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https://issues.apache.org/jira/browse/CALCITE-709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18034171#comment-18034171
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weihua zhang commented on CALCITE-709:
--------------------------------------
the SQL statement (labeled as error1) has been supported. However, support for
the SQL statement (labeled as error2) and the following SQL statements is still
pending.
{code:sql}
SELECT E1.DEPTNO
FROM
EMP E1
WHERE
E1.SAL > (SELECT B1.COMM FROM BONUS B1 WHERE E1.ENAME = B1.ENAME LIMIT 2);
{code}
> 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
> Priority: Major
> Labels: pull-request-available, 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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