Hi all,
I'm hoping to be able to change the column names when creating a table from
a datastream, the flatmap function generating the stream is returning a
Tuple4.
It's currently working as follows:
inputmetrics = table_env.from_data_stream(ds, Schema.new_builder()
.column("f0", "BIGINT")
.column("f1", "STRING")
.column("f2", "STRING")
.column("f3", "DOUBLE")
.build())
I'm trying to rename the columns f0, f1, f2, f3 to proper names e.g.
timestamp, device, name, value. So far I've tried using from_fields, and
column_by_expression("timestamp", "f0")
I'd prefer not to change the output type of my previous flatMapFunction (to
say a named Row) for performance purposes.
Thanks,
Francis
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