diff --git a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicFormReport.cs b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicFormReport.cs
index 49b1183..21f4bdc 100644
--- a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicFormReport.cs
+++ b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicFormReport.cs
@@ -105,7 +105,8 @@ public class DynamicFormReport : XtraReport
         var reportFields = GetReportFields(listForm, fields, selectQueryManager, defaultValueHelper);
         var selectQuery = DynamicReportImageHelper.StripReportPaging(DynamicReportImageHelper.ApplyQueryParameters(
             selectQueryManager.SelectQuery,
-            selectQueryManager.SelectQueryParameters));
+            selectQueryManager.SelectQueryParameters,
+            dataSourceType));
         selectQuery = DynamicReportSqlBuilder.ApplyLookupTextColumns(
             selectQuery,
             reportFields,
diff --git a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicGridReport.cs b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicGridReport.cs
index d787038..32859ab 100644
--- a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicGridReport.cs
+++ b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicGridReport.cs
@@ -134,7 +134,8 @@ public class DynamicGridReport : XtraReport
 
         var selectQuery = DynamicReportImageHelper.StripReportPaging(DynamicReportImageHelper.ApplyQueryParameters(
             selectQueryManager.SelectQuery,
-            selectQueryManager.SelectQueryParameters));
+            selectQueryManager.SelectQueryParameters,
+            dataSourceType));
         selectQuery = DynamicReportSqlBuilder.ApplyLookupTextColumns(
             selectQuery,
             reportColumns,
diff --git a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportImageHelper.cs b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportImageHelper.cs
index 78bc3cb..47923aa 100644
--- a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportImageHelper.cs
+++ b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportImageHelper.cs
@@ -121,7 +121,10 @@ internal static class DynamicReportImageHelper
             : $"XpoProvider={provider};{connectionString}";
     }
 
-    public static string ApplyQueryParameters(string sql, Dictionary<string, object> parameters)
+    public static string ApplyQueryParameters(
+        string sql,
+        Dictionary<string, object> parameters,
+        DataSourceTypeEnum? dataSourceType = null)
     {
         if (string.IsNullOrWhiteSpace(sql) || parameters == null || parameters.Count == 0)
         {
@@ -134,7 +137,7 @@ internal static class DynamicReportImageHelper
             sql = Regex.Replace(
                 sql,
                 Regex.Escape(key) + @"\b",
-                ToSqlLiteral(parameter.Value),
+                ToSqlLiteral(parameter.Value, dataSourceType),
                 RegexOptions.CultureInvariant);
         }
 
@@ -148,7 +151,7 @@ internal static class DynamicReportImageHelper
             : ReportPagingRegex.Replace(sql, string.Empty);
     }
 
-    public static string ToSqlLiteral(object value)
+    public static string ToSqlLiteral(object value, DataSourceTypeEnum? dataSourceType = null)
     {
         if (value == null || value == DBNull.Value)
         {
@@ -157,7 +160,9 @@ internal static class DynamicReportImageHelper
 
         return value switch
         {
-            string text => $"'{text.Replace("'", "''")}'",
+            string text => dataSourceType == DataSourceTypeEnum.Mssql
+                ? $"N'{text.Replace("'", "''")}'"
+                : $"'{text.Replace("'", "''")}'",
             Guid guid => $"'{guid}'",
             DateTime date => $"'{date:yyyy-MM-dd HH:mm:ss.fff}'",
             DateTimeOffset date => $"'{date:yyyy-MM-dd HH:mm:ss.fff zzz}'",
diff --git a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportSqlBuilder.cs b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportSqlBuilder.cs
index 954e28e..728a7b9 100644
--- a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportSqlBuilder.cs
+++ b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicReportSqlBuilder.cs
@@ -70,7 +70,7 @@ internal static class DynamicReportSqlBuilder
     {
         if (column.StaticLookupValues?.Count > 0)
         {
-            return CreateStaticLookupSelectPart(column);
+            return CreateStaticLookupSelectPart(column, dataSourceType);
         }
 
         if (column.Lookup != null && IsReportQueryableLookup(column.Lookup))
@@ -81,11 +81,13 @@ internal static class DynamicReportSqlBuilder
         return null;
     }
 
-    private static string CreateStaticLookupSelectPart(IReportLookupColumn column)
+    private static string CreateStaticLookupSelectPart(
+        IReportLookupColumn column,
+        DataSourceTypeEnum dataSourceType)
     {
         var sourceField = GetSourceField(column.Field.FieldName);
         var cases = column.StaticLookupValues
-            .Select(item => $"WHEN {DynamicReportImageHelper.ToSqlLiteral(item.Key)} THEN {DynamicReportImageHelper.ToSqlLiteral(item.Value)}");
+            .Select(item => $"WHEN {DynamicReportImageHelper.ToSqlLiteral(item.Key, dataSourceType)} THEN {DynamicReportImageHelper.ToSqlLiteral(item.Value, dataSourceType)}");
 
         return $"CASE {sourceField} {string.Join(" ", cases)} ELSE CAST({sourceField} AS VARCHAR(4000)) END AS {QuoteSqlIdentifier(column.BindingName)}";
     }
diff --git a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicTreeReport.cs b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicTreeReport.cs
index 61ea684..af2597c 100644
--- a/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicTreeReport.cs
+++ b/api/src/Sozsoft.Platform.HttpApi.Host/PredefinedReports/DynamicTreeReport.cs
@@ -144,7 +144,8 @@ public class DynamicTreeReport : XtraReport
 
         var selectQuery = DynamicReportImageHelper.StripReportPaging(DynamicReportImageHelper.ApplyQueryParameters(
             selectQueryManager.SelectQuery,
-            selectQueryManager.SelectQueryParameters));
+            selectQueryManager.SelectQueryParameters,
+            dataSourceType));
         selectQuery = DynamicReportSqlBuilder.ApplyLookupTextColumns(
             selectQuery,
             reportColumns,