Oracle date winter time

ALTER SESSION SET NLS_LANGUAGE=english; -- First day of week
SELECT
	-- Last Sunday of October at 02:00
	NEXT_DAY(LAST_DAY(TO_DATE(TO_CHAR('01/10/' 
        || (EXTRACT(YEAR FROM SYSDATE)-5 + level) || '02:00:00'), 
           'DD/MM/YYYY HH24:MI:SS')) - INTERVAL '7' DAY, 'SUNDAY') AS H_WINTER,
	-- Last Sunday of March at 02:00 (missing hour)
	NEXT_DAY(LAST_DAY(TO_DATE(TO_CHAR('01/03/' 
		|| (EXTRACT(YEAR FROM SYSDATE)-5 + level) || '02:00:00'),
		'DD/MM/YYYY HH24:MI:SS')) - INTERVAL '7' DAY, 'SUNDAY') AS H_SUMMER
FROM DUAL CONNECT BY level <=10;

Similar codes

5 votes253 views1 answer
Postgres upsert
SQL
4 votes280 views3 answers
Mysql modify foreign key
SQL
0 vote264 views1 answer
Generate sequence number in sql server
SQL
0 vote327 views1 answer
FIND most frequent word in sql server
SQL
4 votes295 views1 answer
Mysql copy table with new name
SQL
0 vote279 views1 answer
Sql server convert date to weekday
SQL
0 vote278 views1 answer
What is the use of index in mysql table
SQL
2 votes276 views1 answer
Mysql cannot delete or update a parent row
SQL
0 vote281 views2 answers
Don't know how to set rpath on your system, if MySQL libraries are not in path mysql2 may not load
SQL
0 vote285 views1 answer
Sql #region
SQL