Weijun-H commented on code in PR #11969: URL: https://github.com/apache/datafusion/pull/11969#discussion_r1717036796
########## datafusion/functions-nested/src/map_extract.rs: ########## @@ -0,0 +1,170 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! [`ScalarUDFImpl`] definitions for map_extract functions. + +use arrow::array::ArrayRef; + +use arrow::datatypes::{DataType, Float64Type, Int64Type, UInt32Type}; +use arrow_array::{ + new_null_array, Array, ArrowPrimitiveType, MapArray, PrimitiveArray, StringArray, +}; +use datafusion_common::cast::{as_primitive_array, as_string_array}; +use datafusion_common::utils::get_map_entry_field; +use datafusion_common::{cast::as_map_array, exec_err, Result}; +use datafusion_expr::{ColumnarValue, ScalarUDFImpl, Signature, Volatility}; +use std::any::Any; + +use crate::utils::make_scalar_function; + +// Create static instances of ScalarUDFs for each function +make_udf_expr_and_func!( + MapExtract, + map_extract, + map key, + "Return a list containing the value for a given key or an empty list if the key is not contained in the map.", Review Comment: I forgot to update this doc. It is resolved now. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
