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https://issues.apache.org/jira/browse/CALCITE-709?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde updated CALCITE-709:
--------------------------------
    Labels: sub-query  (was: )

> Errors with LIMIT inside scalar sub-query
> -----------------------------------------
>
>                 Key: CALCITE-709
>                 URL: https://issues.apache.org/jira/browse/CALCITE-709
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Assignee: Julian Hyde
>              Labels: sub-query
>
> Various when you use LIMIT inside a scalar sub-query.
> Error 1:
> {code}select deptno, (select empno 
>     from "scott".emp
>     where deptno = dept.deptno
>     order by empno limit 1) as x
> from "scott".dept;{code}
> gives {code}java.sql.SQLException: error while executing SQL "select deptno, 
> (select empno from "scott".emp where deptno = dept.deptno order by empno 
> limit 1) as x from "scott".dept
> ": Error while compiling generated Java code:
> Caused by: org.codehaus.commons.compiler.CompileException: Line 65, Column 
> 49: Not a boolean expression{code}
> Error 2:
> {code}select deptno, (select sum(empno)
>     from "scott".emp
>     where deptno = dept.deptno
>     limit 0) as x
> from "scott".dept;{code}
> gives {code}java.sql.SQLException: error while executing SQL "select deptno, 
> (select sum(empno) from "scott".emp where deptno = dept.deptno limit 0) as x 
> from "scott".dept
> Target must be less than target count, 2
>       at org.apache.calcite.avatica.Helper.createException(Helper.java:41)
>       at 
> org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:112)
>       at 
> org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:130)
>       at 
> net.hydromatic.quidem.Quidem$CheckResultCommand.execute(Quidem.java:690)
>       at 
> net.hydromatic.quidem.Quidem$CompositeCommand.execute(Quidem.java:926)
>       at net.hydromatic.quidem.Quidem.execute(Quidem.java:193)
>       at org.apache.calcite.test.JdbcTest.checkRun(JdbcTest.java:4402)
>       at org.apache.calcite.test.JdbcTest.testRunScalar(JdbcTest.java:4370)
> Caused by: java.lang.IllegalArgumentException: Target must be less than 
> target count, 2
>       at 
> org.apache.calcite.util.mapping.Mappings$PartialFunctionImpl.set(Mappings.java:1607)
>       at org.apache.calcite.util.mapping.Mappings.target(Mappings.java:323)
>       at 
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:401)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at 
> org.apache.calcite.util.ReflectUtil.invokeVisitorInternal(ReflectUtil.java:256)
>       at 
> org.apache.calcite.util.ReflectUtil.invokeVisitor(ReflectUtil.java:213)
>       at 
> org.apache.calcite.util.ReflectUtil$1.invokeVisitor(ReflectUtil.java:476)
>       at 
> org.apache.calcite.sql2rel.RelDecorrelator$DecorrelateRelVisitor.visit(RelDecorrelator.java:1421)
>       at org.apache.calcite.rel.BiRel.childrenAccept(BiRel.java:47){code}
> The test cases are included in scalar.oq, commented out usind '!if (false) 
> ...'; you can run via JdbcTest.testRunScalar.



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