CREATE TABLE 'gpkgext_symbol_images' (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  symbol_id INTEGER NOT NULL,
  content_id INTEGER NOT NULL,
  width INTEGER,
  height INTEGER,
  offset_x INTEGER,
  offset_y INTEGER,
  pixel_ratio INTEGER,
  CONSTRAINT symbol_id_fk FOREIGN KEY (symbol_id) REFERENCES gpkgext_symbols(id),
  CONSTRAINT content_id_fk FOREIGN KEY (content_id) REFERENCES gpkgext_symbol_content(id)
);
