diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/expression/literal/Intervals.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/expression/literal/Intervals.java
index d5d13429e15af..d67ec8b2d68be 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/expression/literal/Intervals.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/expression/literal/Intervals.java
@@ -332,7 +332,7 @@ public static TemporalAmount negate(TemporalAmount interval) {
         int MAX_HOUR = 23;
         int MAX_MINUTE = 59;
         int MAX_SECOND = 59;
-        int MAX_MILLI = 999999999;
+        int MAX_MILLI = 999;
         
         char DOT = '.';
         char SPACE = ' ';
diff --git a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/expression/literal/IntervalsTests.java b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/expression/literal/IntervalsTests.java
index a54d902c69578..2140e27c8c2ff 100644
--- a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/expression/literal/IntervalsTests.java
+++ b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/expression/literal/IntervalsTests.java
@@ -83,7 +83,7 @@ public void testMinuteInterval() throws Exception {
 
     public void testSecondInterval() throws Exception {
         int randomSeconds = randomNonNegativeInt();
-        int randomMillis = randomBoolean() ? (randomBoolean() ? 0 : 999999999) : randomInt(999999999);
+        int randomMillis = randomBoolean() ? (randomBoolean() ? 0 : 999) : randomInt(999);
         String value = format(Locale.ROOT, "%s%d.%d", sign, randomSeconds, randomMillis);
         TemporalAmount amount = parseInterval(EMPTY, value, INTERVAL_SECOND);
         assertEquals(maybeNegate(sign, Duration.ofSeconds(randomSeconds).plusMillis(randomMillis)), amount);
@@ -128,7 +128,7 @@ public void testDayToSecond() throws Exception {
         int randomSecond = randomInt(59);
 
         boolean withMillis = randomBoolean();
-        int randomMilli = withMillis ? randomInt(999999999) : 0;
+        int randomMilli = withMillis ? randomInt(999) : 0;
         String millisString = withMillis ? "." + randomMilli : "";
 
         String value = format(Locale.ROOT, "%s%d %d:%d:%d%s", sign, randomDay, randomHour, randomMinute, randomSecond, millisString);
@@ -151,7 +151,7 @@ public void testHourToSecond() throws Exception {
         int randomSecond = randomInt(59);
 
         boolean withMillis = randomBoolean();
-        int randomMilli = withMillis ? randomInt(999999999) : 0;
+        int randomMilli = withMillis ? randomInt(999) : 0;
         String millisString = withMillis ? "." + randomMilli : "";
 
         String value = format(Locale.ROOT, "%s%d:%d:%d%s", sign, randomHour, randomMinute, randomSecond, millisString);
@@ -165,7 +165,7 @@ public void testMinuteToSecond() throws Exception {
         int randomSecond = randomInt(59);
 
         boolean withMillis = randomBoolean();
-        int randomMilli = withMillis ? randomInt(999999999) : 0;
+        int randomMilli = withMillis ? randomInt(999) : 0;
         String millisString = withMillis ? "." + randomMilli : "";
 
         String value = format(Locale.ROOT, "%s%d:%d%s", sign, randomMinute, randomSecond, millisString);
@@ -186,11 +186,11 @@ public void testYearToMonthTooBig() throws Exception {
 
     public void testMillisTooBig() throws Exception {
         int randomSeconds = randomNonNegativeInt();
-        int millisTooLarge = 1234567890;
+        int millisTooLarge = 1234;
         String value = format(Locale.ROOT, "%s%d.%d", sign, randomSeconds, millisTooLarge);
         ParsingException pe = expectThrows(ParsingException.class, () -> parseInterval(EMPTY, value, INTERVAL_SECOND));
         assertEquals("line -1:0: Invalid [INTERVAL SECOND] value [" + value + "]: [MILLISECOND] unit has illegal value [" + millisTooLarge
-                + "], expected a positive number up to [999999999]", pe.getMessage());
+                + "], expected a positive number up to [999]", pe.getMessage());
     }
 
     public void testDayToMinuteTooBig() throws Exception {
diff --git a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/ExpressionTests.java b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/ExpressionTests.java
index 2e34e947944d4..2926f380ec237 100644
--- a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/ExpressionTests.java
+++ b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/ExpressionTests.java
@@ -150,7 +150,7 @@ public void testStringInterval() throws Exception {
         int randomHour = randomInt(23);
         int randomMinute = randomInt(59);
         int randomSecond = randomInt(59);
-        int randomMilli = randomInt(999999999);
+        int randomMilli = randomInt(999);
 
         String value = format(Locale.ROOT, "INTERVAL '%d %d:%d:%d.%d' DAY TO SECOND", randomDay, randomHour, randomMinute, randomSecond,
                 randomMilli);
@@ -163,7 +163,7 @@ public void testNegativeStringInterval() throws Exception {
         int randomHour = randomInt(23);
         int randomMinute = randomInt(59);
         int randomSecond = randomInt(59);
-        int randomMilli = randomInt(999999999);
+        int randomMilli = randomInt(999);
 
         String value = format(Locale.ROOT, "INTERVAL -'%d %d:%d:%d.%d' DAY TO SECOND", randomDay, randomHour, randomMinute, randomSecond,
                 randomMilli);