Remove all zero dates from MySQL database across all Tables

Question

I have plenty of tables in MySQL which which contains zero date in dateTime column 0000-00-00 00:00:00

Using some sort of admin settings, Is it possibl

Answer 1

Alter your Table as

ALTER TABLE `test_table`
  CHANGE COLUMN `created_dt` `created_dt` date NOT NULL DEFAULT '1900-01-01';

but before Altering table you need to update the existing value as juergen d said

update test_table
set created_dt= '1900-01-01'
where created_dt= '0000-00-00'