Mysql write limit?

Question

MySQL

Postgres definitely has a restriction on writing certain values ​​to a cell, i.e. e.g. disable writing in column 0000-00-00

Answer 1

www.mysql.ru/docs/gruber/mg18.html take a look here

Answer 2

when creating a table CHECK(condition):
to change an existing one:

ALTER [IGNORE] TABLE tbl_name
CHECK PARTITION {partition_names | ALL}

14.1.8 ALTER TABLE Syntax