if I have a query like the following:
INSERT INTO table (col1,col2,col3) VALUES (\'col1_value_1\', \'col2_value_1\', \'col3_value_1\'), (\'col1_value_2\', \'
If you define any column primary key aut_increment then it will automatically increase value start from 1, you don't need to define this column in insert query then it will automatically insert incremented value in primary key column.