Solve wordpress invalid default value sql

When trying to copy tables in phpmyadmin, I got this error:

Invalid default value for post_modified

To solve it:

• Open mysql
• use the proper database
• run these code snippets

SET SQL_MODE = '';
ALTER TABLE `wp_posts` CHANGE `post_date` `post_date` DATETIME  NOT NULL  DEFAULT '1970-01-01 00:00:00';
ALTER TABLE `wp_posts` CHANGE `post_date_gmt` `post_date_gmt` DATETIME  NOT NULL  DEFAULT '1970-01-01 00:00:00';
ALTER TABLE `wp_posts` CHANGE `post_modified` `post_modified` DATETIME  NOT NULL  DEFAULT '1970-01-01 00:00:00';
ALTER TABLE `wp_posts` CHANGE `post_modified_gmt` `post_modified_gmt` DATETIME  NOT NULL  DEFAULT '1970-01-01 00:00:00';

• copy now works

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