SQL LOAD

I'm having some difficulty using LOAD or DBLOAD. Here's my problem. I have a data file with 2 columns, | delimited, that I want to load/update into the database. My statement reads... load from "data.file" insert into database (column#1, column#2) wherecolumnX = columnX It's the "where columnX = columnX" that's giving me the trouble. I just can't add the data to the end of the file, I need to update the database with the "data.file" columns. Any help or suggestions would be GREEATTLY appreciated!