diff --git a/src/gui/qgsquerybuilder.cpp b/src/gui/qgsquerybuilder.cpp
index 03965f201e50..aa80e22272d2 100644
--- a/src/gui/qgsquerybuilder.cpp
+++ b/src/gui/qgsquerybuilder.cpp
@@ -93,7 +93,34 @@ QgsQueryBuilder::QgsQueryBuilder( QgsVectorLayer *layer,
   connect( layer, &QgsVectorLayer::subsetStringChanged, this, &QgsQueryBuilder::layerSubsetStringChanged );
   layerSubsetStringChanged();
 
-  lblDataUri->setText( tr( "Set provider filter on %1" ).arg( layer->name() ) );
+  QString subsetStringDialect;
+  QString subsetStringHelpUrl;
+
+  if ( QgsDataProvider *provider = layer->dataProvider() )
+  {
+    lblDataUri->setText( tr( "Set provider filter on %1 (provider: %2)" ).arg( layer->name(), provider->name() ) );
+    subsetStringDialect = provider->subsetStringDialect();
+    subsetStringHelpUrl = provider->subsetStringHelpUrl();
+  }
+  else
+  {
+    lblDataUri->setText( tr( "Set provider filter on %1 (provider: %2)" ).arg( layer->name(), layer->providerType() ) );
+  }
+
+  if ( !subsetStringDialect.isEmpty() && !subsetStringHelpUrl.isEmpty() )
+  {
+    lblProviderFilterInfo->setOpenExternalLinks( true );
+    lblProviderFilterInfo->setText( tr( "Enter a <a href=\"%1\">%2</a> to filter the layer" ).arg( subsetStringHelpUrl ).arg( subsetStringDialect ) ) ;
+  }
+  else if ( !subsetStringDialect.isEmpty() )
+  {
+    lblProviderFilterInfo->setText( tr( "Enter a %1 to filter the layer" ).arg( subsetStringDialect ) ) ;
+  }
+  else
+  {
+    lblProviderFilterInfo->hide();
+  }
+
   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>