0 - 1 of 1 tags for import wizard

hi , Currently by using BTEQ and Teradata SQL assitant I am able to insert records into a table.
But I want to update records in a table. I have more than 2000 records in a table and i have 200 records in a file
both contain a same Primary key column and if there is no match found i want to insert a new row in a table.