You should check out this https://dev.mysql.com/doc/refman/5.7/en/alter-table.html. For your case it would be something like ... <看更多>

ALTER TABLE myTable ADD COLUMN (basePrice FLOAT(10,2) NULL); UPDATE myTable set basePrice = 0,9 * price; ALTER TABLE myTable MODIFY COLUMN ( ... ... <看更多>

... Table. - To add a column into an already created table; we take help of MySQL ALTER TABLE ADD Command. Basic Syntax: alter table tablename add ... ... <看更多>

Add new column to existing table in mysql | Sql tutorial. 27K views · 2 years ago ...more. United Top Tech. 11K. Subscribe. 11K subscribers. ... <看更多>

What is the fastest way to add a new column to an existing table in MySQL? I have tried ALTER TABLE tbl ADD COLUMN ... , but that takes quite a ... ... <看更多>

Use MySQL Workbench. You can right-click a table and select "Send to SQL Editor" --> "Create Statement". This way no table "properties" will be forgotten to ... ... <看更多>