Simple ASCII slider visualization of two quantities and their relative ratio

slider.sql

/*
  Simple ASCII slider visualization of two quantities and their relative ratio
  eg */ select * from _slider(3,5); /*
  
*/
create function _slider(_left int, _right int, _glyphs text[] = '{-,|,-}')
  returns text as $$
    select
      repeat(_glyphs[1], _left)
      || _glyphs[2] ||
      repeat(_glyphs[3], _right)
$$ language sql immutable;