rubenada commented on code in PR #3480:
URL: https://github.com/apache/calcite/pull/3480#discussion_r1371257262
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core/src/test/java/org/apache/calcite/test/enumerable/EnumerableRepeatUnionTest.java:
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@@ -45,6 +45,17 @@
*/
class EnumerableRepeatUnionTest {
+ @Test void testGenerateNumbersUsingSql() {
+ CalciteAssert.that()
+ .query("WITH RECURSIVE delta(n) AS (\n"
+ + " VALUES (1)\n"
+ + " UNION ALL\n"
Review Comment:
More info about how RECURSIVE UNION [ALL] works internally can be found here:
https://www.postgresql.org/docs/current/queries-with.html#QUERIES-WITH-RECURSIVE
Calcite implementation was heavily inspired by this postgresql description.
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