search for multiple values in comma separated column (postgresql) - postgresql

Question

I need to fetch all records where these (5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5) values exists in categories_id column.
The value that I need to search in categories_id can be multiple because it coming from the form.
+--------------------------------------+-------------+-------------+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
| id | name | alias | description | categories_id |
+--------------------------------------+-------------+-------------+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 5565c08d-9f18-4b76-9cae-4a8261af48f5 | Honeycolony | honeycolony | null | ["5565bffd-7f64-494c-8950-4bef61af48f5"] |
+--------------------------------------+-------------+-------------+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
| c8f16660-32cf-11e6-b73c-1924f891ba4d | LOFT | loft | null | ["5565bffd-25bc-4b09-8a83-4bef61af48f5","5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5"] |
+--------------------------------------+-------------+-------------+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 5565c17f-80d8-4390-aadf-4a8061af48f5 | Fawn Shoppe | fawn-shoppe | null | ["5565bffd-25bc-4b09-8a83-4bef61af48f5","5565bffd-0744-4740-81f5-4bef61af48f5","5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5"] |
+--------------------------------------+-------------+-------------+-------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------+
I have this function which work as in_array function php.
CREATE OR REPLACE FUNCTION public.arraycontain(
x json,
y json)
RETURNS boolean
LANGUAGE 'plpgsql'
COST 100
VOLATILE
AS $BODY$
DECLARE a text;b text;
BEGIN
FOR a IN SELECT json_array_elements_text($1)
LOOP
FOR b IN SELECT json_array_elements_text($2)
LOOP
IF a = b THEN
RETURN TRUE;
END IF;
END LOOP;
END LOOP;
RETURN FALSE ;
END;
$BODY$;
ALTER FUNCTION public.arraycontain(json, json)
OWNER TO postgres;
But when I do this:
select * from "stores"
where arrayContain(stores.categories_id::JSON,'["5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5"]')
it shows
ERROR: invalid input syntax for type json
DETAIL: The input string
ended unexpectedly.
CONTEXT: JSON data, line 1: SQL state: 22P02
here is the sqlfiddle (I couldn't update the arraycontain function in fiddle.)
My expected output from the fiddle is it should return last 3 rows that is Furbish Studio,Fawn Shoppe AND LOFT if search using this values ["5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5"])
I am open for any recommendation.
I also tried this query below but it returns empty.
select id
from stores
where string_to_array(categories_id,',') && array['5565bffd-cd78-4e6f-ae13-4bef61af48f5','5565bffd-b1c8-4556-ae5d-4bef61af48f5'];
EDIT:
This code is actually a filter to filter data. So if I only filter using categories it didn't work but if there is a query before it it works
select * from "stores"
where name like '%ab%' and arrayContain(stores.categories_id::JSON,'["5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5"]')
also the thing that amaze me is that the '%ab%' must contain more than two character if there's below <2 it will throw error. what could be wrong.

Answer 1

Click: demo:db<>fiddle
You can use the ?| operator, which takes a jsonb array (your column in that case) and checks a text array if any elements are included:
SELECT
*
FROM
mytable
WHERE categories_id ?| '{5565bffd-b1c8-4556-ae5d-4bef61af48f5,5565bffd-cd78-4e6f-ae13-4bef61af48f5}'
If your categories_id is not of type json (which is what the error message says) but a simple text array, you can compare two text arrays directly using the && operator:
Click: demo:db<>fiddle
SELECT
*
FROM
mytable
WHERE categories_id && '{5565bffd-b1c8-4556-ae5d-4bef61af48f5,5565bffd-cd78-4e6f-ae13-4bef61af48f5}'

Answer 2

Your code seems to work fine so perhaps sqlfiddle is the problem.
Try changing the separator in the schema building part to / (instead of ;) and make sure you have the correct version for Postgresql. json_array_elements_text is not supported in 9.3 (you can use json_array_elements instead in this case).
Also skip the " in the select statement.
Look here http://sqlfiddle.com/#!17/918b75/1
There might be an error in your data. Perhaps categories_id is an empty string somewhere.
Try this to see the offending data if any.
do $$
declare
r record;
b boolean;
begin
for r in (select * from stores) loop
b:= arrayContain(r.categories_id::JSON,'["5565bffd-b1c8-4556-ae5d-4bef61af48f5","5565bffd-cd78-4e6f-ae13-4bef61af48f5"]') ;
end loop;
exception
when others
then raise notice '%,%',r,r.categories_id;
return;
end;
$$
Best regards.
Bjarni