SQLite define output field separator on a single line command
The -separator option does what you want:
sqlite3 -separator ';;;' con.db "SELECT ..."The only way to format the output so that you are guaranteed to not get the separator in the values is to quote all strings:
sqlite3 con.db "SELECT quote(name), quote(cell), quote(email) FROM contacts"However, this would require you to parse the output according to the SQL syntax rules.