Question: How can I import a  csv file with the first row having the column names? I want to disregard the first line 

Answer: Use the HEADER parameter. The HEADER parameter according to the documentation "Specifies that the file contains a header line with the names of each column in the file" 

This is an example of a COPY which  copies the data from the csv file into the table. The HEADER parameter will force the COPY action to disregard the fist line on input 

COPY myschema.myTable(col1,col2,col3) FROM '/tmp/myfile1.csv' DELIMITER ',' CSV HEADER;