Github user andrewor14 commented on a diff in the pull request: https://github.com/apache/spark/pull/12117#discussion_r58466044 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/command/functions.scala --- @@ -0,0 +1,109 @@ +/* + * 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. + */ + +package org.apache.spark.sql.execution.command + +import org.apache.spark.sql.{AnalysisException, Row, SQLContext} +import org.apache.spark.sql.catalyst.FunctionIdentifier +import org.apache.spark.sql.catalyst.catalog.CatalogFunction +import org.apache.spark.sql.catalyst.expressions.ExpressionInfo + + +/** + * The DDL command that creates a function. + * alias: the class name that implements the created function. + * resources: Jars, files, or archives which need to be added to the environment when the function + * is referenced for the first time by a session. + * isTemp: indicates if it is a temporary function. --- End diff -- can you follow the javadoc format of the other commands, something like: ``` * ... * The syntax of using this command in SQL is: * {{{ * SHOW FUNCTIONS [LIKE pattern] * }}} ```
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