[英]What Postgres query can i expand the array of json column and have each field in the array as a row?
[
{
"id":"193",
"duration":0,
"count":32,
"date":"2021-11-10T18:55:00+05:30",
"period_end":"2022-01-11T00:00:00.000Z",
"started_at":"2021-11-10T18:55:00+05:30",
"ended_at":"2021-11-10T19:45:00+05:30"
}
]
I'm trying to have each of those object keys as a row.我正在尝试将这些 object 中的每一个键都排成一行。 can anyone help?谁能帮忙?
I think each as a column would be more usable, but you asked for each as a row, so you could UNION a bunch of queries such as this:我认为每个作为一列会更有用,但你要求每个作为一行,所以你可以 UNION 一堆查询,例如:
select 1, info ->> 'id'
from table1
union
select 2, info ->> 'duration'
from table1
union
select 3, info ->> 'count'
from table1
union
select 4, info ->> 'date'
from table1
union
select 5, info ->> 'period_end'
from table1
union
select 6, info ->> 'started_at'
from table1
union
select 7, info ->> 'ended_at'
from table1
order by 1
Output: Output:
1 193
2 0
3 32
4 2021-11-10T18:55:00+05:30
5 2022-01-11T00:00:00.000Z
6 2021-11-10T18:55:00+05:30
7 2021-11-10T19:45:00+05:30
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