fix failed case

Author: starocean999

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/executable/DateTimeExtractAndTransform.java

@@ -581,8 +581,10 @@ public static Expression fromUnixTime(DecimalLiteral second, StringLikeLiteral f
             throw new AnalysisException("Operation from_unixtime of " + second.getValue() + " out of range");
         }
 
+        BigDecimal decimalVal = second.getValue();
+        BigDecimal microSeconds = decimalVal.movePointRight(decimalVal.scale()).setScale(0, RoundingMode.DOWN);
         ZonedDateTime dateTime = LocalDateTime.of(1970, 1, 1, 0, 0, 0)
-                .plusSeconds(second.getValue().longValue())
+                .plus(microSeconds.longValue(), ChronoUnit.MICROS)
                 .atZone(ZoneId.of("UTC+0"))
                 .toOffsetDateTime()
                 .atZoneSameInstant(DateUtils.getTimeZone());
@@ -606,9 +608,10 @@ public static Expression fromUnixTime(DecimalV3Literal second, StringLikeLiteral
         if (second.getValue().signum() < 0) {
             throw new AnalysisException("Operation from_unixtime of " + second.getValue() + " out of range");
         }
-
+        BigDecimal decimalVal = second.getValue();
+        BigDecimal microSeconds = decimalVal.movePointRight(decimalVal.scale()).setScale(0, RoundingMode.DOWN);
         ZonedDateTime dateTime = LocalDateTime.of(1970, 1, 1, 0, 0, 0)
-                .plusSeconds(second.getValue().longValue())
+                .plus(microSeconds.longValue(), ChronoUnit.MICROS)
                 .atZone(ZoneId.of("UTC+0"))
                 .toOffsetDateTime()
                 .atZoneSameInstant(DateUtils.getTimeZone());

fe/fe-core/src/test/java/org/apache/doris/nereids/rules/expression/FoldConstantTest.java

@@ -474,13 +474,13 @@ void testFoldString() {
         rewritten = executor.rewrite(f, context);
         Assertions.assertEquals(new VarcharLiteral("73 11 30"), rewritten);
 
-        f = new FromUnixtime(DecimalLiteral.of(new BigDecimal("1761548288.000000")));
+        f = new FromUnixtime(DecimalLiteral.of(new BigDecimal("1761548288.100000")));
         rewritten = executor.rewrite(f, context);
-        Assertions.assertEquals(new VarcharLiteral("2025-10-27 14:58:08.000000"), rewritten);
+        Assertions.assertEquals(new VarcharLiteral("2025-10-27 14:58:08.100000"), rewritten);
 
-        f = new FromUnixtime(DecimalV3Literal.of(new BigDecimal("1761548288.000000")));
+        f = new FromUnixtime(DecimalV3Literal.of(new BigDecimal("1761548288.100000")));
         rewritten = executor.rewrite(f, context);
-        Assertions.assertEquals(new VarcharLiteral("2025-10-27 14:58:08.000000"), rewritten);
+        Assertions.assertEquals(new VarcharLiteral("2025-10-27 14:58:08.100000"), rewritten);
 
         UnixTimestamp ut = new UnixTimestamp(StringLiteral.of("2021-11-11"), StringLiteral.of("%Y-%m-%d"));
         rewritten = executor.rewrite(ut, context);

regression-test/suites/nereids_rules_p0/partition_prune/one_key_range_part_test.groovy

@@ -103,7 +103,7 @@ suite("one_key_range_part_test") {
     }
     explain {
         sql("SELECT a, dt, c FROM key_1_fixed_range_date_part WHERE dt = from_unixtime(unix_timestamp('2023-05-20 12:00:00'));")
-        contains "14/14 (p_min,p_202301,p_202302,p_202303,p_202304,p_202305,p_202306,p_202307,p_202308,p_202309,p_202310,p_202311,p_202312,p_max)"
+        contains "1/14 (p_202305)"
     }
     explain {
         sql("SELECT a, dt, c FROM key_1_fixed_range_date_part WHERE date(dt) = '2023-09-05';")
@@ -234,7 +234,7 @@ suite("one_key_range_part_test") {
     }
     explain {
         sql("SELECT a, dt, c FROM key_1_special_fixed_range_date_part WHERE dt = from_unixtime(unix_timestamp('2023-11-20 12:00:00'));")
-        contains "10/10 (p_min,p_202301,p_202302,p_202304,p_202305,p_202306,p_202309,p_202310,p_202312,p_max)"
+        contains "1/10 (p_202310)"
     }
     explain {
         sql("SELECT a, dt, c FROM key_1_special_fixed_range_date_part WHERE date(dt) = '2023-09-05';")

regression-test/suites/nereids_rules_p0/partition_prune/one_key_range_part_update_test.groovy

@@ -96,7 +96,7 @@ suite("one_key_range_part_update_test") {
     }
     explain {
         sql("SELECT a, dt, c FROM key_1_special_fixed_range_date_part_update WHERE dt = from_unixtime(unix_timestamp('2023-08-20 12:00:00'));")
-        contains "11/11 (p_min,p_202301,p_202302,p_202304,p_202305,p_202306,p_202308,p_202309,p_202310,p_202312,p_max)"
+        contains "1/11 (p_202308)"
     }
     explain {
         sql("SELECT a, dt, c FROM key_1_special_fixed_range_date_part_update WHERE date(dt) = '2023-08-05';")