Skip to content

    • Magic ETL

    Magic ETL

    MagicETL2 Filter issue?

    Contributor
    edited March 2021 in Magic ETL

    I have a filter in my dataflow:

    id NOT EQUAL value

    This filter removes all rows that have 'value', but it also seems to remove rows that have null in the 'id' field. Has anyone seen similar behavior in the Filter Rows ETL?

    Welcome!

    It looks like you're new here. Members get access to exclusive content, events, rewards, and more. Sign in or register to get started.
    Sign In

    Best Answer

    • Domo Employee
      Answer ✓

      If you are wanting to keep the NULL values, you may want to try adding two options to your filter card. NULL values do not play nicely when checking if they are equal to anything.

      In addition to the id NOT EQUAL value, try including

      id IS NULL

      Then set the filter rules to look for data that meet ANY rule.

    Answers

    • Domo Employee
      Answer ✓

      If you are wanting to keep the NULL values, you may want to try adding two options to your filter card. NULL values do not play nicely when checking if they are equal to anything.

      In addition to the id NOT EQUAL value, try including

      id IS NULL

      Then set the filter rules to look for data that meet ANY rule.

    • Contributor

      Thanks. Trying this now.

    • Contributor

      The answer above worked. Thank you.

    • Coach

      well... ok. to put more nuance on the answer

      if you read NULL as "I don't know" and you imagine that in your hand you have the value NULL. If you asked "does my hand NOT contain 7" you assume the answer is FALSE. because you don't know what's in your hand. it works the same way if you say "does my hand = 7" similarly the answer must be FALSE because you don't know what's in your hand.

      The only thing you know for sure, is that your hand IS NULL. (or IS NOT NULL) but if you test an explicit value you will always get FALSE

      Jae Wilson
      Check out my 🎥 Domo Training YouTube Channel 👨‍💻

      **Say "Thanks" by clicking the ❤️ in the post that helped you.
      **Please mark the post that solves your problem by clicking on "Accept as Solution"
    • Contributor

      BTW. My original version of this works in the original ETL tools, just not in ETL2.

    • Coach

      @mberkeley That is correct. There was a fundamental shift with ETL 2.0 to more align with SQL handling of NULLs which give consistency but can cause issues in dataflows when converting from ETL 1.0 -> ETL 2.0

      **Was this post helpful? Click Agree or Like below**
      **Did this solve your problem? Accept it as a solution!**

    Welcome!

    It looks like you're new here. Members get access to exclusive content, events, rewards, and more. Sign in or register to get started.
    Sign In

    Welcome!

    It looks like you're new here. Members get access to exclusive content, events, rewards, and more. Sign in or register to get started.
    Sign In

    Quick Links

    Categories