diff --git a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/ServletUtil.java b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/ServletUtil.java
index 9e85c82..b97d88a 100644
--- a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/ServletUtil.java
+++ b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/ServletUtil.java
@@ -52,6 +52,6 @@
 
     public static DataverseName getDataverseName(IServletRequest request, String dataverseParameterName) {
         List<String> values = request.getParameterValues(dataverseParameterName);
-        return values != null ? DataverseName.create(values) : null;
+        return !values.isEmpty() ? DataverseName.create(values) : null;
     }
 }
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/api/multiple-param-values/multiple-param-values.1.get.http b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/api/multiple-param-values/multiple-param-values.1.get.http
new file mode 100644
index 0000000..5e92649
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/queries_sqlpp/api/multiple-param-values/multiple-param-values.1.get.http
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+/*
+ * Description: testing passing multiple values for a parameter
+ * Result: success (the first value of a parameter is chosen)
+ */
+/query/service?statement=SELECT%201;&statement=SELECT%202&optimized-logical-plan=false&optimized-logical-plan=true;
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/results/api/multiple-param-values/multiple-param-values.1.regexjson b/asterixdb/asterix-app/src/test/resources/runtimets/results/api/multiple-param-values/multiple-param-values.1.regexjson
new file mode 100644
index 0000000..0701ef3
--- /dev/null
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/results/api/multiple-param-values/multiple-param-values.1.regexjson
@@ -0,0 +1,12 @@
+{
+	"requestID": "R{.*}",
+	"signature": {
+		"*": "*"
+	},
+	"type": "application/x-adm",
+	"results": [ "{ \"$1\": 1 }\n" ]
+	,
+	"plans":{},
+	"status": "success",
+	"metrics": "R{.*}"
+}
\ No newline at end of file
diff --git a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
index be711d3..df8de8d 100644
--- a/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
+++ b/asterixdb/asterix-app/src/test/resources/runtimets/testsuite_sqlpp.xml
@@ -27,7 +27,12 @@
   &AsyncDeferredQueries;
   &GeoQueries;
   &TemporalQueries;
-  <test-group name="flwor">
+  <test-group name="api">
+    <test-case FilePath="api">
+      <compilation-unit name="multiple-param-values">
+        <output-dir compare="Text">multiple-param-values</output-dir>
+      </compilation-unit>
+    </test-case>
     <test-case FilePath="api">
       <compilation-unit name="readonly-request">
         <output-dir compare="Text">readonly-request</output-dir>
diff --git a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/api/IServletRequest.java b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/api/IServletRequest.java
index a8996e3..a049412 100644
--- a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/api/IServletRequest.java
+++ b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/api/IServletRequest.java
@@ -36,9 +36,9 @@
     FullHttpRequest getHttpRequest();
 
     /**
-     * Get a request parameter
+     * Get a request parameter. If there are multiple values, it returns the first one.
      *
-     * @param name
+     * @param name parameter name
      * @return the parameter or null if not found
      */
     String getParameter(CharSequence name);
@@ -46,8 +46,8 @@
     /**
      * Get all values of a request parameter
      *
-     * @param name
-     * @return the parameter values or null if not found
+     * @param name parameter name
+     * @return the parameter values or empty list if not found
      */
     List<String> getParameterValues(CharSequence name);
 
@@ -59,16 +59,23 @@
     Set<String> getParameterNames();
 
     /**
-     * Get the all request parameters
+     * Get all the request parameters. If there are multiple values for a parameter, it contains the first one.
      *
      * @return the parameters
      */
     Map<String, String> getParameters();
 
     /**
+     * Get all the values of all the request parameters.
+     *
+     * @return the parameters
+     */
+    Map<String, List<String>> getParametersValues();
+
+    /**
      * Get a request header
      *
-     * @param name
+     * @param name header name
      * @return the header or null if not found
      */
     String getHeader(CharSequence name);
@@ -76,8 +83,8 @@
     /**
      * Get a request header if found, return the default value, otherwise
      *
-     * @param name
-     * @param defaultValue
+     * @param name header name
+     * @param defaultValue default value
      * @return the header or defaultValue if not found
      */
     default String getHeader(CharSequence name, String defaultValue) {
diff --git a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/BaseRequest.java b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/BaseRequest.java
index f5749b1..d4f57ea 100644
--- a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/BaseRequest.java
+++ b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/BaseRequest.java
@@ -19,14 +19,15 @@
 package org.apache.hyracks.http.server;
 
 import java.net.InetSocketAddress;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
 import org.apache.hyracks.http.api.IServletRequest;
-import org.apache.hyracks.http.server.utils.HttpUtil;
 
