How can i split column and group by in bigquery?











up vote
-2
down vote

favorite












I has a SQL code in Legacy SQL was worked,



but in Standard SQL was wrong,



got the response:



 Grouping by expressions of type ARRAY is not allowed


Is there any way can resolve ?



Here's my SQL code:



  select tag
from
(
select SPLIT(content_tag, ',') as tag
from `test.log`
)
group by tag









share|improve this question


















  • 1




    Please add an example of the input data and the expected result
    – Ary Jazz
    Nov 12 at 8:09










  • Take a look at the following question in stackoverflow, it might help you: BigQuery: error in SPLIT() returns
    – Mohammad Mohabbati
    Nov 12 at 8:41

















up vote
-2
down vote

favorite












I has a SQL code in Legacy SQL was worked,



but in Standard SQL was wrong,



got the response:



 Grouping by expressions of type ARRAY is not allowed


Is there any way can resolve ?



Here's my SQL code:



  select tag
from
(
select SPLIT(content_tag, ',') as tag
from `test.log`
)
group by tag









share|improve this question


















  • 1




    Please add an example of the input data and the expected result
    – Ary Jazz
    Nov 12 at 8:09










  • Take a look at the following question in stackoverflow, it might help you: BigQuery: error in SPLIT() returns
    – Mohammad Mohabbati
    Nov 12 at 8:41















up vote
-2
down vote

favorite









up vote
-2
down vote

favorite











I has a SQL code in Legacy SQL was worked,



but in Standard SQL was wrong,



got the response:



 Grouping by expressions of type ARRAY is not allowed


Is there any way can resolve ?



Here's my SQL code:



  select tag
from
(
select SPLIT(content_tag, ',') as tag
from `test.log`
)
group by tag









share|improve this question













I has a SQL code in Legacy SQL was worked,



but in Standard SQL was wrong,



got the response:



 Grouping by expressions of type ARRAY is not allowed


Is there any way can resolve ?



Here's my SQL code:



  select tag
from
(
select SPLIT(content_tag, ',') as tag
from `test.log`
)
group by tag






sql google-bigquery standard-sql legacy-sql






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share|improve this question










asked Nov 12 at 7:46









Allen

41




41








  • 1




    Please add an example of the input data and the expected result
    – Ary Jazz
    Nov 12 at 8:09










  • Take a look at the following question in stackoverflow, it might help you: BigQuery: error in SPLIT() returns
    – Mohammad Mohabbati
    Nov 12 at 8:41
















  • 1




    Please add an example of the input data and the expected result
    – Ary Jazz
    Nov 12 at 8:09










  • Take a look at the following question in stackoverflow, it might help you: BigQuery: error in SPLIT() returns
    – Mohammad Mohabbati
    Nov 12 at 8:41










1




1




Please add an example of the input data and the expected result
– Ary Jazz
Nov 12 at 8:09




Please add an example of the input data and the expected result
– Ary Jazz
Nov 12 at 8:09












Take a look at the following question in stackoverflow, it might help you: BigQuery: error in SPLIT() returns
– Mohammad Mohabbati
Nov 12 at 8:41






Take a look at the following question in stackoverflow, it might help you: BigQuery: error in SPLIT() returns
– Mohammad Mohabbati
Nov 12 at 8:41














3 Answers
3






active

oldest

votes

















up vote
0
down vote



accepted










I think you are missing the [SAFE_OFFSET(1)] in your query, This should work



SELECT SPLIT(content_tag, ',') [SAFE_OFFSET(1)] AS tag
FROM `test.log`
GROUP BY tag


Edited for format code.






share|improve this answer






























    up vote
    1
    down vote













    The legacy SQL query that you have provided will implicitly flatten the array returned from the SPLIT function, which is why it works. Using standard SQL, you need to be more explicit, however:



    select tag
    from `test.log`,
    UNNEST(SPLIT(content_tag, ',')) as tag
    group by tag





    share|improve this answer




























      up vote
      0
      down vote













      I am guessing you want something like this:



      select tag, count(*)
      from (select 'a b c' as tags union all
      select 'd c'
      ) `test.log` cross join
      unnest(split(tags, ' ')) tag
      group by tag
      order by count(*) desc;


      This will count the number of tags in the space delimited list of tags.






