1
Ich habe die folgende Abfrage:Postgres konvertieren Zeichenfolge zu Zeit
SELECT id, start_date::TIME, occurrence->0->>'startsOn' FROM service WHERE name='A.F';
Welche zurück:
id | start_date | ?column?
------+------------+---------------------------------
1573 | 18:00:00 | Mon, 29 Jun 2015 18:00:00 +0000
1592 | 10:00:00 | Wed, 24 Jun 2015 10:00:00 +0000
1605 | 18:00:00 | Thu, 25 Jun 2015 18:00:00 +0000
1571 | 10:00:00 | Mon, 29 Jun 2015 10:00:00 +0000
1591 | 20:15:00 | Tue, 30 Jun 2015 20:15:00 +0000
1578 | 18:00:00 | Mon, 29 Jun 2015 20:00:00 +0000
1620 | 12:00:00 | Sat, 27 Jun 2015 12:00:00 +0000
(7 rows)
, was ich versuche ist occurrence->0->>'startsOn'
zu Zeit zu tun konvertieren, so dass das erwartete Ergebnis sollte sein:
id | start_date | ?column?
------+------------+---------------------------------
1573 | 18:00:00 | 18:00:00
1592 | 10:00:00 | 10:00:00
1605 | 18:00:00 | 18:00:00
1571 | 10:00:00 | 10:00:00
1591 | 20:15:00 | 20:15:00
1578 | 18:00:00 | 20:00:00
1620 | 12:00:00 | 12:00:00
ich habe versucht, die folgenden:
SELECT id, start_date::TIME, occurrence->0->>'startsOn'::TIME FROM service WHERE name='A.F';
But it is not working as it gives me the following syntax error:
ERROR: invalid input syntax for type time: "startsOn"
Klammern nach oben .. '(occurrence-> 0 - >> 'startsOn')? :: Time' –