How to split multiple values from a row into separate rows?

Question

I want to split multiple values from a row into a separate row in sap hana sql. table :

 id  name
 1   kabil,arasan

but I want

Answer 1

1. try to avoid csv-like data in columns, e.g. normalize during ETL process
2. you can use a procedure, see [HANA: Split string?

3. without a procedure you can use the following SQL (restriction: it assumes a maximum number of values in your csv-field). I would use it only for adhoc purposes.

   CREATE COLUMN TABLE "TEST_SPLIT"(
       "SOME_KEY" VARCHAR(10),
       "CSV_STR" VARCHAR(1000) );
   
   INSERT INTO "TEST_SPLIT" ("SOME_KEY", "CSV_STR") VALUES ('1', 'hello world');
   INSERT INTO "TEST_SPLIT" ("SOME_KEY", "CSV_STR") VALUES ('2', 'one,two,three');
   INSERT INTO "TEST_SPLIT" ("SOME_KEY", "CSV_STR") VALUES ('3', NULL);
   
   Select * from 
   ( select "SOME_KEY" "KEY", "ELEMENT_NUMBER" "ORD", 
          SUBSTR_REGEXPR('(?<=^|,)([^,]*)(?=,|$)' IN "TEST_SPLIT"."CSV_STR" OCCURRENCE "SERIES"."ELEMENT_NUMBER" GROUP 1) "VAL"
     from "TEST_SPLIT",
          SERIES_GENERATE_INTEGER(1, 1, 10 ) "SERIES" -- replace 10 with your max. number of values in CSV-Field
   )
   where "VAL" is not null
   order by "KEY", "ORD"
   

   [1]: HANA: Split string?