I've created a table that has two columns: both varchars for numbers. My text file also has two columns, separated by commas.

Here's the command I'm using (italics used to distinguish from syntax):

COPY *table_name*
FROM '*/C:/Users/username/Desktop/filename.txt*' 
DELIMITER ',' CSV;

I'm getting this error: ERROR: "COPY FROM 'filename'..." not currently supported

Everywhere I read says that I need to use the COPY FROM command, yet the error says it's not supported. I've tried changing forward slashes to backslashes and double backslashes as well.