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Editorial Team
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Asked: 2026-05-26T22:46:35+00:00

How to avoid inserting duplicate data? I only want to insert data that does

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How to avoid inserting duplicate data? I only want to insert data that does not already exist. I have written following queries but its not working properly. I’m using PostgreSQL.

title_exits = cursor.execute ("SELECT title,pageid FROM movie_movie WHERE title = %s AND pageid = %s;",(title,pageid))
    if title_exits == 0:
        cursor.execute("INSERT INTO movie_movie (title,pageid,slug,language) values (%s,%s,%s,%s);",(title,pageid,slug,id))
    db.commit()

Update: I tried result = cursor.fetchone ("SELECT count(*) FROM movie_movie WHERE title = %s AND pageid = %s;",(title,pageid)). But I’m getting error message. TypeError: fetchone() takes not arugments (2 given).

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1 Answer

  1. Editorial Team

    Answer related to your update:

    You should use “%” symbol instead comma:

    result = cursor.fetchone ("SELECT count(*) FROM movie_movie WHERE title = %s AND pageid = %s;" % (title,pageid))

    update

    as @no_freedom said in comments, think better approach would be

    result = cursor.fetchone ("SELECT count(*) FROM movie_movie WHERE title = :1 AND pageid = :2", [title,pageid])

    But i’m not sure, just try it.

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