Add Select Into overloads

Author: mythz

src/ServiceStack.OrmLite/Expressions/ReadConnectionExtensions.cs

@@ -114,6 +114,14 @@ public static List<T> Select<T>(this IDbConnection dbConn, SqlExpression<T> expr
             return dbConn.Exec(dbCmd => dbCmd.Select(expression));
         }
 
+        /// <summary>
+        /// Project results from a number of joined tables into a different model
+        /// </summary>
+        public static List<Into> Select<Into, From>(this IDbConnection dbConn, SqlExpression<From> expression)
+        {
+            return dbConn.Exec(dbCmd => dbCmd.Select<Into, From>(expression));
+        }
+
         /// <summary>
         /// Project results from a number of joined tables into a different model
         /// </summary>

src/ServiceStack.OrmLite/Expressions/ReadExtensions.cs

@@ -29,6 +29,12 @@ internal static List<Into> Select<Into, From>(this IDbCommand dbCmd, Func<SqlExp
             return dbCmd.ExprConvertToList<Into>(sql);
         }
 
+        internal static List<Into> Select<Into, From>(this IDbCommand dbCmd, SqlExpression<From> expression)
+        {
+            string sql = expression.SelectInto<Into>();
+            return dbCmd.ExprConvertToList<Into>(sql);
+        }
+
         internal static List<T> Select<T>(this IDbCommand dbCmd, SqlExpression<T> expression)
         {
             string sql = expression.SelectInto<T>();

src/ServiceStack.OrmLite/Expressions/SqlExpression.cs

@@ -145,8 +145,13 @@ public virtual SqlExpression<T> Where()
 
         public virtual SqlExpression<T> Where(string sqlFilter, params object[] filterParams)
         {
-            whereExpression = !string.IsNullOrEmpty(sqlFilter) ? sqlFilter.SqlFmt(filterParams) : string.Empty;
-            if (!string.IsNullOrEmpty(whereExpression)) whereExpression = (WhereStatementWithoutWhereString ? "" : "WHERE ") + whereExpression;
+            whereExpression = !string.IsNullOrEmpty(sqlFilter) 
+                ? sqlFilter.SqlFmt(filterParams) 
+                : string.Empty;
+            
+            if (!string.IsNullOrEmpty(whereExpression)) 
+                whereExpression = (WhereStatementWithoutWhereString ? "" : "WHERE ") + whereExpression;
+            
             return this;
         }
 
@@ -1041,17 +1046,15 @@ protected virtual string BindOperant(ExpressionType e)
 
         protected virtual string GetQuotedColumnName(string memberName)
         {
-
             if (useFieldName)
             {
-                FieldDefinition fd = modelDef.FieldDefinitions.FirstOrDefault(x => x.Name == memberName);
-                string fn = fd != default(FieldDefinition) ? fd.FieldName : memberName;
+                var fd = modelDef.FieldDefinitions.FirstOrDefault(x => x.Name == memberName);
+                var fn = fd != null 
+                    ? fd.FieldName 
+                    : memberName;
                 return DialectProvider.GetQuotedColumnName(fn);
             }
-            else
-            {
-                return memberName;
-            }
+            return memberName;
         }
 
         protected string RemoveQuoteFromAlias(string exp)