022-09-02', 'John' FROM dual UNION ALL SELECT 8, 2, date '2022-09-02', 'John' FROM dual UNION ALL SELECT 9, 2, date '2022-09-02', 'John' FROM dual ), cte AS ( SELECT t.*, ROW_NUMBER() OVER (PARTITION BY ID ORDER BY "date") rn1, ROW_NUMBER() OVER (PARTITION BY ID, owner ORDER BY "date") rn2 FROM yourTable t ) SELECT ID, MIN("date") AS "date", NULL AS owner FROM cte WHERE owner IS NULL GROUP BY ID, rn1 - rn2 ORDER BY ID, "date";
ID
date
OWNER
1
01-SEP-22
null
1
04-SEP-22
null
2
01-SEP-22
null