Question

I recently decided to switch the company through which i get my hosting, so to move my old db into my new db, i have been trying to run this:

mysqldump --host=ipaddress --user=username --password=password db_name table_name | mysql -u username -ppassword -h new_url new_db_name

and this seemed to be working fine.. but because my database is so freaking massive, i would get time out errors in the middle of my tables. So i was wondering if there was any easy way to do a mysqldump on just part of my table.

I would assume the work flow will look something like this:

create temp_table
move rows from old_table where id>2,500,000 into temp_table
some how dump the temp table into the new db's table (which has the same name as old_table)

but i’m not exactly sure how to do those steps.

Answer 1

Add this --where="id>2500000" at the end of mysqldump command. ^{MySQL 5.1 Reference Manual}

In your case the mysqldump command would look like

mysqldump --host=ipaddress \
    --user=username \
    --password=password \
    db_name table_name \
    --where="id>2500000

If you dump twice. The second dump will contain table creation info. But next time you want to add the new rows only. So for second dump add --no-create-info option in mysqldump command line.