      share|improve this answer





















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        3 Answers
        3






        active

        oldest

        votes








        3 Answers
        3






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes








        up vote
        0
        down vote



        accepted










        I think you are missing the [SAFE_OFFSET(1)] in your query, This should work



        SELECT SPLIT(content_tag, ',') [SAFE_OFFSET(1)] AS tag
        FROM `test.log`
        GROUP BY tag


        Edited for format code.






        share|improve this answer



























          up vote
          0
          down vote



          accepted










          I think you are missing the [SAFE_OFFSET(1)] in your query, This should work



          SELECT SPLIT(content_tag, ',') [SAFE_OFFSET(1)] AS tag
          FROM `test.log`
          GROUP BY tag


          Edited for format code.






          share|improve this answer

























            up vote
            0
            down vote



            accepted







            up vote
            0
            down vote



            accepted






            I think you are missing the [SAFE_OFFSET(1)] in your query, This should work



            SELECT SPLIT(content_tag, ',') [SAFE_OFFSET(1)] AS tag
            FROM `test.log`
            GROUP BY tag


            Edited for format code.






            share|improve this answer














            I think you are missing the [SAFE_OFFSET(1)] in your query, This should work



            SELECT SPLIT(content_tag, ',') [SAFE_OFFSET(1)] AS tag
            FROM `test.log`
            GROUP BY tag


            Edited for format code.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Nov 12 at 9:02









            انعام الرحمٰن

            158112




            158112










            answered Nov 12 at 8:45









            Tamir Klein

            187




            187
























                up vote
                1
                down vote













                The legacy SQL query that you have provided will implicitly flatten the array returned from the SPLIT function, which is why it works. Using standard SQL, you need to be more explicit, however:



                select tag
                from `test.log`,
                UNNEST(SPLIT(content_tag, ',')) as tag
                group by tag





                share|improve this answer

























                  up vote
                  1
                  down vote













                  The legacy SQL query that you have provided will implicitly flatten the array returned from the SPLIT function, which is why it works. Using standard SQL, you need to be more explicit, however:



                  select tag
                  from `test.log`,
                  UNNEST(SPLIT(content_tag, ',')) as tag
                  group by tag





                  share|improve this answer























                    up vote
                    1
                    down vote










                    up vote
                    1
                    down vote









                    The legacy SQL query that you have provided will implicitly flatten the array returned from the SPLIT function, which is why it works. Using standard SQL, you need to be more explicit, however:



                    select tag
                    from `test.log`,
                    UNNEST(SPLIT(content_tag, ',')) as tag
                    group by tag





                    share|improve this answer












                    The legacy SQL query that you have provided will implicitly flatten the array returned from the SPLIT function, which is why it works. Using standard SQL, you need to be more explicit, however:



                    select tag
                    from `test.log`,
                    UNNEST(SPLIT(content_tag, ',')) as tag
                    group by tag






                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Nov 12 at 12:35









                    Elliott Brossard

                    15.9k21035




                    15.9k21035






















                        up vote
                        0
                        down vote













                        I am guessing you want something like this:



                        select tag, count(*)
                        from (select 'a b c' as tags union all
                        select 'd c'
                        ) `test.log` cross join
                        unnest(split(tags, ' ')) tag
                        group by tag
                        order by count(*) desc;


                        This will count the number of tags in the space delimited list of tags.






                        share|improve this answer

























                          up vote
                          0
                          down vote













                          I am guessing you want something like this:



                          select tag, count(*)
                          from (select 'a b c' as tags union all
                          select 'd c'
                          ) `test.log` cross join
                          unnest(split(tags, ' ')) tag
                          group by tag
                          order by count(*) desc;


                          This will count the number of tags in the space delimited list of tags.






                          share|improve this answer























                            up vote
                            0
                            down vote










                            up vote
                            0
                            down vote









                            I am guessing you want something like this:



                            select tag, count(*)
                            from (select 'a b c' as tags union all
                            select 'd c'
                            ) `test.log` cross join
                            unnest(split(tags, ' ')) tag
                            group by tag
                            order by count(*) desc;


                            This will count the number of tags in the space delimited list of tags.






                            share|improve this answer












                            I am guessing you want something like this:



                            select tag, count(*)
                            from (select 'a b c' as tags union all
                            select 'd c'
                            ) `test.log` cross join
                            unnest(split(tags, ' ')) tag
                            group by tag
                            order by count(*) desc;


                            This will count the number of tags in the space delimited list of tags.







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered Nov 12 at 12:33









                            Gordon Linoff

                            753k35287395




                            753k35287395






























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