mysql - should I add new table to store new field in zencart db? -

mysql - should I add new table to store new field in zencart db? -

should add together new table store new field in zencart db? zencart original table

table : customers customers_id | ... 1 | ... 2 | ...

now need add together new field client create new table

table : customers_extra customers_id | is_blogger 1 | 0 2 | 1

or straight created in customers table

table: customers customers_id | ... | is_blogger 1 | ... | 0 2 | ... | 1

which method should utilize ? add together new table worth ? slow downwards query speed?

i add together on customers table. it's lot less work way. , no, won't experience slowdown adding 1 character field table this.

mysql zen-cart