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https://issues.apache.org/jira/browse/FLINK-7759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16210815#comment-16210815
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ASF GitHub Bot commented on FLINK-7759:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4829#discussion_r145653182
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/batch/table/stringexpr/StringExpressionTest.scala
---
@@ -0,0 +1,51 @@
+/*
+ * 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.batch.table.stringexpr
+
+import org.apache.flink.table.expressions.{ExpressionParser, Literal,
UnresolvedFieldReference}
+import org.junit.{Assert, Test}
+
+class StringExpressionTest {
--- End diff --
I've converted the test into an expression test (extending
`ExpressionTestBase`) and moved it to `org.apache.flink.table.expressions`.
> Fix Bug that fieldName with Boolean prefix can't be parsed by
> ExpressionParser.
> -------------------------------------------------------------------------------
>
> Key: FLINK-7759
> URL: https://issues.apache.org/jira/browse/FLINK-7759
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: Ruidong Li
> Assignee: Ruidong Li
> Priority: Critical
> Fix For: 1.4.0
>
>
> just call {{ExpressionParser.parseExpression}} with a prefix equals "true" or
> "false"
> {{ExpressionParser.parseExpression("true_target")}} or
> {{ExpressionParser.parseExpression("falsex")}}
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