Leonard Xu created FLINK-14030: ---------------------------------- Summary: Nonequivalent conversion happens in Table planner Key: FLINK-14030 URL: https://issues.apache.org/jira/browse/FLINK-14030 Project: Flink Issue Type: Bug Components: Table SQL / Planner Affects Versions: 1.9.0 Reporter: Leonard Xu Fix For: 2.0.0
~testAllApis()~ unit tests will run fail because planner make a conversion from ~[ifThenElse(isNull(plus(f0, f1)), 'null', 'not null')]~ to ~[CASE(OR(IS NULL($0), IS NULL($1)), _UTF-16LE'null', _UTF-16LE'not null')]~ which is not a equivalence conversion. The result of expression 'f0 + 'f1 should be null when the result overflows even if its two operands both are not null. It's easy to reproduce as following: ^testAllApis( 'f0 + 'f1, "f1 + f1", "f1 + f1", "null")// the result should be null because overflow override def testData: Row = { val testData = new Row(2) testData.setField(0, BigDecimal("1e10").bigDecimal) testData.setField(1, BigDecimal("0").bigDecimal) testData } override def typeInfo: RowTypeInfo = { new RowTypeInfo( /* 0 */ fromLogicalTypeToTypeInfo(DECIMAL(38, 10)), /* 1 */ fromLogicalTypeToTypeInfo(DECIMAL(38, 28)) ) }^ -- This message was sent by Atlassian Jira (v8.3.2#803003)