Category: DBMS

I have an ‘imageposts’ table that I am doing a left join with a ‘users’ table so that if there is an image post it fetches the data for the user who has done that related image post. The two tables …

I am writing a RESTfull API with Spring boot using Maven Liquibase to manage migrations alongside MySQL 8 for the database. I have searched online (1,2, 3) but Liquibase is still generating “…

I have a scenario where I have a relationship between two tables. One being the step and the other being to know who is the next step. select * from cpo_workflow_step_control; Step entity: @Entity @…

I have 3 tables, for the sake of this exercise we’ll call them: Products, Price, and Discount. I’m trying to join Products and Price tables, only if the ProductID is found in Discount.ProductID (…

I’m trying to get familiar with using php and javascript together in a joomla template, but I’ve moved it to a local box (no joomla, just testing the files on their own) to try and make more sense of …

I’m inputting the following query using MySql 5.5.62, but getting an error message that the table is not updatable? SET @row_number = 0 > OK > Time: 0,064s UPDATE `tbl_a` t JOIN ( SELECT ( @…

in what is efficient to execute multiple queries: this with nextRowset() function to move over the queries $stmt = $db->query(“SELECT 1; SELECT 2;”); $info1 = $stmt->fetchAll(); $stmt-&…

In the table above table ‘sent’ I use, among other things, two fields: ‘opened’ and emailnumber. I’m looking for a mysql query that the people who opened email number 1 and/or email number 2 one or …

I have two tables. One with points and another is with polygons. How could I find which point inside of which polygon?

I am working on a project where I have to fetch data from database if the row count is greater than zero then show it otherwise don’t. But my query returning all rows. This is My Query SELECT d.id,…