database - Revert backup table data to original table SQL -

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i have created backup country table.

create table country_bkp select * country;

what sql should use restore country table it's original state? can do

insert country select * country_bkp;

but have duplicate entries , fail primary key same .

is there sql command merge data back?

last alternative be

drop table country; create table country select * country_bkp;

but want avoid grants/permissions lost this.

other cleaner way be

delete country ; insert country select * country_bkp;

but looking more of merge approach without having clear data original table.

instead of dropping table, which, noted, lose permission defitions, truncate remove data, , insert-select old data:

truncate table country; insert country select * county_bkp;

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