yanjing.wang created CALCITE-4541:
-------------------------------------
Summary: group by numerical literal will collide with group by
ordinal in default sql validator
Key: CALCITE-4541
URL: https://issues.apache.org/jira/browse/CALCITE-4541
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.26.0
Environment: open-jdk8
Reporter: yanjing.wang
Fix For: 1.27.0
{code:java}
String sql = "select 20210101 as ds , count(distinct id) as c from users where
ds = 20210101 group by ds";
{code}
'group by ds' expression will be expanded to 'group by 20210101' at line
'expandGroupByOrHavingExpr' of 'validateGroupClause(SqlSelect select)' method.
but when GroupByScope 'validateExpr(SqlNode expr)', it will check if 'group by
20210101' is a group by ordinal literal such as 'group by 1, 2' etc. . and in
'visit(SqlLiteral literal)' method of 'ExtendedExpander' class does this.
the problem raises when check if it is a 'group by ordinal', it only has a
condition
{code:java}
boolean isOrdinalLiteral = literal == root;
{code}
this is always true in this scenario.
it raise exception 'SqlValidatorException: Ordinal out of range when executing
following code.
{code:java}
if (intValue < 1 || intValue > select.getSelectList().size()) { throw
validator.newValidationError(literal, RESOURCE.orderByOrdinalOutOfRange());
}{code}
I think if we need check 'originalExprs' instance variable of sqlValidatorImpl
class contains the literal. if so, it can be verified as not an ordinal. but
I'm not sure whether this approach is correct.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
