Category "create-table"

SQL - Generate column from sum of columns from different table

I have two tables: The first one contains numeral values, it looks like this: The id column is the primary key; it has the attribute AUTO_INCREMENT. All col

Update on Duplicate key with two columns to check mysql

I am trying to get my head around the 'On Duplicate Key' mysql statement. I have the following table: id (primary key autoincr) / server id (INT) / member id (I

Mysql set default value to a json type column

I heard that mysql version prior to 8.0.13 accept default value for json type column, so I using the cmd: ALTER TABLE templates CHANGE COLUMN values JSON NOT N