I have such MySQL code: SELECT departmentId, name, salary, DENSE_RANK() OVER (PARTITION BY departmentId ORDER BY salary DESC) AS salary_rank FROM Employee HAVING departmentId = 1 This works properly as expected but if I change the HAVING clause as SELECT…
I have a very large table (over a TB space) in a postgres db and it has a text column which is also large causing TOASTING in the db. When I try do drop the column it times out after…
Somewhat of an amateur here: I moved a wordpress site from one host to another. This involved me backing up the old site, and uploading all of the material from the wp_content folder into the wordpress installation on the new…
I recently restored a WordPress website backup using Hostinger's hosting platform. After completing the restoration process, I noticed that all my custom CSS added in the WordPress Additional CSS section was missing. This caused the website's appearance to change significantly…
I have database on Hpanel and its limit has been exceed I have try to repair and optimize but it was not helpful enter image description here I have tried to repair and optimize the database also clear the cache…
In contrast to CHAR, VARCHAR values are stored as a 1-byte or 2-byte length prefix plus data. The length prefix indicates the number of bytes in the value. A column uses one length byte if values require no more than…
I am trying to implement an appointment manager for a dentist office. Thing is I am not sure how to properly implement such function. Right now I have managed to create these two tables that will handle it: CREATE TABLE…
I’m building a to-do app in React with a Node.js/Express backend and PostgreSQL as my database. The app allows users to add, edit, and delete tasks, which are stored in the database. The problem I’m facing is with editing tasks:…
I'm doing this StrataScratch SQL question. The suggested solution uses two subqueries for each max value of each department, and then it substracts them to get the absolute value. I wanted to solve this question using dense_rank/rank window function by…
I'm working with PostgreSQL and using pg_export_snapshot() to create a snapshot in one transaction, which I then import into another transaction using SET TRANSACTION SNAPSHOT. I noticed that PostgreSQL requires the original (exporting) transaction to stay active while the snapshot…