diff --git a/chain.go b/chain.go
index 5046c16..bb96d62 100644
--- a/chain.go
+++ b/chain.go
@@ -39,7 +39,7 @@ func NewQuery(t ...string) *Query {
 			conn_type = DB
 
 		case "mssql": //sql server
-			conn_type = MSDB_CONNDB
+			conn_type = MSDB_CONN
 
 		}
 	}
diff --git a/sqlserver.go b/sqlserver.go
index cb03e3a..8675d26 100644
--- a/sqlserver.go
+++ b/sqlserver.go
@@ -2,6 +2,8 @@ package dbquery
 
 import (
 	"database/sql"
+	"errors"
+	"fmt"
 
 	"log"