Hi, I would need to put the results of dynamic SELECT queries into a single JSON. Eg. if I have SELECT a, b, c FROM mytable, I want it to transform it to a single payload {"a": xxx, "b": xxx, "c": xxx} As I don't know the query in advance, I can't create a Table to insert into. I'm using the Table API (tableEnv.executeSql(selectQuery)). Should I use the internal API as is done in the SQL gateway ?