Key of the schema, which will be the key of Tensor
in result Table
.
Key of the schema, which will be the key of Tensor
in result Table
.
So, it should be unique
in single RowTransformer
.
Transforming Logic of the Schema
Transforming Logic of the Schema
values of selected columns
StructFields of selected columns
a result Tensor
This property will override indices
when it is not empty.
FieldNames
of Selected ColumnsThis property will override indices
when it is not empty.
It will work on only when fieldNames
is empty,
otherwise RowTransformer
will select columns accord to fieldNames
.
Indices
of Selected ColumnsIt will work on only when fieldNames
is empty,
otherwise RowTransformer
will select columns accord to fieldNames
.
If both indices
and fieldNames
are empty,
RowTransformer
will select all columns by default.
A
schema
describe a transforming job which convert aRow
to aTable
(Tensor
).