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https://issues.apache.org/jira/browse/FLINK-9713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16614759#comment-16614759
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ASF GitHub Bot commented on FLINK-9713:
---------------------------------------
twalthr commented on a change in pull request #6299: [FLINK-9713][table][sql]
Support processing time versioned joins
URL: https://github.com/apache/flink/pull/6299#discussion_r217686794
##########
File path:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/stream/table/validation/TemporalTableJoinValidationTest.scala
##########
@@ -0,0 +1,124 @@
+/*
+ * 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.flink.table.api.stream.table.validation
+
+import java.sql.Timestamp
+
+import org.apache.flink.api.scala._
+import org.apache.flink.table.api.{TableException, ValidationException}
+import org.apache.flink.table.api.scala._
+import org.apache.flink.table.utils._
+import org.junit.Test
+
+class TemporalTableJoinValidationTest extends TableTestBase {
+
+ val util: TableTestUtil = streamTestUtil()
+
+ val orders = util.addTable[(Long, String, Timestamp)](
+ "Orders", 'o_amount, 'o_currency, 'o_rowtime.rowtime)
+
+ val ordersProctime = util.addTable[(Long, String)](
+ "OrdersProctime", 'o_amount, 'o_currency, 'o_rowtime.proctime)
+
+ val ordersWithoutTimeAttribute = util.addTable[(Long, String, Timestamp)](
+ "OrdersWithoutTimeAttribute", 'o_amount, 'o_currency, 'o_rowtime)
+
+ val ratesHistory = util.addTable[(String, Int, Timestamp)](
+ "RatesHistory", 'currency, 'rate, 'rowtime.rowtime)
+
+ val ratesHistoryWithoutTimeAttribute = util.addTable[(String, Int,
Timestamp)](
+ "ratesHistoryWithoutTimeAttribute", 'currency, 'rate, 'rowtime)
+
+ @Test
+ def testInvalidFieldReference(): Unit = {
+ expectedException.expect(classOf[ValidationException])
+ expectedException.expectMessage("Cannot resolve field [foobar]")
+
+ ratesHistory.createTemporalTableFunction('rowtime.rowtime, 'foobar)
+ }
+
+ @Test
+ def testInvalidStringFieldReference(): Unit = {
+ expectedException.expect(classOf[ValidationException])
+ expectedException.expectMessage("Cannot resolve field [foobar]")
+
+ ratesHistory.createTemporalTableFunction("rowtime", "foobar")
+ }
+
+ @Test
+ def testNonTimeIndicatorOnRightSide(): Unit = {
+ expectedException.expect(classOf[ValidationException])
+ expectedException.expectMessage(
+ "Non rowtime timeAttribute [TIMESTAMP(3)] used to create
TemporalTableFunction")
+
+ val rates =
ratesHistoryWithoutTimeAttribute.createTemporalTableFunction('rowtime,
'currency)
Review comment:
This exception occurs very late during optimization. I'm wondering if we
should perform the basic check a bit earlier, even though this check could have
false positives.
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> Support versioned joins in planning phase
> -----------------------------------------
>
> Key: FLINK-9713
> URL: https://issues.apache.org/jira/browse/FLINK-9713
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Affects Versions: 1.5.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Major
> Labels: pull-request-available
>
> Queries like:
> {code:java}
> SELECT
> o.amount * r.rate
> FROM
> Orders AS o,
> LATERAL TABLE (Rates(o.rowtime)) AS r
> WHERE o.currency = r.currency{code}
> should evaluate to valid plan with versioned joins plan node.
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