I have a select query return and it shows the result like below:
select * from table gives the result like below
I have parameter called Apple If I pass the parameter somewhere in query I should get the result like below
How to get this in postgresql. If anyone knows please share the answer below.
I would do this with a helper function for clarity. And it might be reusable.
create or replace function filter_jsonb_array(arr jsonb, fruit text)
returns jsonb language sql immutable as
$$
select coalesce
(
(select jsonb_agg(j) from jsonb_array_elements(arr) j where j ->> 'fruit' = fruit),
'[]'::jsonb
);
$$;
and then
select "Column_A", "Column_B", filter_jsonb_array("Column_JSONARRAY", 'Apple') from table_;
If you do not want a function then the function body can be placed directly into the select query.
select
"Column_A",
"Column_B",
coalesce
(
(select jsonb_agg(j) from jsonb_array_elements("Column_JSONARRAY") j where j ->> 'fruit' = 'Apple'),
'[]'::jsonb
) "Column_JSONARRAY"
from table_;
= any((select array_agg(t) from jsonb_array_elements_text(j->'fruit') t)::text[]). It will only work if fruit is an array.where lower('Mango') = any((select array_agg(lower(t)) from jsonb_array_elements_text(j->'fruit') t)::text[])Considering your datatype of column Column_JSONARRAY is JSONB, try This:
with cte as (
SELECT column_a, column_b, (column_jsonarray ->> ( index_-1 )::int)::jsonb AS "column_jsonarray"
FROM table_
CROSS JOIN jsonb_array_elements(column_jsonarray)
WITH ORDINALITY arr(array_,index_)
WHERE array_->>'fruit' in ('Apple')
)
select t1.column_a, t1.column_b, jsonb_agg(t2.column_jsonarray)
from table_ t1
left join cte t2 on t1.column_a =t2.column_a and t1.column_b =t2.column_b
group by t1.column_a, t1.column_b
