In the shared plan index scan cost is very high (cost=0.56..696715.50 But Limit (cost=0.56..224.59 is very low and so on result cost Result (cost=224.59..224.60 rows=1 width=8) why it is so? Right now I will consider this query harmless as it…
I have one table, example: | ID | numbers | | -------- | -------- | | 1 | 200 | | 2 | 210 | | 3 | 320 | | 4 | 340 | | 5 | 360 |…
INSERT INTO "public"."catalog_element" ("id", "catalogue_id", "element_id", "weight") VALUES (1,100,1,0), (2,100,2,1), (3,100,3,2), (4,10,1,0), (5,10,5,0), (6,10,6,1), (7,100,7,1); Let say, we have a Postgres table of catalog *- to -* element matching rows that are weighted, like such id catalogue_id element_id weight 1…
I am working on a forum like website where I have to query list of categories along with its latest post in the given category. These are the table schemas create table forum_posts ( forum_post_id text not null unique, forum_post_name…
Postgresql ver 15 Let's say I have a list of values, e.g. ID alpha beta delta . . . and I wish to check for each value, whether such a value exists in every group that is partitioned in a…
I have a database on sporting events whose schema can be summarized like this: Teams -------- id name Events ------- id nickname date team_1 (links to teams.id) team_2 (links to teams.id) Plays ----- id event (links to events.id) <other details>…
DB-Fiddle CREATE TABLE sales ( id SERIAL PRIMARY KEY, event_date DATE, sales_volume INT ); INSERT INTO sales (event_date, sales_volume) VALUES ('2023-01-27', '900'), ('2023-02-28', '500'), ('2023-01-29', '100'), ('2023-01-30', '600'), ('2023-01-31', '450'), ('2023-02-25', '300'), ('2023-02-26', '250'), ('2023-02-27', '845'), ('2023-02-28', '520'), ('2023-03-26', '750'),…
I have an array['a', 'b', 'c'] Very simply I want to check whether all elements of the above array exist in a column say test of a table t. It would be best if the sql return boolean. Thanks.
I am have two entites, Coupon and discount, each coupon can have many discounts,and each discount can have only one discount. I need two create new discount and coupon from one request,request body look like this "title": "someTitle", "description": "someDesc",…
I am working on a pgsql function that calculates a score based on some logic. But one of the requirements is that a parameter after calculation should be in the range [100000, 9900000]. I can't figure out how to do…