HANA: Split string?

Question

Is there a way to split a string in HANA?

Something similar to the equivalent in SQL Server: SELECT * FROM dbo.fnSplitString('valueA,valueB', ',')

Solution 1

Try this,

Refer Here

CREATE PROCEDURE SPLIT_TEST(TEXT nvarchar(100))
AS
BEGIN
  declare _items nvarchar(100) ARRAY;
  declare _text nvarchar(100);
  declare _index integer;
  _text := :TEXT;
  _index := 1;

  WHILE LOCATE(:_text,',') > 0 DO
  _items[:_index] := SUBSTR_BEFORE(:_text,',');
  _text := SUBSTR_AFTER(:_text,',');
  _index := :_index + 1;
  END WHILE;
  _items[:_index] := :_text;

  rst = UNNEST(:_items) AS ("items");
  SELECT * FROM :rst;
END; 

CALL SPLIT_TEST('A,B,C,E,F')

Solution 2

Another way of splitting a string is with an outbound variable using table types:

CREATE TYPE UTIL_VARCHAR_LIST AS TABLE
(
    VarcharValue Varchar(5000)
);

CREATE PROCEDURE UTIL_SPLIT_STRING
(
    IN iv_split_string Varchar(5000),
    IN iv_split_character Varchar(1) DEFAULT ',',
    OUT ot_string_list UTIL_VARCHAR_LIST
) LANGUAGE SQLSCRIPT
AS
BEGIN
    DECLARE TEMP_STR VARCHAR(5000) := :iv_split_string || :iv_split_character;
    DECLARE OUT_VAR VARCHAR(5000) ARRAY;
    DECLARE POS INTEGER :=1;
    DECLARE FLAG INTEGER := 1;
    DECLARE LEFT_STR VARCHAR(5000);

    WHILE(LENGTH(:TEMP_STR) > 0 )
    DO
        LEFT_STR := SUBSTR_BEFORE (:TEMP_STR,:iv_split_character);
        TEMP_STR := SUBSTR_AFTER (:TEMP_STR,:LEFT_STR || :iv_split_character);
        OUT_VAR[POS] := LEFT_STR;
        POS := :POS + 1;
    END WHILE;

    ot_string_list = UNNEST(:OUT_VAR) AS ("VARCHARVALUE");
END;

Solution 3

Until the SP10, you need to create a function to SPLIT strings.

• If your need is get some char, you can use SUBSTR()

• On SP9 or later, you can work with REGEX