diff --git a/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamCalcRel.java b/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamCalcRel.java
index d647027a9ae5..4895c1478766 100644
--- a/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamCalcRel.java
+++ b/sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/rel/BeamCalcRel.java
@@ -395,6 +395,7 @@ static Object toBeamObject(Object value, FieldType fieldType, boolean verifyValu
         }
         return ((ByteString) value).getBytes();
       case ARRAY:
+      case ITERABLE:
         return toBeamList((List<Object>) value, fieldType.getCollectionElementType(), verifyValues);
       case MAP:
         return toBeamMap(
@@ -558,6 +559,9 @@ private static Expression getBeamField(
         case ROW:
           value = Expressions.call(expression, "getRow", fieldName);
           break;
+        case ITERABLE:
+          value = Expressions.call(expression, "getIterable", fieldName);
+          break;
         case LOGICAL_TYPE:
           String identifier = fieldType.getLogicalType().getIdentifier();
           if (FixedString.IDENTIFIER.equals(identifier)
@@ -634,6 +638,7 @@ private static Expression toCalciteValue(Expression value, FieldType fieldType)
           return nullOr(
               value, Expressions.new_(ByteString.class, Expressions.convert_(value, byte[].class)));
         case ARRAY:
+        case ITERABLE:
           return nullOr(value, toCalciteList(value, fieldType.getCollectionElementType()));
         case MAP:
           return nullOr(value, toCalciteMap(value, fieldType.getMapValueType()));
diff --git a/sdks/java/extensions/sql/src/test/java/org/apache/beam/sdk/extensions/sql/BeamSqlDslBase.java b/sdks/java/extensions/sql/src/test/java/org/apache/beam/sdk/extensions/sql/BeamSqlDslBase.java
index 426b95ae6df6..68b672e1814c 100644
--- a/sdks/java/extensions/sql/src/test/java/org/apache/beam/sdk/extensions/sql/BeamSqlDslBase.java
+++ b/sdks/java/extensions/sql/src/test/java/org/apache/beam/sdk/extensions/sql/BeamSqlDslBase.java
@@ -38,6 +38,7 @@
 import org.apache.beam.sdk.values.PBegin;
 import org.apache.beam.sdk.values.PCollection;
 import org.apache.beam.sdk.values.Row;
+import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Lists;
 import org.joda.time.Duration;
 import org.joda.time.Instant;
 import org.junit.Before;
@@ -94,6 +95,7 @@ public static void prepareClass() throws ParseException {
             .addDateTimeField("f_timestamp")
             .addInt32Field("f_int2")
             .addDecimalField("f_decimal")
+            .addIterableField("f_iterable", FieldType.STRING)
             .build();
 
     rowsInTableA =
@@ -111,7 +113,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 1, 1, 3),
                 parseTimestampWithoutTimeZone("2017-01-01 01:01:03"),
                 0,
-                new BigDecimal(1))
+                new BigDecimal(1),
+                Lists.newArrayList("s1", "s2"))
             .addRows(
                 2,
                 2000L,
@@ -125,7 +128,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 1, 2, 3),
                 parseTimestampWithoutTimeZone("2017-01-01 01:02:03"),
                 0,
-                new BigDecimal(2))
+                new BigDecimal(2),
+                Lists.newArrayList("s1", "s2"))
             .addRows(
                 3,
                 3000L,
@@ -139,7 +143,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 1, 6, 3),
                 parseTimestampWithoutTimeZone("2017-01-01 01:06:03"),
                 0,
-                new BigDecimal(3))
+                new BigDecimal(3),
+                Lists.newArrayList("s1", "s2"))
             .addRows(
                 4,
                 4000L,
@@ -153,7 +158,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 2, 4, 3),
                 parseTimestampWithoutTimeZone("2017-01-01 02:04:03"),
                 0,
-                new BigDecimal(4))
+                new BigDecimal(4),
+                Lists.newArrayList("s1", "s2"))
             .getRows();
 
     monthlyRowsInTableA =
@@ -171,7 +177,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 1, 1, 3),
                 parseTimestampWithUTCTimeZone("2017-01-01 01:01:03"),
                 0,
-                new BigDecimal(1))
+                new BigDecimal(1),
+                Lists.newArrayList("s1", "s2"))
             .addRows(
                 2,
                 2000L,
@@ -185,7 +192,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 1, 2, 3),
                 parseTimestampWithUTCTimeZone("2017-02-01 01:02:03"),
                 0,
-                new BigDecimal(2))
+                new BigDecimal(2),
+                Lists.newArrayList("s1", "s2"))
             .addRows(
                 3,
                 3000L,
@@ -199,7 +207,8 @@ public static void prepareClass() throws ParseException {
                 LocalDateTime.of(2017, 1, 1, 1, 6, 3),
                 parseTimestampWithUTCTimeZone("2017-03-01 01:06:03"),
                 0,
-                new BigDecimal(3))
+                new BigDecimal(3),
+                Lists.newArrayList("s1", "s2"))
             .getRows();
 
     schemaFloatDouble =