MySql TIMESTAMP column is auto updated. Why?

Question

I have a table created with this SQL:

CREATE TABLE `test_table` (
  `id` BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  `data` TEXT,
  `timestamp` TIMESTAMP
)         


        

Answer 1

If you want that to your timestamp will be not added automatically ON UPDATE you have to define it like this

CREATE TABLE `test_table` (
   ...
   `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ...