GetVersion return sqly command version.

InitSQLite3 registers the sqlite3 driver.

NewArg return *Arg that is assigned the result of parsing os.Args.

NewConfig return *Config.

NewHistoryDB create *sql.DB for history.

NewInMemDB create *sql.DB for SQLite3.

ErrEmptyArg is argument for NewArg() is empty.

Stderr is new instance of Writer which handles escape sequence for stderr.

Stdout is new instance of Writer which handles escape sequence for stdout.

Version is sqly command version.

Arg is a structure for managing options and arguments.

Config is sqly configuration.

Output is configuration for output data to file.