Postgres 12

By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.

Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.

create table specialist (to_cd text, empid text, code int, booking_status text, availability text);

CREATE TABLE


CREATE OR REPLACE FUNCTION insert_testdata( spec jsonb)
     RETURNS void
LANGUAGE plpgsql
AS $BODY$
begin
  --Consider all columns in specialist table as character varying and code column as integer.
  insert into specialist (to_cd, empid, code, booking_status, availability)
  select j.spec->>'to_cd', 
         j.spec->>'empid', 
         (j.spec->>'code')::int, 
         j.spec->>'booking_status', 
         j.spec->>'availability' 
  from jsonb_array_elements(spec) as j(spec);
end;
$BODY$;


CREATE FUNCTION


select insert_testdata('[
                              {"to_cd":"NFG",
                               "empid":"test",
                               "code":123,
                               "booking_status": "Y",
                               "availability":"MTWTFSS"},
                              {"to_cd":"CFG",
                               "empid":"test2",
                               "code": 456,
                               "booking_status": "N",
                               "availability":"MT"}
                            ]'::jsonb);


insert_testdata






SELECT 1


select *
from specialist;


to_cd
empid
code
booking_status
availability


NFG
test
123
Y
MTWTFSS

CFG
test2
456
N
MT



SELECT 2