fhueske commented on a change in pull request #6741: [FLINK-9712][table,docs] Document processing time Temporal Table Joins URL: https://github.com/apache/flink/pull/6741#discussion_r221981230
########## File path: docs/dev/table/streaming/joins.md ########## @@ -0,0 +1,104 @@ +--- +title: "Joins in Continuous Queries" +nav-parent_id: streaming_tableapi +nav-pos: 3 +--- +<!-- +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. +--> + +When we have two tables that we want to connect such operation can usually be expressed via some kind of join. +In batch processing joins can be efficiently executed, since we are working on a bounded completed data sets. +In stream processing things are a little bit more complicated, Review comment: However, joining dynamic tables(link to dynamic tables) is more complicated because the input of the join operator and its result are continuously changing. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
