Re: How to concatenate rows into a single column in hana view

Hi,

I used the below table struture, data and query to concatenate distinct values of Status for an Order.

DROP TABLE <SCHEMA_NAME>.CONCAT_COLUMN ;

CREATE COLUMN TABLE <SCHEMA_NAME>.CONCAT_COLUMN

(ORDER_ID INTEGER,STATUS VARCHAR(1));

INSERT INTO <SCHEMA_NAME>.CONCAT_COLUMN

SELECT 1,'A' FROM DUMMY

UNION ALL SELECT 1,'B' FROM DUMMY

UNION ALL SELECT 1,'C' FROM DUMMY

UNION ALL SELECT 1,'C' FROM DUMMY

UNION ALL SELECT 2,'D' FROM DUMMY

UNION ALL SELECT 2,'E' FROM DUMMY

UNION ALL SELECT 3,'F' FROM DUMMY

UNION ALL SELECT 1,'A' FROM DUMMY

UNION ALL SELECT 1,'B' FROM DUMMY

UNION ALL SELECT 1,'C' FROM DUMMY

UNION ALL SELECT 1,'C' FROM DUMMY

UNION ALL SELECT 2,'D' FROM DUMMY

UNION ALL SELECT 2,'E' FROM DUMMY

UNION ALL SELECT 3,'F' FROM DUMMY;

SELECT * FROM <SCHEMA_NAME>.CONCAT_COLUMN;

Below query provides the required result:

SELECT ORDER_ID,STRING_AGG(STATUS,',') AS ORDER_STATUS

FROM

  (SELECT DISTINCT ORDER_ID,STATUS FROM <SCHEMA_NAME>.CONCAT_COLUMN)

GROUP BY ORDER_ID;

Query Result:

ORDER_ID;ORDER_STATUS

1;A,B,C

2;D,E

3;F

Regards,

Sunny