How to Fill blank Fields with other column QGIS

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
2
down vote

favorite












I have two columns of the same data and I want to unite



for example I have the column "pole_type" and "pole_type_"
and sometimes one has values and some times the other



like seen in the photo



enter image description here



I want to get all the values in "pole_type_" into "pole_type" so I can delete the first



Iv'e used so far the following rules but not succeeded



IF(NULL,"pole_type_","pole_type")


or



IF("pole_type='',"pole_type_","pole_type")


and so on
but I havn't came up with anything that works.






qgis field-calculator






share

















  • 1




    Assuming empty are blank, not NULL (your second example), try adding a second = and remove the space : IF("pole_type"=="","pole_type_","pole_type")
    – smiller
    55 mins ago











  • Are you able to perform a selection of your data (outside of the calculator) for either blank or NULL? An example of selecting for NULL is here: gis.stackexchange.com/questions/16134
    – smiller
    52 mins ago










  • In the screenshots your column is called "/_pole_type" (with an underscore at the start) but your formulas use "pole_type_" (with an underscore at the end).
    – csk
    32 mins ago















up vote
2
down vote

favorite












I have two columns of the same data and I want to unite



for example I have the column "pole_type" and "pole_type_"
and sometimes one has values and some times the other



like seen in the photo



enter image description here



I want to get all the values in "pole_type_" into "pole_type" so I can delete the first



Iv'e used so far the following rules but not succeeded



IF(NULL,"pole_type_","pole_type")


or



IF("pole_type='',"pole_type_","pole_type")


and so on
but I havn't came up with anything that works.






qgis field-calculator






share

















  • 1




    Assuming empty are blank, not NULL (your second example), try adding a second = and remove the space : IF("pole_type"=="","pole_type_","pole_type")
    – smiller
    55 mins ago











  • Are you able to perform a selection of your data (outside of the calculator) for either blank or NULL? An example of selecting for NULL is here: gis.stackexchange.com/questions/16134
    – smiller
    52 mins ago










  • In the screenshots your column is called "/_pole_type" (with an underscore at the start) but your formulas use "pole_type_" (with an underscore at the end).
    – csk
    32 mins ago













up vote
2
down vote

favorite









up vote
2
down vote

favorite











I have two columns of the same data and I want to unite



for example I have the column "pole_type" and "pole_type_"
and sometimes one has values and some times the other



like seen in the photo



enter image description here



I want to get all the values in "pole_type_" into "pole_type" so I can delete the first



Iv'e used so far the following rules but not succeeded



IF(NULL,"pole_type_","pole_type")


or



IF("pole_type='',"pole_type_","pole_type")


and so on
but I havn't came up with anything that works.






qgis field-calculator






share













I have two columns of the same data and I want to unite



for example I have the column "pole_type" and "pole_type_"
and sometimes one has values and some times the other



like seen in the photo



enter image description here



I want to get all the values in "pole_type_" into "pole_type" so I can delete the first



Iv'e used so far the following rules but not succeeded



IF(NULL,"pole_type_","pole_type")


or



IF("pole_type='',"pole_type_","pole_type")


and so on
but I havn't came up with anything that works.






qgis field-calculator




qgis field-calculator





share












share










share



share










asked 1 hour ago









tristramit

657




657







  • 1




    Assuming empty are blank, not NULL (your second example), try adding a second = and remove the space : IF("pole_type"=="","pole_type_","pole_type")
    – smiller
    55 mins ago











  • Are you able to perform a selection of your data (outside of the calculator) for either blank or NULL? An example of selecting for NULL is here: gis.stackexchange.com/questions/16134
    – smiller
    52 mins ago










  • In the screenshots your column is called "/_pole_type" (with an underscore at the start) but your formulas use "pole_type_" (with an underscore at the end).
    – csk
    32 mins ago













  • 1




    Assuming empty are blank, not NULL (your second example), try adding a second = and remove the space : IF("pole_type"=="","pole_type_","pole_type")
    – smiller
    55 mins ago











  • Are you able to perform a selection of your data (outside of the calculator) for either blank or NULL? An example of selecting for NULL is here: gis.stackexchange.com/questions/16134
    – smiller
    52 mins ago










  • In the screenshots your column is called "/_pole_type" (with an underscore at the start) but your formulas use "pole_type_" (with an underscore at the end).
    – csk
    32 mins ago








1




1




Assuming empty are blank, not NULL (your second example), try adding a second = and remove the space : IF("pole_type"=="","pole_type_","pole_type")
– smiller
55 mins ago





Assuming empty are blank, not NULL (your second example), try adding a second = and remove the space : IF("pole_type"=="","pole_type_","pole_type")
– smiller
55 mins ago













Are you able to perform a selection of your data (outside of the calculator) for either blank or NULL? An example of selecting for NULL is here: gis.stackexchange.com/questions/16134
– smiller
52 mins ago




Are you able to perform a selection of your data (outside of the calculator) for either blank or NULL? An example of selecting for NULL is here: gis.stackexchange.com/questions/16134
– smiller
52 mins ago












In the screenshots your column is called "/_pole_type" (with an underscore at the start) but your formulas use "pole_type_" (with an underscore at the end).
– csk
32 mins ago





In the screenshots your column is called "/_pole_type" (with an underscore at the start) but your formulas use "pole_type_" (with an underscore at the end).
– csk
32 mins ago











2 Answers
2






active

oldest

votes

















up vote
3
down vote













Welcome to the wonders of COALESCE. Try this:



COALESCE( "pole_type_" , "pole_type" )



It will return the first non-null value in a list. If they are all null, it will return null.






share|improve this answer



























    up vote
    0
    down vote













    You can use:



