jinfengni commented on code in PR #3640:
URL: https://github.com/apache/calcite/pull/3640#discussion_r1499577112
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core/src/test/java/org/apache/calcite/test/JdbcTest.java:
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@@ -8270,6 +8270,75 @@ private void checkGetTimestamp(Connection con) throws
SQLException {
.returns("EXPR$0=[1, 1.1]\n");
}
+ /** Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-6032";>[CALCITE-6032]
+ * NullPointerException in Reldecorrelator for a Multi level correlated
subquery</a>. */
+ @Test void testMultiLevelDecorrelation() throws Exception {
+ String hsqldbMemUrl = "jdbc:hsqldb:mem:.";
+ Connection baseConnection = DriverManager.getConnection(hsqldbMemUrl);
+ Statement baseStmt = baseConnection.createStatement();
+ baseStmt.execute("create table invoice (inv_id integer, col1\n"
+ + "integer, inv_amt integer)");
+ baseStmt.execute("create table item(item_id integer, item_amt\n"
Review Comment:
Will it be better to use some existing table/schemas to reproduce this
problem? For instance, the `hr` or `foodmart` schema?
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