Question

I have the table step_year: id, step_id, year

I want to duplicate all rows that have year = 1011 (select * from step_year where year = 1011), but instead of those newly created rows having the same year (1011) I want to change it to 1112.

Any help is appreciated.

Answer 1

You can do the INSERT based on a SELECT but specify the year instead of pulling it from the query

INSERT INTO `step_year` (`id`, `step_id`, `year`)
SELECT `id`, `step_id`, 1112 AS `year` 
FROM `step_year` where `year` = 1011

This syntax is for MySQL, but should be adaptable to most databases.