LISTAGG equivalent in Teradata

问题

Is there any equivalent of Listagg function of oracle in teradata. With recursive is an option I have tried, but wanted something other than.

Thanks Aritra

回答1:

If Teradata's XML-services are installed (default since 14.10?) there's a function named XMLAGG, e.g.

SELECT DatabaseName, TABLENAME, 
   TRIM(TRAILING ',' FROM (XMLAGG(TRIM(Columnname)|| ',' ORDER BY ColumnId) (VARCHAR(10000))))
FROM dbc.ColumnsV
WHERE databasename = 'dbc' 
  AND TABLENAME = 'ColumnsV'
GROUP BY 1,2

来源：https://stackoverflow.com/questions/29510654/listagg-equivalent-in-teradata