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.http.FullHttpRequest;
@@ -34,22 +35,24 @@
 import io.netty.handler.codec.http.QueryStringDecoder;
 
 public class BaseRequest implements IServletRequest {
+
+    private static final List<String> NO_PARAM = Collections.singletonList(null);
     protected final FullHttpRequest request;
-    protected final Map<String, List<String>> parameters;
+    protected final Map<? extends CharSequence, List<String>> parameters;
     protected final InetSocketAddress remoteAddress;
     protected final HttpScheme scheme;
     protected final InetSocketAddress localAddress;
 
     public static IServletRequest create(ChannelHandlerContext ctx, FullHttpRequest request, HttpScheme scheme) {
         QueryStringDecoder decoder = new QueryStringDecoder(request.uri());
-        Map<String, List<String>> param = decoder.parameters();
+        Map<? extends CharSequence, List<String>> param = decoder.parameters();
         InetSocketAddress remoteAddress = (InetSocketAddress) ctx.channel().remoteAddress();
         InetSocketAddress localAddress = (InetSocketAddress) ctx.channel().localAddress();
         return new BaseRequest(request, localAddress, remoteAddress, param, scheme);
     }
 
     protected BaseRequest(FullHttpRequest request, InetSocketAddress localAddress, InetSocketAddress remoteAddress,
-            Map<String, List<String>> parameters, HttpScheme scheme) {
+            Map<? extends CharSequence, List<String>> parameters, HttpScheme scheme) {
         this.request = request;
         this.localAddress = localAddress;
         this.remoteAddress = remoteAddress;
@@ -64,28 +67,33 @@
 
     @Override
     public String getParameter(CharSequence name) {
-        return HttpUtil.getParameter(parameters, name);
+        return parameters.getOrDefault(name, NO_PARAM).get(0);
     }
 
     @Override
     public List<String> getParameterValues(CharSequence name) {
-        List<String> values = parameters.get(String.valueOf(name));
-        return values != null ? Collections.unmodifiableList(values) : null;
+        return Collections.unmodifiableList(parameters.getOrDefault(name, Collections.emptyList()));
     }
 
     @Override
     public Set<String> getParameterNames() {
-        return Collections.unmodifiableSet(parameters.keySet());
+        Set<String> names = new HashSet<>();
+        parameters.keySet().forEach(name -> names.add(name.toString()));
+        return names;
     }
 
     @Override
     public Map<String, String> getParameters() {
         HashMap<String, String> paramMap = new HashMap<>();
-        for (String name : parameters.keySet()) {
-            paramMap.put(name, HttpUtil.getParameter(parameters, name));
+        parameters.forEach((name, values) -> paramMap.put(name.toString(), values.get(0)));
+        return paramMap;
+    }
 
-        }
-        return Collections.unmodifiableMap(paramMap);
+    @Override
+    public Map<String, List<String>> getParametersValues() {
+        Map<String, List<String>> params = new HashMap<>();
+        parameters.forEach((name, values) -> params.put(name.toString(), new ArrayList<>(values)));
+        return params;
     }
 
     @Override
diff --git a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java
index 4f20174..053356f 100644
--- a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java
+++ b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/utils/HttpUtil.java
@@ -24,7 +24,6 @@
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
@@ -68,11 +67,6 @@
     private HttpUtil() {
     }
 
-    public static String getParameter(Map<String, List<String>> parameters, CharSequence name) {
-        List<String> parameter = parameters.get(String.valueOf(name));
-        return parameter == null ? null : String.join(",", parameter);
-    }
-
     public static IServletRequest toServletRequest(ChannelHandlerContext ctx, FullHttpRequest request,
             HttpScheme scheme) {
         return ContentType.APPLICATION_X_WWW_FORM_URLENCODED.equals(getContentTypeOnly(request))