hello i need some help with indexes. Pretty new to this so sorry if this seems stupid. i created ta

hello i need some help with indexes. Pretty new to this so sorry if this seems stupid.

i created table

  CREATE TABLE IF NOT EXISTS ProductData (
      id INTEGER PRIMARY KEY AUTOINCREMENT,
      url TEXT,
      price NUMBER,
      description TEXT
  )

then i created index

  'CREATE INDEX IF NOT EXISTS idx_url ON ProductData (price, description)'


when i query table i get same numbers of row read as without index.

SELECT * FROM ProductData


What am i doing wrong?
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