I am trying to replace multiple whitespaces from a column in Redshift(Postgres) Query used : Select replace(col_name,' ',' ') from table; above query is not working for multiple whitespaces only. I have tried replacing other characters in the same query,…
Trying to create a conditional unique index in postgresql but unable to do so and getting this error Query 1 ERROR: ERROR: cannot use subquery in index predicate LINE 3: WHERE ( ^ this is how my query looks like…
I'm creating a school sql system and have this table planning: Note that i have almost the same tables for students and professor, it only differs by course column. Is there a way to create like a unique users table…
How to order by timestamp and group based on score Entities starting with a prefix (say a1 are similar), but we need to pickup the one with the highest score, in this case a1-1 For a2 it should pickup a2-1,…
I have around 5k products in my store and I wonder if there is a way via PhpMyAdmin or any other plugin you might know to set all my stock levels from variables products to 0 due to the fact…
Let's say I have a student table like this: ID Name Major Gender 1 Alice Math F 2 Bob Biology M 3 Candice Econ F And I have a list of data like this: names=["Alice,"Bob","Candice"] majors=["Math","Biology","Econ"] genders="["F","M","F"] I want to…
I have got the following Postgres table: create table test ( id serial, contract varchar, amount0 int, amount1 int, price double precision ); I would like to insert 100 rows of dummy data that conforms to the following: – In…
I have two tables, organization and address. organization table has an address_id column but all the rows have address_id set to NULL. I want to SET address_id in organization table equal to a random id in address table but I…
CREATE TABLE t (STUDENT int, SCORE int, DATE date) ; INSERT INTO t (STUDENT, SCORE, DATE) VALUES (1, 6, '2022-02-01 00:00:00'), (1, 2, '2022-03-12 00:00:00'), (1, 5, '2022-04-30 00:00:00'), (2, 2, '2022-04-12 00:00:00'), (2, 0, '2022-04-17 00:00:00'), (2, 7, '2022-05-08…
I am trying 8weeksqlchallenge, and I usually work with MySQL and the error codes are quite cleaner there, but not so much on dbfiddle.com This is my schema CREATE SCHEMA dannys_diner; SET search_path = dannys_diner; CREATE TABLE sales ( "customer_id"…