Re: [I] [Bug] first_value semantic conflict [paimon]

["dark2momo (via GitHub)" <gi...@apache.org>]

dark2momo commented on issue #3393:
URL: https://github.com/apache/paimon/issues/3393#issuecomment-2703326618

   @luowanghaoyun I tested the case in `org.apache.paimon.flink.PartialUpdateITCase`, and the result is [1, 4, 2, 2, 2] , as expected. I wonder if this issue's status should be updated.
   
   ```java
       @Test
       public void testFirstValueSemantic() {
           sql(
                   "CREATE TABLE t1 (\n" +
                           "    k INT,\n" +
                           "    a INT,\n" +
                           "    b VARCHAR,\n" +
                           "    c VARCHAR,\n" +
                           "    d VARCHAR,\n" +
                           "PRIMARY KEY (k) NOT ENFORCED)\n" +
                           " WITH ('merge-engine'='aggregation', \n" +
                           "'fields.b.aggregate-function'='first_value',\n" +
                           "'fields.c.aggregate-function'='first_non_null_value',\n" +
                           "'fields.d.aggregate-function'='first_not_null_value',\n" +
                           "'sequence.field' = 'a'\n" +
                           ");");
   
           sql("INSERT INTO t1 VALUES (1, 4, '4', '4', '4')");
   
           sql("INSERT INTO t1 VALUES (1, 2, '2', '2', '2')");
   
           sql("CALL sys.compact('default.t1', '', '', '', 'sink.parallelism=4')");
   
           sql("INSERT INTO t1 VALUES (1, 3, '3', '3', '3')");
   
           assertThat(sql("SELECT * FROM t1")).containsExactly(Row.of(1, 4, "2", "2", "2"));
       }
   ```


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