I have a CSV file with 10 columns. After creating a PostgreSQL table with 4 columns, I want to copy some of 10 columns into the table.
the columns of my CSV table are like:
x1 x2 x3 x4 x5 x6 x7 x8 x9 x10
the columns of my PostgreSQL table should be like:
x2 x5 x7 x10