diff --git a/jOOQ/src/main/java/org/jooq/impl/DSL.java b/jOOQ/src/main/java/org/jooq/impl/DSL.java
index a65f9a03f4..0bcdb86174 100644
--- a/jOOQ/src/main/java/org/jooq/impl/DSL.java
+++ b/jOOQ/src/main/java/org/jooq/impl/DSL.java
@@ -19320,6 +19320,46 @@ public class DSL {
         return new Xmlforest(fields);
     }
 
+    /**
+     * The <code>XMLSERIALIZE_DOCUMENT</code> function.
+     *
+     * @param value is wrapped as {@link #val(Object)}.
+     */
+    @NotNull
+    @Support({ POSTGRES })
+    public static <T> Field<T> xmlserializeDocument(XML value, DataType<T> type) {
+        return new Xmlserialize(false, Tools.field(value), type);
+    }
+
+    /**
+     * The <code>XMLSERIALIZE_DOCUMENT</code> function.
+     */
+    @NotNull
+    @Support({ POSTGRES })
+    public static <T> Field<T> xmlserializeDocument(Field<XML> value, DataType<T> type) {
+        return new Xmlserialize(false, value, type);
+    }
+
+    /**
+     * The <code>XMLSERIALIZE_CONTENT</code> function.
+     *
+     * @param value is wrapped as {@link #val(Object)}.
+     */
+    @NotNull
+    @Support({ POSTGRES })
+    public static <T> Field<T> xmlserializeContent(XML value, DataType<T> type) {
+        return new Xmlserialize(true, Tools.field(value), type);
+    }
+
+    /**
+     * The <code>XMLSERIALIZE_CONTENT</code> function.
+     */
+    @NotNull
+    @Support({ POSTGRES })
+    public static <T> Field<T> xmlserializeContent(Field<XML> value, DataType<T> type) {
+        return new Xmlserialize(true, value, type);
+    }
+
     // -------------------------------------------------------------------------
     // JSON functions
     // -------------------------------------------------------------------------
diff --git a/jOOQ/src/main/java/org/jooq/impl/Multiset.java b/jOOQ/src/main/java/org/jooq/impl/Multiset.java
index 81f136a56c..08e6b09c08 100644
--- a/jOOQ/src/main/java/org/jooq/impl/Multiset.java
+++ b/jOOQ/src/main/java/org/jooq/impl/Multiset.java
@@ -39,6 +39,7 @@ package org.jooq.impl;
 
 import static java.lang.Boolean.TRUE;
 // ...
+// ...
 import static org.jooq.SQLDialect.POSTGRES;
 import static org.jooq.impl.DSL.jsonArray;
 import static org.jooq.impl.DSL.jsonArrayAgg;
@@ -51,6 +52,7 @@ import static org.jooq.impl.DSL.select;
 import static org.jooq.impl.DSL.selectFrom;
 import static org.jooq.impl.DSL.xmlagg;
 import static org.jooq.impl.DSL.xmlelement;
+import static org.jooq.impl.DSL.xmlserializeContent;
 import static org.jooq.impl.Keywords.K_MULTISET;
 import static org.jooq.impl.Names.N_MULTISET;
 import static org.jooq.impl.Names.N_RECORD;
@@ -223,7 +225,7 @@ final class Multiset<R extends Record> extends AbstractField<Result<R>> {
                         Select<Record1<XML>> s = select(xmlelement(N_RESULT, filter)).from(t);
 
                         if (multisetCondition && NO_SUPPORT_XML_COMPARE.contains(ctx.dialect()))
-                            ctx.visit(DSL.field(s).cast(VARCHAR));
+                            ctx.visit(xmlserializeContent(DSL.field(s), VARCHAR));
                         else
                             visitSubquery(ctx, s, true);
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/MultisetAgg.java b/jOOQ/src/main/java/org/jooq/impl/MultisetAgg.java
index cdeda43206..be549cf5ca 100644
--- a/jOOQ/src/main/java/org/jooq/impl/MultisetAgg.java
+++ b/jOOQ/src/main/java/org/jooq/impl/MultisetAgg.java
@@ -44,6 +44,7 @@ import static org.jooq.impl.DSL.jsonObject;
 import static org.jooq.impl.DSL.jsonbArrayAgg;
 import static org.jooq.impl.DSL.xmlagg;
 import static org.jooq.impl.DSL.xmlelement;
+import static org.jooq.impl.DSL.xmlserializeContent;
 import static org.jooq.impl.Multiset.NO_SUPPORT_JSON_COMPARE;
 import static org.jooq.impl.Multiset.NO_SUPPORT_XML_COMPARE;
 import static org.jooq.impl.Multiset.jsonArrayaggEmulation;
@@ -140,14 +141,14 @@ final class MultisetAgg<R extends Record> extends DefaultAggregateFunction<Resul
             case XML: {
                 XMLAggOrderByStep<XML> order = xmlaggEmulation(row, multisetCondition);
 
