Updating data in a table for multiple records from a file using Import - forum topic by thisisKumar

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.
so, its a UPDATE else INSERT scenario for mutliple records from a file to database table.
 
Thanks,
Kumar