[jira] [Created] (CALCITE-4923) Expand "star" for NATURAL JOIN fails if some columns are filtered out by addToSelectList

["Aleksey Plekhanov (Jira)" <ji...@apache.org>]

Aleksey Plekhanov created CALCITE-4923:
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             Summary: Expand "star" for NATURAL JOIN fails if some columns are filtered out by addToSelectList
                 Key: CALCITE-4923
                 URL: https://issues.apache.org/jira/browse/CALCITE-4923
             Project: Calcite
          Issue Type: Bug
            Reporter: Aleksey Plekhanov


If all columns ("*") are requested and some table columns are filtered out by overridden {{SqlValidatorImpl.addToSelectList()}} method (for example, some system columns, which we don't want to show to user until it explicitly requests it) query with NATURAL JOIN and JOIN with USING fail on {{SqlValidatorImpl.expandStar()}} with error:
{noformat}
java.lang.ArrayIndexOutOfBoundsException: 7
	at com.google.common.collect.RegularImmutableList.get(RegularImmutableList.java:60)
	at org.apache.calcite.sql.validate.SqlValidatorImpl$Permute.permute(SqlValidatorImpl.java:7109)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.expandStar(SqlValidatorImpl.java:664)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:426)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4409)
	at org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3652)
{noformat}
Because {{Permute.permute()}} rely on columns count equality in {{selectItems}} and JOIN row type.



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