Impala - How to get the third to last occurrence of a character within a string










0















I've the following string:



SELECT '00000-AAA1-1111-BBBB1-010101-CCCC1' as Word
FROM Table_A


I have the above string I only want to extract the string between the third-to-last and the last occurence.



Basically, I want to extract the following string:



'BBBB1'


I was trying with that but it gives me the wrong result:



 substr(Word, 1, length(a.cod_system_shipment_detail) - length(reverse(split_part(reverse(Word),'|',1))))

"00000-AAA1-1111-BBBB1-010101-"


How can extract only BBBB1 from the above string?



Thanks!










share|improve this question






















  • it is not clear what you are expecting. what do you mean third to last and last occurrence? I would suggest add some additional explanation

    – hlagos
    Nov 14 '18 at 13:36











  • From "'00000-AAA1-1111-BBBB1-010101-CCCC1'" I want to extract BBBB1. Before 'BBBB1' we have 3 special characters and 2 after.

    – Pedro Alves
    Nov 14 '18 at 15:05











  • before bbbb1 I see "1111-" not sure what you mean by specifial characters

    – hlagos
    Nov 14 '18 at 15:08











  • special character: "-"

    – Pedro Alves
    Nov 14 '18 at 16:27















0















I've the following string:



SELECT '00000-AAA1-1111-BBBB1-010101-CCCC1' as Word
FROM Table_A


I have the above string I only want to extract the string between the third-to-last and the last occurence.



Basically, I want to extract the following string:



'BBBB1'


I was trying with that but it gives me the wrong result:



 substr(Word, 1, length(a.cod_system_shipment_detail) - length(reverse(split_part(reverse(Word),'|',1))))

"00000-AAA1-1111-BBBB1-010101-"


How can extract only BBBB1 from the above string?



Thanks!










share|improve this question






















  • it is not clear what you are expecting. what do you mean third to last and last occurrence? I would suggest add some additional explanation

    – hlagos
    Nov 14 '18 at 13:36











  • From "'00000-AAA1-1111-BBBB1-010101-CCCC1'" I want to extract BBBB1. Before 'BBBB1' we have 3 special characters and 2 after.

    – Pedro Alves
    Nov 14 '18 at 15:05











  • before bbbb1 I see "1111-" not sure what you mean by specifial characters

    – hlagos
    Nov 14 '18 at 15:08











  • special character: "-"

    – Pedro Alves
    Nov 14 '18 at 16:27













0












0








0








I've the following string:



SELECT '00000-AAA1-1111-BBBB1-010101-CCCC1' as Word
FROM Table_A


I have the above string I only want to extract the string between the third-to-last and the last occurence.



Basically, I want to extract the following string:



'BBBB1'


I was trying with that but it gives me the wrong result:



 substr(Word, 1, length(a.cod_system_shipment_detail) - length(reverse(split_part(reverse(Word),'|',1))))

"00000-AAA1-1111-BBBB1-010101-"


How can extract only BBBB1 from the above string?



Thanks!










share|improve this question














I've the following string:



SELECT '00000-AAA1-1111-BBBB1-010101-CCCC1' as Word
FROM Table_A


I have the above string I only want to extract the string between the third-to-last and the last occurence.



Basically, I want to extract the following string:



'BBBB1'


I was trying with that but it gives me the wrong result:



 substr(Word, 1, length(a.cod_system_shipment_detail) - length(reverse(split_part(reverse(Word),'|',1))))

"00000-AAA1-1111-BBBB1-010101-"


How can extract only BBBB1 from the above string?



Thanks!







impala substr






share|improve this question













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share|improve this question




share|improve this question










asked Nov 12 '18 at 10:49









Pedro AlvesPedro Alves

152111




152111












  • it is not clear what you are expecting. what do you mean third to last and last occurrence? I would suggest add some additional explanation

    – hlagos
    Nov 14 '18 at 13:36











  • From "'00000-AAA1-1111-BBBB1-010101-CCCC1'" I want to extract BBBB1. Before 'BBBB1' we have 3 special characters and 2 after.

    – Pedro Alves
    Nov 14 '18 at 15:05











  • before bbbb1 I see "1111-" not sure what you mean by specifial characters

    – hlagos
    Nov 14 '18 at 15:08











  • special character: "-"

    – Pedro Alves
    Nov 14 '18 at 16:27

















  • it is not clear what you are expecting. what do you mean third to last and last occurrence? I would suggest add some additional explanation

    – hlagos
    Nov 14 '18 at 13:36











  • From "'00000-AAA1-1111-BBBB1-010101-CCCC1'" I want to extract BBBB1. Before 'BBBB1' we have 3 special characters and 2 after.

    – Pedro Alves
    Nov 14 '18 at 15:05











  • before bbbb1 I see "1111-" not sure what you mean by specifial characters

    – hlagos
    Nov 14 '18 at 15:08











  • special character: "-"

    – Pedro Alves
    Nov 14 '18 at 16:27
















it is not clear what you are expecting. what do you mean third to last and last occurrence? I would suggest add some additional explanation

– hlagos
Nov 14 '18 at 13:36





it is not clear what you are expecting. what do you mean third to last and last occurrence? I would suggest add some additional explanation

– hlagos
Nov 14 '18 at 13:36













From "'00000-AAA1-1111-BBBB1-010101-CCCC1'" I want to extract BBBB1. Before 'BBBB1' we have 3 special characters and 2 after.

– Pedro Alves
Nov 14 '18 at 15:05





From "'00000-AAA1-1111-BBBB1-010101-CCCC1'" I want to extract BBBB1. Before 'BBBB1' we have 3 special characters and 2 after.

– Pedro Alves
Nov 14 '18 at 15:05













before bbbb1 I see "1111-" not sure what you mean by specifial characters

– hlagos
Nov 14 '18 at 15:08





before bbbb1 I see "1111-" not sure what you mean by specifial characters

– hlagos
Nov 14 '18 at 15:08













special character: "-"

– Pedro Alves
Nov 14 '18 at 16:27





special character: "-"

– Pedro Alves
Nov 14 '18 at 16:27












1 Answer
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1














If you want to split by - and get the third element, you can do it as follow



SELECT split_part('00000-AAA1-1111-BBBB1-010101-CCCC1', '-',4);





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    1 Answer
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    active

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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1














    If you want to split by - and get the third element, you can do it as follow



    SELECT split_part('00000-AAA1-1111-BBBB1-010101-CCCC1', '-',4);





    share|improve this answer



























      1














      If you want to split by - and get the third element, you can do it as follow



      SELECT split_part('00000-AAA1-1111-BBBB1-010101-CCCC1', '-',4);





      share|improve this answer

























        1












        1








        1







        If you want to split by - and get the third element, you can do it as follow



        SELECT split_part('00000-AAA1-1111-BBBB1-010101-CCCC1', '-',4);





        share|improve this answer













        If you want to split by - and get the third element, you can do it as follow



        SELECT split_part('00000-AAA1-1111-BBBB1-010101-CCCC1', '-',4);






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 16 '18 at 1:39









        hlagoshlagos

        3,5681817




        3,5681817



























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