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Posted to dev@calcite.apache.org by "Julian Hyde (Jira)" <ji...@apache.org> on 2022/06/02 22:58:00 UTC
[jira] [Created] (CALCITE-5178) Scalar subquery in scalar subquery generates plan that will not compile
Julian Hyde created CALCITE-5178:
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Summary: Scalar subquery in scalar subquery generates plan that will not compile
Key: CALCITE-5178
URL: https://issues.apache.org/jira/browse/CALCITE-5178
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Scalar subquery in scalar subquery generates plan that will not compile. Example:
{code:java}
> select (select (1, 2));
Error: Error while executing SQL "select (select (1, 2))": Error while compiling generated Java code:
...
public static class Record2_3 implements java.io.Serializable {
public boolean f0;
public Object[] f1;
...
}
java.util.List accumulatorAdders = new java.util.LinkedList();
accumulatorAdders.add(new org.apache.calcite.linq4j.function.Function2() {
public Record2_3 apply(Record2_3 acc, Record2_1 in) {
if (acc.f0) {
throw new IllegalStateException(
"more than one value in agg SINGLE_VALUE");
}
acc.f0 = true;
acc.f1 = in;
return acc;
}
public Record2_3 apply(Object acc, Object in) {
return apply(
(Record2_3) acc,
(Record2_1) in);
}
}
);
...
{code}
Note the line {{acc.f1 = in;}} is attempting to assign a {{Record2_1}} value to a {{Object[]}} field.
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