Export MySQL tables into CSV/PSV/TSV format

CSV:

mysql my_db -e "SELECT * FROM my_table" | sed 's/\t/","/g;s/^/"/;s/$/"/;' > my_db.my_table.csv

PSV:

mysql my_db -e "SELECT * FROM my_table" | sed 's/\t/|/g' > my_db.my_table.psv

TSV:

mysql my_db -e "SELECT * FROM my_table" > my_db.my_table.tsv