Sergey Nuyanzin created CALCITE-4811:
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Summary: Coalesce(null, row) fails with NPE
Key: CALCITE-4811
URL: https://issues.apache.org/jira/browse/CALCITE-4811
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.27.0
Reporter: Sergey Nuyanzin
Case to reproduce
{code:sql}
select coalesce(null, row(1));
{code}
This and other similar queries fail with
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java.sql.SQLException: Error while executing SQL "select coalesce(null,
row(1))": null
at org.apache.calcite.avatica.Helper.createException(Helper.java:56)
at org.apache.calcite.avatica.Helper.createException(Helper.java:41)
at
org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:163)
at
org.apache.calcite.avatica.AvaticaStatement.execute(AvaticaStatement.java:217)
at sqlline.Commands.executeSingleQuery(Commands.java:1130)
at sqlline.Commands.execute(Commands.java:1079)
at sqlline.Commands.sql(Commands.java:1033)
at sqlline.SqlLine.dispatch(SqlLine.java:822)
at sqlline.SqlLine.begin(SqlLine.java:596)
at sqlline.SqlLine.start(SqlLine.java:269)
at sqlline.SqlLine.main(SqlLine.java:208)
Caused by: java.lang.NullPointerException
at
org.apache.calcite.rel.type.RelDataTypeImpl.getFieldCount(RelDataTypeImpl.java:175)
at
org.apache.calcite.rel.type.RelDataTypeFactoryImpl.leastRestrictiveStructuredType(RelDataTypeFactoryImpl.java:228)
at
org.apache.calcite.sql.type.SqlTypeFactoryImpl.leastRestrictiveSqlType(SqlTypeFactoryImpl.java:292)
at
org.apache.calcite.sql.type.SqlTypeFactoryImpl.leastRestrictive(SqlTypeFactoryImpl.java:160)
at
org.apache.calcite.sql.fun.SqlCaseOperator.inferTypeFromValidator(SqlCaseOperator.java:263)
at
org.apache.calcite.sql.fun.SqlCaseOperator.inferReturnType(SqlCaseOperator.java:225)
at
org.apache.calcite.sql.SqlOperator.validateOperands(SqlOperator.java:502)
at
org.apache.calcite.sql.fun.SqlCaseOperator.deriveType(SqlCaseOperator.java:172)
at
org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:6277)
at
org.apache.calcite.sql.validate.SqlValidatorImpl$DeriveTypeVisitor.visit(SqlValidatorImpl.java:6264)
at org.apache.calcite.sql.SqlCall.accept(SqlCall.java:161)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.deriveTypeImpl(SqlValidatorImpl.java:1862)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.deriveType(SqlValidatorImpl.java:1847)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.inferUnknownTypes(SqlValidatorImpl.java:2019)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.expandSelectItem(SqlValidatorImpl.java:461)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelectList(SqlValidatorImpl.java:4409)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.validateSelect(SqlValidatorImpl.java:3652)
at
org.apache.calcite.sql.validate.SelectNamespace.validateImpl(SelectNamespace.java:64)
at
org.apache.calcite.sql.validate.AbstractNamespace.validate(AbstractNamespace.java:89)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.validateNamespace(SqlValidatorImpl.java:1100)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.validateQuery(SqlValidatorImpl.java:1071)
at org.apache.calcite.sql.SqlSelect.validate(SqlSelect.java:247)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.validateScopedExpression(SqlValidatorImpl.java:1046)
at
org.apache.calcite.sql.validate.SqlValidatorImpl.validate(SqlValidatorImpl.java:752)
at
org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:585)
at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:251)
at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:215)
at
org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:647)
at
org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:513)
at
org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:483)
at
org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:249)
at
org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:623)
at
org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675)
at
org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
... 8 more
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