diff --git a/Examples/domain_01/domain_01.csproj b/Examples/domain_01/domain_01.csproj
index 1e775209..e8ad20a8 100644
--- a/Examples/domain_01/domain_01.csproj
+++ b/Examples/domain_01/domain_01.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
 	<PropertyGroup>
-		<TargetFramework>netcoreapp2.2</TargetFramework>
+		<TargetFramework>netcoreapp2.1</TargetFramework>
 		<AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
 	</PropertyGroup>
 
diff --git a/Examples/efcore_to_freesql/efcore_to_freesql.csproj b/Examples/efcore_to_freesql/efcore_to_freesql.csproj
index fc27cbf1..4516a3f9 100644
--- a/Examples/efcore_to_freesql/efcore_to_freesql.csproj
+++ b/Examples/efcore_to_freesql/efcore_to_freesql.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.2</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
     <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.App" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.2.2" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FreeSql.Repository/FreeSql.Repository.csproj b/FreeSql.Repository/FreeSql.Repository.csproj
index 3de04a42..357151fc 100644
--- a/FreeSql.Repository/FreeSql.Repository.csproj
+++ b/FreeSql.Repository/FreeSql.Repository.csproj
@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFramework>netstandard2.0</TargetFramework>
-		<Version>0.3.27</Version>
+		<Version>0.4.9</Version>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql Implementation of General Repository, Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite, and read/write separation、and split table.</Description>
 		<PackageProjectUrl>https://github.com/2881099/FreeSql/wiki/Repository</PackageProjectUrl>
diff --git a/FreeSql.Tests/MySql/MySqlExpression/StringTest.cs b/FreeSql.Tests/MySql/MySqlExpression/StringTest.cs
index 32bf386f..30bbb7a6 100644
--- a/FreeSql.Tests/MySql/MySqlExpression/StringTest.cs
+++ b/FreeSql.Tests/MySql/MySqlExpression/StringTest.cs
@@ -34,6 +34,7 @@ namespace FreeSql.Tests.MySqlExpression {
 		}
 		class TestEqualsGuid {
 			public Guid id { get; set; }
+			public bool IsDeleted { get; set; }
 		}
 
 		[Fact]
@@ -41,6 +42,7 @@ namespace FreeSql.Tests.MySqlExpression {
 			var list = new List<object>();
 			list.Add(select.Where(a => a.Title.Equals("aaa")).ToList());
 			list.Add(g.sqlite.Select<TestEqualsGuid>().Where(a => a.id.Equals(Guid.Empty)).ToList());
+			list.Add(g.sqlite.Select<TestEqualsGuid>().Where(a => a.IsDeleted.Equals(false)).ToList());
 		}
 
 		[Fact]
diff --git a/FreeSql/FreeSql.csproj b/FreeSql/FreeSql.csproj
index 18f277ba..ac4e0642 100644
--- a/FreeSql/FreeSql.csproj
+++ b/FreeSql/FreeSql.csproj
@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFramework>netstandard2.0</TargetFramework>
-		<Version>0.4.5</Version>
+		<Version>0.4.9</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql is the most convenient ORM in dotnet. It supports Mysql, Postgresql, SqlServer, Oracle and Sqlite.</Description>
diff --git a/FreeSql/Internal/CommonExpression.cs b/FreeSql/Internal/CommonExpression.cs
index 040dd439..56efbddf 100644
--- a/FreeSql/Internal/CommonExpression.cs
+++ b/FreeSql/Internal/CommonExpression.cs
@@ -306,6 +306,14 @@ namespace FreeSql.Internal {
 					return $"case when {ExpressionLambdaToSql(condExp.Test, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style)} then {ExpressionLambdaToSql(condExp.IfTrue, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style)} else {ExpressionLambdaToSql(condExp.IfFalse, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style)} end";
 				case ExpressionType.Call:
 					var exp3 = exp as MethodCallExpression;
+					var callType = exp3.Object?.Type ?? exp3.Method.DeclaringType;
+					switch (callType.FullName) {
+						case "System.String": return ExpressionLambdaToSqlCallString(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
+						case "System.Math": return ExpressionLambdaToSqlCallMath(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
+						case "System.DateTime": return ExpressionLambdaToSqlCallDateTime(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
+						case "System.TimeSpan": return ExpressionLambdaToSqlCallTimeSpan(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
+						case "System.Convert": return ExpressionLambdaToSqlCallConvert(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
+					}
 					if (exp3.Method.Name == "Equals" && exp3.Object != null && exp3.Arguments.Count > 0) {
 						var tmptryoper = "=";
 						var tmpleft = ExpressionLambdaToSql(exp3.Object, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
@@ -318,14 +326,6 @@ namespace FreeSql.Internal {
 						if (tmpright == "NULL") tmptryoper = " IS ";
 						return $"{tmpleft}{tmptryoper}{tmpright}";
 					}
-					var callType = exp3.Object?.Type ?? exp3.Method.DeclaringType;
-					switch (callType.FullName) {
-						case "System.String": return ExpressionLambdaToSqlCallString(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
-						case "System.Math": return ExpressionLambdaToSqlCallMath(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
-						case "System.DateTime": return ExpressionLambdaToSqlCallDateTime(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
-						case "System.TimeSpan": return ExpressionLambdaToSqlCallTimeSpan(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
-						case "System.Convert": return ExpressionLambdaToSqlCallConvert(exp3, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName, isDisableDiyParse, style);
-					}
 					if (callType.FullName.StartsWith("FreeSql.ISelectGroupingAggregate`")) {
 						switch (exp3.Method.Name) {
 							case "Count": return "count(1)";