Hi,
I have field in postgres (9.2.4) with type json. The field looks like
Column | Type | Modifiers | Storage |
Stats target | Description
---------------------+-----------------------------+-----------+----------+--------------+-------------
my_id_field | json | | extended
| |
When I do " select my_id_field::json from table1", it returns something like
[]
[]
[]
["abc"]
[]
[]
[]
I like to change this from type json to text[] and included the following
in the migration
execute "alter table table1 add column new_id_field text[] default
'{}'::text[]"
execute "UPDATE table1 SET new_id_field = [my_id_field] where my_id_field
is not null"
I ended up with data like [["abc"]] and [[]], which was not what I wanted
Questions:
1) how do I convert the json type to text[]?
2) in ActiveRecord, how do I select rows from table1 that are not []?
TIA
m
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