Arup Rakshit <a...@zeit.io> writes:
> I wrote the below SQL which works and give me what I want, but it doesn’t
> work in 9.5 version. I wrote this query in PG 10. I want to change it so that
> I can run it on 9.5 as production using 9.5 version. I need help on this.
> SELECT DISTINCT
> ARRAY [jsonb_array_elements(data) ->> 'group',
> jsonb_array_elements(jsonb_array_elements(data) -> 'properties') ->> 'name']
> FROM
> "vessels"
> WHERE
> "vessels"."deleted_at" IS NULL
> AND "vessels"."company_id" = '7d105acd-be5a-4225-a2db-b549105e4172';
> When I ran the same query to production I get error:
> ERROR: set-valued function called in context that cannot accept a set
IIRC, you can't nest calls of set-returning functions before about v10.
One workaround is to put the inner set-returning function call into a
sub-select.
regards, tom lane
