julianhyde commented on a change in pull request #2757:
URL: https://github.com/apache/calcite/pull/2757#discussion_r838886885
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File path:
core/src/test/java/org/apache/calcite/sql/test/SqlPrettyWriterTest.java
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@@ -438,6 +441,30 @@ private SqlPrettyWriterFixture tableDotStar() {
.check();
}
+ /** Test case for
+ * <a
href="https://issues.apache.org/jira/browse/CALCITE-4401";>[CALCITE-4401]
+ * SqlJoin toString throws RuntimeException</a>. */
+ @Test void testJoinClauseToString() throws SqlParseException {
+ final String sql = "SELECT t.region_name, t0.o_totalprice\n"
+ + "FROM (SELECT c_custkey, region_name\n"
+ + "FROM tpch.out_tpch_vw__customer) AS t\n"
+ + "INNER JOIN (SELECT o_custkey, o_totalprice\n"
+ + "FROM tpch.out_tpch_vw__orders) AS t0 ON t.c_custkey = t0.o_custkey";
+
+ final SqlNode node = SqlParser.create(sql).parseQuery();
+ final SqlSelect select = (SqlSelect) node;
+ final SqlJoin join = (SqlJoin) select.getFrom();
+
+ final String expectedJoinString = "SELECT *\r\n"
+ + "FROM (SELECT `C_CUSTKEY`, `REGION_NAME`\r\n"
+ + "FROM `TPCH`.`OUT_TPCH_VW__CUSTOMER`) AS `T`\r\n"
+ + "INNER JOIN (SELECT `O_CUSTKEY`, `O_TOTALPRICE`\r\n"
+ + "FROM `TPCH`.`OUT_TPCH_VW__ORDERS`) AS `T0` ON `T`.`C_CUSTKEY` =
`T0`.`O_CUSTKEY`";
+
+ assert join != null;
+ Assertions.assertEquals(join.toString(), expectedJoinString);
+ }
+
Review comment:
I think you will need to extend the fixture.
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