Comma delimited string to individual rows - Impala SQL

问题

Let's suppose we have a table:

Owner   | Pets
------------------------------
Jack    | "dog, cat, crocodile" 
Mary    | "bear, pig"

I want to get as a result:

Owner   | Pets
------------------------------
Jack    | "dog"
Jack    | "cat"
Jack    | "crocodile" 
Mary    | "bear"
Mary    | "pig"

I found some solutions to similar problems by googling, but Impala SQL does not offer any of these capabilities to apply the suggested solutions.

Any help would be greatly appreciated!

回答1:

The following works in Impala:

split_part(string source, string delimiter, bigint n)

You can find the documentation here:

https://www.cloudera.com/documentation/enterprise/5-9-x/topics/impala_string_functions.html

来源：https://stackoverflow.com/questions/37399187/comma-delimited-string-to-individual-rows-impala-sql