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https://issues.apache.org/jira/browse/DRILL-6546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526982#comment-16526982
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ASF GitHub Bot commented on DRILL-6546:
---------------------------------------
HanumathRao commented on a change in pull request #1346: DRILL-6546: Allow
unnest function with nested columns and complex expressions
URL: https://github.com/apache/drill/pull/1346#discussion_r199027667
##########
File path:
exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/lateraljoin/TestE2EUnnestAndLateral.java
##########
@@ -114,6 +115,57 @@ public void testMultiUnnestAtSameLevel() throws Exception
{
test(Sql);
}
+ @Test
+ public void testUnnestWithItem() throws Exception {
+ String sql = "select u.item from\n" +
+ "cp.`lateraljoin/nested-customer.parquet` c," +
+ "unnest(c.orders['items']) as u(item)\n" +
+ "limit 1";
+
+ testBuilder()
+ .sqlQuery(sql)
+ .unOrdered()
+ .baselineColumns("item")
+ .baselineValues(
+ TestBuilder.mapOf("i_name", "paper towel",
+ "i_number", 2.0,
+ "i_supplier", "oregan"))
+ .go();
+ }
+
+ @Test
+ public void testUnnestWithFunctionCall() throws Exception {
+ String sql = "select u.ord.o_amount o_amount from\n" +
+ "cp.`lateraljoin/nested-customer.parquet` c," +
+ "unnest(convert_fromjson(convert_tojson(c.orders))) as u(ord)\n" +
+ "limit 1";
+
+ testBuilder()
+ .sqlQuery(sql)
+ .unOrdered()
+ .baselineColumns("o_amount")
+ .baselineValues(4.5)
+ .go();
+ }
+
+ @Test
+ public void testUnnestWithMap() throws Exception {
+ String sql = "select u.item from\n" +
Review comment:
Can you also add multi unnest query to the testing. (something like this)
select u.item from cp.`lateraljoin/nested-customer.parquet` c,
unnest(c.orders.items) as u(item), unnest(c.orders.items) as u1(item1) limit 1
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> Allow unnest function with nested columns and complex expressions
> -----------------------------------------------------------------
>
> Key: DRILL-6546
> URL: https://issues.apache.org/jira/browse/DRILL-6546
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Volodymyr Vysotskyi
> Assignee: Volodymyr Vysotskyi
> Priority: Major
> Fix For: 1.14.0
>
>
> Currently queries with unnest and nested columns or complex expressions
> inside fails:
> {code:sql}
> select u.item from cp.`lateraljoin/nested-customer.parquet` c,
> unnest(c.orders.items) as u(item)
> {code}
> fails with error:
> {noformat}
> VALIDATION ERROR: From line 2, column 10 to line 2, column 21: Column
> 'orders.items' not found in table 'c'
> {noformat}
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