twalthr commented on a change in pull request #11034: [FLINK-15802][table] Support new type inference for table functions URL: https://github.com/apache/flink/pull/11034#discussion_r378207216
########## File path: flink-table/flink-table-planner-blink/src/main/java/org/apache/calcite/sql/validate/ProcedureNamespace.java ########## @@ -0,0 +1,80 @@ +/* + * 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.calcite.sql.validate; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.table.planner.functions.utils.TableSqlFunction; + +import org.apache.calcite.rel.type.RelDataType; +import org.apache.calcite.sql.SqlCall; +import org.apache.calcite.sql.SqlCallBinding; +import org.apache.calcite.sql.SqlKind; +import org.apache.calcite.sql.SqlNode; +import org.apache.calcite.sql.SqlOperator; +import org.apache.calcite.sql.SqlUtil; +import org.apache.calcite.sql.type.SqlTypeName; + +/** + * Namespace whose contents are defined by the result of a call to a user-defined procedure. + * + * <p>Note: Compared to Calcite, this class implements custom logic for dealing with collection tables + * like {@code TABLE(function(...))} procedures. Compared to the SQL standard, Flink's table functions Review comment: Input fields might depend on a `LATERAL` keyword. But in any case, this JavaDoc and class is correctly describing the SQL standard "collection table". ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
