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https://issues.apache.org/jira/browse/CALCITE-5048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17507692#comment-17507692
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Ruben Q L commented on CALCITE-5048:
------------------------------------
If I am not mistaken, there are parts of the code inside Calcite which only
support literals (and not dynamic parameters) for LIMIT (and OFFSET).
RelDecorrelator seems to be one of them (but there might be others).
> Query crashes `not a literal` for dynamic parameter
> ---------------------------------------------------
>
> Key: CALCITE-5048
> URL: https://issues.apache.org/jira/browse/CALCITE-5048
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.29.0
> Reporter: Corvin Kuebler
> Priority: Major
>
> This query:
> {code:java}
> // Does not run
> @Test void testDynamicParameterLimit() {
> CalciteAssert.hr()
> .query("SELECT * FROM \"hr\".\"emps\" AS a " +
> "WHERE \"deptno\" = " +
> "(SELECT MAX(\"deptno\") " +
> "FROM \"hr\".\"emps\" AS b " +
> "WHERE a.\"empid\" = b.\"empid\"" +
> ") LIMIT ?")
> .runs();
> }{code}
> results in the following exception:
> {code:java}
> not a literal: ?0
> java.lang.AssertionError: not a literal: ?0
> at org.apache.calcite.rex.RexLiteral.findValue(RexLiteral.java:1208)
> at org.apache.calcite.rex.RexLiteral.intValue(RexLiteral.java:1183)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:481)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:568)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:711)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelate(RelDecorrelator.java:306)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateQuery(RelDecorrelator.java:230)
> at
> org.apache.calcite.tools.Programs$DecorrelateProgram.run(Programs.java:361)
> at
> org.apache.calcite.tools.Programs$SequenceProgram.run(Programs.java:336)
> at org.apache.calcite.prepare.Prepare.optimize(Prepare.java:177)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:312)
> at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:220){code}
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