diff --git a/src/gui/qgsquerybuilder.cpp b/src/gui/qgsquerybuilder.cpp
index 03965f201e50..d289424b2b3a 100644
--- a/src/gui/qgsquerybuilder.cpp
+++ b/src/gui/qgsquerybuilder.cpp
@@ -93,7 +93,16 @@ QgsQueryBuilder::QgsQueryBuilder( QgsVectorLayer *layer,
   connect( layer, &QgsVectorLayer::subsetStringChanged, this, &QgsQueryBuilder::layerSubsetStringChanged );
   layerSubsetStringChanged();
 
-  lblDataUri->setText( tr( "Set provider filter on %1" ).arg( layer->name() ) );
+  lblDataUri->setText( tr( "Set provider filter on %1 (provider: %2)" ).arg( layer->name() ).arg( layer->dataProvider()->name() ) );
+
+  const QString subsetStringDialect = layer->dataProvider()->subsetStringDialect();
+  if ( !subsetStringDialect.isEmpty() )
+  {
+    const QString subsetStringHelpUrl = layer->dataProvider()->subsetStringHelpUrl();
+    lblProviderFilterInfo->setOpenExternalLinks( true );
+    lblProviderFilterInfo->setText( tr( "Enter a <a href=\"%1\">%2</a> to filter the layer" ).arg( subsetStringHelpUrl ).arg( subsetStringDialect ) ) ;
+  }
+
   mTxtSql->setText( mOrigSubsetString );
 
   mFilterLineEdit->setShowSearchIcon( true );
diff --git a/src/ui/qgsquerybuilderbase.ui b/src/ui/qgsquerybuilderbase.ui
index df0249bbd96a..c8a5217d9402 100644
--- a/src/ui/qgsquerybuilderbase.ui
+++ b/src/ui/qgsquerybuilderbase.ui
@@ -322,9 +322,16 @@ p, li { white-space: pre-wrap; }
           <property name="bottomMargin">
            <number>11</number>
           </property>
-          <item row="0" column="0">
+          <item row="1" column="0">
            <widget class="QgsCodeEditorSQL" name="mTxtSql" native="true"/>
           </item>
+          <item row="0" column="0">
+           <widget class="QLabel" name="lblProviderFilterInfo">
+            <property name="text">
+             <string>Provider expression dialect</string>
+            </property>
+           </widget>
+          </item>
          </layout>
         </widget>
        </item>