diff --git a/dialect_mysql.go b/dialect_mysql.go
index f2b4ff7a..9f5ae3b2 100644
--- a/dialect_mysql.go
+++ b/dialect_mysql.go
@@ -551,9 +551,12 @@ func (db *mysql) CreateTableSql(table *core.Table, tableName, storeEngine, chars
 
 	if len(charset) == 0 {
 		charset = db.URI().Charset
-	} else if len(charset) > 0 {
+	} 
+	if len(charset) != 0 {
 		sql += " DEFAULT CHARSET " + charset
 	}
+	
+	
 
 	if db.rowFormat != "" {
 		sql += " ROW_FORMAT=" + db.rowFormat
diff --git a/dialect_sqlite3.go b/dialect_sqlite3.go
index a55b1615..e1294814 100644
--- a/dialect_sqlite3.go
+++ b/dialect_sqlite3.go
@@ -233,7 +233,7 @@ func (db *sqlite3) TableCheckSql(tableName string) (string, []interface{}) {
 }
 
 func (db *sqlite3) DropIndexSql(tableName string, index *core.Index) string {
-	//var unique string
+	// var unique string
 	quote := db.Quote
 	idxName := index.Name
 
@@ -452,5 +452,9 @@ type sqlite3Driver struct {
 }
 
 func (p *sqlite3Driver) Parse(driverName, dataSourceName string) (*core.Uri, error) {
+	if strings.Contains(dataSourceName, "?") {
+		dataSourceName = dataSourceName[:strings.Index(dataSourceName, "?")]
+	}
+
 	return &core.Uri{DbType: core.SQLITE, DbName: dataSourceName}, nil
 }
diff --git a/engine.go b/engine.go
index d959d01f..89a96d9f 100644
--- a/engine.go
+++ b/engine.go
@@ -245,6 +245,11 @@ func (engine *Engine) AutoIncrStr() string {
 	return engine.dialect.AutoIncrStr()
 }
 
+// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
+func (engine *Engine) SetConnMaxLifetime(d time.Duration) {
+	engine.db.SetConnMaxLifetime(d)
+}
+
 // SetMaxOpenConns is only available for go 1.2+
 func (engine *Engine) SetMaxOpenConns(conns int) {
 	engine.db.SetMaxOpenConns(conns)
diff --git a/engine_group.go b/engine_group.go
index 1de425f3..5eee3e61 100644
--- a/engine_group.go
+++ b/engine_group.go
@@ -5,6 +5,8 @@
 package xorm
 
 import (
+	"time"
+
 	"github.com/go-xorm/core"
 )
 
@@ -99,6 +101,14 @@ func (eg *EngineGroup) SetColumnMapper(mapper core.IMapper) {
 	}
 }
 
+// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
+func (eg *EngineGroup) SetConnMaxLifetime(d time.Duration) {
+	eg.Engine.SetConnMaxLifetime(d)
+	for i := 0; i < len(eg.slaves); i++ {
+		eg.slaves[i].SetConnMaxLifetime(d)
+	}
+}
+
 // SetDefaultCacher set the default cacher
 func (eg *EngineGroup) SetDefaultCacher(cacher core.Cacher) {
 	eg.Engine.SetDefaultCacher(cacher)
diff --git a/engine_maxlife.go b/engine_maxlife.go
deleted file mode 100644
index 22666c5f..00000000
--- a/engine_maxlife.go
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2017 The Xorm Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.6
-
-package xorm
-
-import "time"
-
-// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
-func (engine *Engine) SetConnMaxLifetime(d time.Duration) {
-	engine.db.SetConnMaxLifetime(d)
-}
-
-// SetConnMaxLifetime sets the maximum amount of time a connection may be reused.
-func (eg *EngineGroup) SetConnMaxLifetime(d time.Duration) {
-	eg.Engine.SetConnMaxLifetime(d)
-	for i := 0; i < len(eg.slaves); i++ {
-		eg.slaves[i].SetConnMaxLifetime(d)
-	}
-}
diff --git a/examples/find.go b/examples/find.go
index d80a698c..ae710b8e 100644
--- a/examples/find.go
+++ b/examples/find.go
@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/go-xorm/xorm"
+        _ "github.com/mattn/go-sqlite3"
 )
 
 // User describes a user
diff --git a/interface.go b/interface.go
index 0985372d..33d2078e 100644
--- a/interface.go
+++ b/interface.go
@@ -72,6 +72,7 @@ type EngineInterface interface {
 
 	Before(func(interface{})) *Session
 	Charset(charset string) *Session
+	ClearCache(...interface{}) error
 	CreateTables(...interface{}) error
 	DBMetas() ([]*core.Table, error)
 	Dialect() core.Dialect
@@ -83,16 +84,22 @@ type EngineInterface interface {
 	GetTableMapper() core.IMapper
 	GetTZDatabase() *time.Location
 	GetTZLocation() *time.Location
+	MapCacher(interface{}, core.Cacher) error
 	NewSession() *Session
 	NoAutoTime() *Session
 	Quote(string) string
 	SetCacher(string, core.Cacher)
+	SetConnMaxLifetime(time.Duration)
 	SetDefaultCacher(core.Cacher)
+	SetLogger(logger core.ILogger)
 	SetLogLevel(core.LogLevel)
 	SetMapper(core.IMapper)
+	SetMaxOpenConns(int)
+	SetMaxIdleConns(int)
 	SetSchema(string)
 	SetTZDatabase(tz *time.Location)
 	SetTZLocation(tz *time.Location)
+	ShowExecTime(...bool)
 	ShowSQL(show ...bool)
 	Sync(...interface{}) error
 	Sync2(...interface{}) error
diff --git a/session_get.go b/session_get.go
index 3b2c9493..69194a23 100644
--- a/session_get.go
+++ b/session_get.go
@@ -77,6 +77,9 @@ func (session *Session) nocacheGet(beanKind reflect.Kind, table *core.Table, bea
 	defer rows.Close()
 
 	if !rows.Next() {
+		if rows.Err() != nil {
+			return false, rows.Err()
+		}
 		return false, nil
 	}
 
diff --git a/xorm.go b/xorm.go
index 141c4897..739de8d4 100644
--- a/xorm.go
+++ b/xorm.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build go1.8
+
 package xorm
 
 import (