__THIS__
placeholder as a proxy for the active table.
ft_sql_transformer(x, input.col = NULL, output.col = NULL, sql, ...)
spark_tbl
) coercable to a Spark DataFrame.input.col
and output.col
arguments, they are ignored -- this interface is done purely for
compatibility with sdf_mutate
.
Other feature transformation routines: ft_binarizer
,
ft_bucketizer
,
ft_discrete_cosine_transform
,
ft_elementwise_product
,
ft_index_to_string
,
ft_one_hot_encoder
,
ft_quantile_discretizer
,
ft_regex_tokenizer
,
ft_string_indexer
,
ft_tokenizer
,
ft_vector_assembler
,
sdf_mutate