rdblue commented on a change in pull request #2189:
URL: https://github.com/apache/iceberg/pull/2189#discussion_r568175582
##########
File path:
spark3-extensions/src/test/java/org/apache/iceberg/spark/extensions/TestMerge.java
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@@ -48,6 +48,55 @@ public void removeTables() {
sql("DROP TABLE IF EXISTS source");
}
+ // TODO: add tests for multiple NOT MATCHED clauses when we move to Spark 3.1
+
+ @Test
+ public void testMergeInsertOnly() {
+ createAndInitTable("id STRING, v STRING",
+ "{ \"id\": \"a\", \"v\": \"v1\" }\n" +
+ "{ \"id\": \"b\", \"v\": \"v2\" }");
+ createOrReplaceView("source",
+ "{ \"id\": \"a\", \"v\": \"v1_1\" }\n" +
+ "{ \"id\": \"a\", \"v\": \"v1_2\" }\n" +
+ "{ \"id\": \"c\", \"v\": \"v3\" }\n" +
+ "{ \"id\": \"d\", \"v\": \"v4_1\" }\n" +
+ "{ \"id\": \"d\", \"v\": \"v4_2\" }");
+
+ sql("MERGE INTO %s t USING source " +
+ "ON t.id == source.id " +
+ "WHEN NOT MATCHED THEN " +
+ " INSERT *", tableName);
+
+ ImmutableList<Object[]> expectedRows = ImmutableList.of(
+ row("a", "v1"), // kept
+ row("b", "v2"), // kept
+ row("c", "v3"), // new
+ row("d", "v4_1"), // new
+ row("d", "v4_2") // new
+ );
+ assertEquals("Output should match", expectedRows, sql("SELECT * FROM %s
ORDER BY id", tableName));
+ }
+
+ @Test
+ public void testMergeInsertOnlyWithCondition() {
+ createAndInitTable("id INTEGER, v INTEGER", "{ \"id\": 1, \"v\": 1 }");
+ createOrReplaceView("source",
+ "{ \"id\": 1, \"v\": 11, \"is_new\": true }\n" +
+ "{ \"id\": 2, \"v\": 21, \"is_new\": true }\n" +
+ "{ \"id\": 2, \"v\": 22, \"is_new\": false }");
+
+ sql("MERGE INTO %s t USING source s " +
+ "ON t.id == s.id " +
+ "WHEN NOT MATCHED AND is_new = TRUE THEN " +
+ " INSERT (v, id) VALUES (s.v + 100, s.id)", tableName);
Review comment:
I agree. A comment would be helpful if we are validating order.
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