Postgres and jsonb - search value at any key

问题

Is possible to look for a given value at any key in a JSONB column in Postgres? In the documentation I can't see any example.

Example value at a JSONB column:

{
  a: 1,
  b: 2,
  c: 3
}

I want to find all records that have 1 as a value anywhere. NOTE: there may be other keys than a, b, c unknown at the moment.

回答1:

use value of jsonb_each_text, sample based on previous sample of McNets,:

t=# select * from json_test join jsonb_each_text(json_test.data) e on true 
where e.value = '1';
 id |                 data                 | key | value
----+--------------------------------------+-----+-------
  1 | {"a": 1}                             | a   | 1
  3 | {"a": 1, "b": {"c": "d", "e": true}} | a   | 1
(2 rows)

回答2:

Use json_each_text():

with my_data(id, jdata) as (
values
    (1, '{ "a": 1, "b": 2, "c": 3}'::json),
    (2, '{ "j": 4, "k": 5, "l": 6}'::json),
    (3, '{ "x": 1, "y": 2, "z": 3}'::json)
)

select id, jdata
from my_data,
lateral json_each_text(jdata) 
where value::int = 1

 id |           jdata           
----+---------------------------
  1 | { "a": 1, "b": 2, "c": 3}
  3 | { "x": 1, "y": 2, "z": 3}
(2 rows)    

来源：https://stackoverflow.com/questions/43739601/postgres-and-jsonb-search-value-at-any-key