yanxinyi commented on a change in pull request #558: PHOENIX-5413: Fix union
all error when exists literal column type.
URL: https://github.com/apache/phoenix/pull/558#discussion_r310701796
##########
File path:
phoenix-core/src/test/java/org/apache/phoenix/compile/QueryCompilerTest.java
##########
@@ -2465,10 +2465,10 @@ public void testColumnProjectionUnionAll() throws
SQLException {
assertTrue(rowProj.getColumnProjector(1).getExpression().getMaxLength() == 20);
assertTrue(rowProj.getColumnProjector(2).getExpression().getDataType()
instanceof PVarchar);
-
assertTrue(rowProj.getColumnProjector(2).getExpression().getMaxLength() == 30);
+
assertTrue(rowProj.getColumnProjector(2).getExpression().getMaxLength() ==
null);
Review comment:
`/**
* @return the actual length of the column. For decimal, it would be its
precision. For char or
* varchar, it would be the maximum length as specified during schema
definition.
*/
Integer getMaxLength();
/**
* @return scale of a decimal number.
*/
Integer getScale();
`
I'm not sure about `getMaxLength` and `getScale` return `null` here, it
might be better to change the logic to return the actual number instead.
@swaroopak any input here?
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