[CALCITE-3587] RexBuilder may lose decimal fraction for creating literal with DECIMAL type

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.22.0
• Labels: pull-request-available
• Assignee: Wang Yanlin
• Reporter: Wang Yanlin
• Created: 11/Dec/19 08:18
• Updated: 06/Mar/20 04:35
• Resolved: 07/Jan/20 03:50

Description

this test

// RexBuilderTest
@Test public void testDecimal() {
final RelDataTypeFactory typeFactory =
new SqlTypeFactoryImpl(RelDataTypeSystem.DEFAULT);
final RelDataType type = typeFactory.createSqlType(SqlTypeName.DECIMAL, 4, 2);
final RexBuilder builder = new RexBuilder(typeFactory);
final RexLiteral literal = (RexLiteral) builder.makeLiteral(12.3, type, false);
Comparable value = literal.getValue();
assertThat(value.toString(), is("12.3"));
}

fails with message

java.lang.AssertionError: 
Expected: is "12.3"
     but: was "12"
Expected :12.3
Actual   :12

Issue Links

• links to: GitHub Pull Request #1654