HanumathRao commented on code in PR #3640:
URL: https://github.com/apache/calcite/pull/3640#discussion_r1499616372
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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"
+ + "integer, item_col1 integer, item_col2 integer, item_col3\n"
+ + "integer,item_col4 integer )");
+ baseStmt.execute("INSERT INTO invoice VALUES (1, 1, 1)");
+ baseStmt.execute("INSERT INTO invoice VALUES (2, 2, 2)");
+ baseStmt.execute("INSERT INTO invoice VALUES (3, 3, 3)");
+ baseStmt.execute("INSERT INTO item values (1, 1, 1, 1, 1, 1)");
+ baseStmt.execute("INSERT INTO item values (2, 2, 2, 2, 2, 2)");
+ baseStmt.close();
+ baseConnection.commit();
+
+ Properties info = new Properties();
+ info.put("model",
+ "inline:"
+ + "{\n"
+ + " version: '1.0',\n"
+ + " defaultSchema: 'BASEJDBC',\n"
+ + " schemas: [\n"
+ + " {\n"
+ + " type: 'jdbc',\n"
+ + " name: 'BASEJDBC',\n"
+ + " jdbcDriver: '" + jdbcDriver.class.getName() + "',\n"
+ + " jdbcUrl: '" + hsqldbMemUrl + "',\n"
+ + " jdbcCatalog: null,\n"
+ + " jdbcSchema: null\n"
+ + " }\n"
+ + " ]\n"
+ + "}");
+
+ Connection calciteConnection =
+ DriverManager.getConnection("jdbc:calcite:", info);
+
+ String statement = "SELECT Sum(invoice.inv_amt * (\n"
Review Comment:
Thank you, @jinfengni, for your review. While it's possible to reproduce the
issue with the current schema, I opted to employ the same test case to ensure
its resolution. Please inform me if you'd like to include this test case
alongside the one I've added (although it may be redundant).
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