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ASF GitHub Bot commented on FLINK-3579: --------------------------------------- Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/1821#discussion_r57698940 --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/expressions/ExpressionParser.scala --- @@ -116,7 +118,18 @@ object ExpressionParser extends JavaTokenParsers with PackratParsers { atom <~ ".cast(BOOL)" ^^ { e => Cast(e, BasicTypeInfo.BOOLEAN_TYPE_INFO) } | atom <~ ".cast(BOOLEAN)" ^^ { e => Cast(e, BasicTypeInfo.BOOLEAN_TYPE_INFO) } | atom <~ ".cast(STRING)" ^^ { e => Cast(e, BasicTypeInfo.STRING_TYPE_INFO) } | - atom <~ ".cast(DATE)" ^^ { e => Cast(e, BasicTypeInfo.DATE_TYPE_INFO) } + atom <~ ".cast(DATE)" ^^ { e => Cast(e, BasicTypeInfo.DATE_TYPE_INFO) } | + // When an integer is directly casted. + atom <~ "cast(BYTE)" ^^ { e => Cast(e, BasicTypeInfo.BYTE_TYPE_INFO) } | + atom <~ "cast(SHORT)" ^^ { e => Cast(e, BasicTypeInfo.SHORT_TYPE_INFO) } | + atom <~ "cast(INT)" ^^ { e => Cast(e, BasicTypeInfo.INT_TYPE_INFO) } | + atom <~ "cast(LONG)" ^^ { e => Cast(e, BasicTypeInfo.LONG_TYPE_INFO) } | + atom <~ "cast(FLOAT)" ^^ { e => Cast(e, BasicTypeInfo.FLOAT_TYPE_INFO) } | + atom <~ "cast(DOUBLE)" ^^ { e => Cast(e, BasicTypeInfo.DOUBLE_TYPE_INFO) } | + atom <~ "cast(BOOL)" ^^ { e => Cast(e, BasicTypeInfo.BOOLEAN_TYPE_INFO) } | + atom <~ "cast(BOOLEAN)" ^^ { e => Cast(e, BasicTypeInfo.BOOLEAN_TYPE_INFO) } | + atom <~ "cast(STRING)" ^^ { e => Cast(e, BasicTypeInfo.STRING_TYPE_INFO) } | + atom <~ "cast(DATE)" ^^ { e => Cast(e, BasicTypeInfo.DATE_TYPE_INFO) } --- End diff -- this rule was already added at the top of the list > Improve String concatenation > ---------------------------- > > Key: FLINK-3579 > URL: https://issues.apache.org/jira/browse/FLINK-3579 > Project: Flink > Issue Type: Bug > Components: Table API > Reporter: Timo Walther > Assignee: ramkrishna.s.vasudevan > Priority: Minor > > Concatenation of a String and non-String does not work properly. > e.g. {{f0 + 42}} leads to RelBuilder Exception > ExpressionParser does not like {{f0 + 42.cast(STRING)}} either. -- This message was sent by Atlassian JIRA (v6.3.4#6332)