mysqldump , create table if not exists

//=== http://stackoverflow.com/questions/8603182/how-to-update-table-if-table-exists-with-mysql-dump

mysqldump -uadmin -p > dump.sql

DROP TABLE IF EXISTS `employees`;

CREATE TABLE `employees` (
`major` int(11) NOT NULL DEFAULT '0',
...
)


how to change it to
IF TABLE EXISTS, UPDATE IT ???




//=== http://stackoverflow.com/questions/2220469/create-table-if-not-exists-from-mysqldump

* first dump containing table definitions (--no-data --skip-add-drop-table)
* second dump with only data (--no-create-info --skip-add-drop-table)



$ sed -i 's/CREATE TABLE/CREATE TABLE IF NOT EXISTS/g' dump_schema.sql