    CASE
    WHEN "pole_type" IS NULL THEN "pole_type_"
    ELSE "pole_type"
    END






    share|improve this answer




















      Your Answer







      StackExchange.ready(function()
      var channelOptions =
      tags: "".split(" "),
      id: "79"
      ;
      initTagRenderer("".split(" "), "".split(" "), channelOptions);

      StackExchange.using("externalEditor", function()
      // Have to fire editor after snippets, if snippets enabled
      if (StackExchange.settings.snippets.snippetsEnabled)
      StackExchange.using("snippets", function()
      createEditor();
      );

      else
      createEditor();

      );

      function createEditor()
      StackExchange.prepareEditor(
      heartbeatType: 'answer',
      convertImagesToLinks: false,
      noModals: false,
      showLowRepImageUploadWarning: true,
      reputationToPostImages: null,
      bindNavPrevention: true,
      postfix: "",
      onDemand: true,
      discardSelector: ".discard-answer"
      ,immediatelyShowMarkdownHelp:true
      );



      );













       

      draft saved


      draft discarded


















      StackExchange.ready(
      function ()
      StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f300048%2fhow-to-fill-blank-fields-with-other-column-qgis%23new-answer', 'question_page');

      );

      Post as a guest

















      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes








      up vote
      3
      down vote













      Welcome to the wonders of COALESCE. Try this:



      COALESCE( "pole_type_" , "pole_type" )



      It will return the first non-null value in a list. If they are all null, it will return null.






      share|improve this answer
























        up vote
        3
        down vote













        Welcome to the wonders of COALESCE. Try this:



        COALESCE( "pole_type_" , "pole_type" )



        It will return the first non-null value in a list. If they are all null, it will return null.






        share|improve this answer






















          up vote
          3
          down vote










          up vote
          3
          down vote









          Welcome to the wonders of COALESCE. Try this:



          COALESCE( "pole_type_" , "pole_type" )



          It will return the first non-null value in a list. If they are all null, it will return null.






          share|improve this answer












          Welcome to the wonders of COALESCE. Try this:



          COALESCE( "pole_type_" , "pole_type" )



          It will return the first non-null value in a list. If they are all null, it will return null.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 50 mins ago









          Hayden Elza

          1436




          1436






















              up vote
              0
              down vote













              You can use:



              CASE
              WHEN "pole_type" IS NULL THEN "pole_type_"
              ELSE "pole_type"
              END






              share|improve this answer
























                up vote
                0
                down vote













                You can use:



                CASE
                WHEN "pole_type" IS NULL THEN "pole_type_"
                ELSE "pole_type"
                END






                share|improve this answer






















                  up vote
                  0
                  down vote










                  up vote
                  0
                  down vote









                  You can use:



                  CASE
                  WHEN "pole_type" IS NULL THEN "pole_type_"
                  ELSE "pole_type"
                  END






                  share|improve this answer












                  You can use:



                  CASE
                  WHEN "pole_type" IS NULL THEN "pole_type_"
                  ELSE "pole_type"
                  END







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 24 mins ago









                  Bhekani Khumalo

                  112




                  112



























                       

                      draft saved


                      draft discarded















































                       


                      draft saved


                      draft discarded














                      StackExchange.ready(
                      function ()
                      StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f300048%2fhow-to-fill-blank-fields-with-other-column-qgis%23new-answer', 'question_page');

                      );

                      Post as a guest
































































                      Comments

                      Post a Comment

                      Popular posts from this blog

                      Long meetings (6-7 hours a day): Being “babysat” by supervisor

                      Image
                      Clash Royale CLAN TAG #URR8PPP .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty margin-bottom:0; up vote 31 down vote favorite 4 I hold a PhD in mechanical engineering with a 7 year background in self-guided, self-paced research including 2 years as a graduate level course instructor and a subject matter expert for various engineering projects in a university setting in the United States. For the last 10-11 months, I am working in a research industry in France where my task is to debug C++ spaghetti code written over a period of several years by my current supervisor. It is a team of 2: just I and my supervisor. Diurnally, I am posed with a "bug of the day" to get out of this C++ code. My supervisor generally gives me about 15-30 minutes to solve it and then accosts me about whether or not the task is completed and then rinses and repeats this until the end of the day. Off-late, my supervisor has been holding 6-7 hour long "meetin
                      Read more

                      Is the Concept of Multiple Fantasy Races Scientifically Flawed? [closed]

                      Image
                      Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite Many fantasy worlds have multiple humanoid species (elves, orcs, humans, etc) living in the same world, in addition to that, they often have the ability to interbreed. And I can't help but question their believability... fantasy-races reproduction interspecies-relations share | improve this question edited Aug 9 at 14:46 Michael Kjörling ♦ 21.1k 10 85 161 asked Aug 9 at 13:13 Chlodio 118 6 closed as unclear what you're asking by MichaelK, Gryphon, John, Vincent, Frostfyre Aug 9 at 15:25 Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question. 3 Stack Exchange exist to
                      Read more

                      Confectionery

                      Image
                      Prepared foods made with a lot of sugar or other cabohydrates "Sweetmeat" redirects here. For the racehorse, see Sweetmeat (horse). Not to be confused with Sweetbread. This Kransekake is a traditional Scandinavian baker's confection. Confectionery is the art of making confections , which are food items that are rich in sugar and carbohydrates. Exact definitions are difficult. [1] In general, though, confectionery is divided into two broad and somewhat overlapping categories, bakers' confections and sugar confections. [2] Bakers' confectionery, also called flour confections , includes principally sweet pastries, cakes, and similar baked goods. Sugar confectionery includes candies ( sweets in British English), candied nuts, chocolates, chewing gum, bubble gum, pastillage, and other confections that are made primarily of sugar. In some cases, chocolate confections (confections made of chocolate) are treated as a separate category, as are sugar-free versions of
                      Read more