-                Field<?> f = xmlelement(N_RESULT,
+                Field<XML> f = xmlelement(N_RESULT,
                     multisetCondition
                         ? fo((AbstractAggregateFunction<?>) order.orderBy(row.fields()))
                         : ofo((AbstractAggregateFunction<?>) order)
                 );
 
                 if (multisetCondition && NO_SUPPORT_XML_COMPARE.contains(ctx.dialect()))
-                    ctx.visit(f.cast(VARCHAR));
+                    ctx.visit(xmlserializeContent(f, VARCHAR));
                 else
                     ctx.visit(f);
 
diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index d244b94180..f57aa493fa 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -7827,6 +7827,8 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
                         return field;
                     else if ((field = parseFieldXMLQueryIf()) != null)
                         return field;
+                    else if ((field = parseFieldXMLSerializeIf()) != null)
+                        return field;
 
                 break;
 
@@ -8216,6 +8218,24 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
         return null;
     }
 
+    private final Field<?> parseFieldXMLSerializeIf() {
+        if (parseFunctionNameIf("XMLSERIALIZE")) {
+            parse('(');
+            boolean content = parseKeywordIf("CONTENT");
+            if (!content)
+                parseKeywordIf("DOCUMENT");
+
+            Field<XML> value = (Field<XML>) parseField();
+            parseKeyword("AS");
+            DataType<?> type = parseCastDataType();
+            parse(')');
+
+            return content ? xmlserializeContent(value, type) : xmlserializeDocument(value, type);
+        }
+
+        return null;
+    }
+
     private final Field<?> parseFieldXMLConcatIf() {
         if (parseFunctionNameIf("XMLCONCAT")) {
             parse('(');
diff --git a/jOOQ/src/main/java/org/jooq/impl/Xmlserialize.java b/jOOQ/src/main/java/org/jooq/impl/Xmlserialize.java
new file mode 100644
index 0000000000..1df3a42b9a
--- /dev/null
+++ b/jOOQ/src/main/java/org/jooq/impl/Xmlserialize.java
@@ -0,0 +1,151 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Other licenses:
+ * -----------------------------------------------------------------------------
+ * Commercial licenses for this work are available. These replace the above
+ * ASL 2.0 and offer limited warranties, support, maintenance, and commercial
+ * database integrations.
+ *
+ * For more information, please visit: http://www.jooq.org/licenses
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+package org.jooq.impl;
+
+import static org.jooq.impl.DSL.*;
+import static org.jooq.impl.Internal.*;
+import static org.jooq.impl.Keywords.*;
+import static org.jooq.impl.Names.*;
+import static org.jooq.impl.SQLDataType.*;
+import static org.jooq.impl.Tools.*;
+import static org.jooq.impl.Tools.BooleanDataKey.*;
+import static org.jooq.impl.Tools.DataExtendedKey.*;
+import static org.jooq.impl.Tools.DataKey.*;
+import static org.jooq.SQLDialect.*;
+
+import org.jooq.*;
+import org.jooq.Record;
+import org.jooq.conf.*;
+import org.jooq.impl.*;
+import org.jooq.tools.*;
+
+import java.util.*;
+
+
+/**
+ * The <code>XMLSERIALIZE DOCUMENT</code> statement.
+ */
+@SuppressWarnings({ "rawtypes", "unchecked", "unused" })
+final class Xmlserialize<T>
+extends
+    AbstractField<T>
+{
+
+    private final boolean     content;
+    private final Field<XML>  value;
+    private final DataType<T> type;
+
+    Xmlserialize(
+        boolean content,
+        Field<XML> value,
+        DataType<T> type
+    ) {
+        super(
+            N_XMLSERIALIZE,
+            type
+        );
+
+        this.content = content;
+        this.value = value;
+        this.type = type;
+    }
+
+    // -------------------------------------------------------------------------
+    // XXX: QueryPart API
+    // -------------------------------------------------------------------------
+
+
+
+    @Override
+    public final void accept(Context<?> ctx) {
+
+
+
+
+
+
+
+        ctx.visit(N_XMLSERIALIZE).sql('(');
+
+        if (content)
+            ctx.visit(K_CONTENT).sql(' ');
+
+
+
+
+        else
+            ctx.visit(K_DOCUMENT).sql(' ');
+
+        ctx.visit(value).sql(' ').visit(K_AS).sql(' ')
+           .sql(type.getCastTypeName(ctx.configuration()))
+           .sql(')');
+    }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    // -------------------------------------------------------------------------
+    // The Object API
+    // -------------------------------------------------------------------------
+
+    @Override
+    public boolean equals(Object that) {
+        if (that instanceof Xmlserialize) {
+            return
+                StringUtils.equals(content, ((Xmlserialize) that).content) &&
+                StringUtils.equals(value, ((Xmlserialize) that).value) &&
+                StringUtils.equals(type, ((Xmlserialize) that).type)
+            ;
+        }
+        else
+            return super.equals(that);
+    }
+}