Update exp to sql

Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_Helper.cs

@@ -265,6 +265,31 @@ namespace SqlSugar
             {
                 model.Args.Add(GetMethodCallArgs(parameter, (item as MemberExpression).Expression));
             }
+            else if (isBoolValue && isIIF && item is MemberExpression&&ExpressionTool.GetParameters(item).Count()==0) 
+            { 
+                var expValue = GetNewExpressionValue(item);
+                expValue = this.Context.DbMehtods.Equals(new MethodCallExpressionModel()
+                {
+                    Name = "Equals",
+                    Args = new List<MethodCallExpressionArgs>()
+                        {
+                             new MethodCallExpressionArgs(){
+                               IsMember=true,
+                               MemberName=expValue
+                             },
+                             new MethodCallExpressionArgs(){
+                               IsMember=true,
+                               MemberName= Context.DbMehtods.TrueValue()
+                             } 
+                        }
+                });
+                model.Args.Add(new MethodCallExpressionArgs()
+                {
+                    IsMember = false,
+                    MemberName = expValue,
+                    MemberValue = expValue
+                });
+            }
             else if (isBoolValue && isIIF && item is MemberExpression)
             {
                 var argItem = GetMethodCallArgs(parameter, (item as MemberExpression).Expression);

Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>SqlSugarCore</id>
-    <version>5.1.4.138-preview07</version>
+    <version>5.1.4.138-preview09</version>
     <authors>sunkaixuan</authors>
     <owners>果糖大数据科技</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>