Fix Limit expression in SqlServer

Author: mythz

src/ServiceStack.OrmLite.SqlServer/SqlServerExpression.cs

@@ -37,14 +37,12 @@ public override string ToSelectStatement()
 	        OrderByExpression = String.Empty; // Required because ordering is done by Windowing function
 
             //todo: review needed only check against sql server 2008 R2
-
-	        var selectExpression = SelectExpression.Remove(SelectExpression.IndexOf("FROM")).Trim(); //0
 	        var tableName = OrmLiteConfig.DialectProvider.GetQuotedTableName(ModelDef).Trim(); //2
 	        var statement = string.Format("{0} {1} {2}", WhereExpression, GroupByExpression, HavingExpression).Trim(); 
 
 	        var retVal = string.Format(
 	            "{0} FROM (SELECT ROW_NUMBER() OVER ({1}) As RowNum, * FROM {2} {3}) AS RowConstrainedResult WHERE RowNum > {4} AND RowNum <= {5}",
-	            selectExpression,
+                SelectExpression,
 	            orderBy,
 	            tableName,
                 statement,

src/ServiceStack.OrmLite.SqlServerTests/SqlServerExpressionVisitorQueryTest.cs

@@ -105,14 +105,12 @@ public void test_if_and_works_with_nullable_parameter()
             using(var db = OpenDbConnection())
             {
                 db.CreateTable<TestEntity>(true);
-                db.Insert(new TestEntity
+                var id = db.Insert(new TestEntity
                 {
                     Foo = this.RandomString(16),
                     Bar = this.RandomString(16),
                     Baz = this.RandomDecimal()
-                });
-
-                var id = (int)db.LastInsertId();
+                }, selectIdentity: true);
 
                 var ev = OrmLiteConfig.DialectProvider.SqlExpression<TestEntity>();
                 ev.Where(e => e.Id == id);