diff --git a/chain.go b/chain.go
index 620f9d40..d17cda24 100644
--- a/chain.go
+++ b/chain.go
@@ -37,6 +37,10 @@ func (s *Chain) err(err error) error {
 	return err
 }
 
+func (s *Chain) hasError() bool {
+	return len(s.Errors) > 0
+}
+
 func (s *Chain) deleteLastError() {
 	s.Error = nil
 	s.Errors = s.Errors[:len(s.Errors)-1]
diff --git a/do.go b/do.go
index cb60fbdc..d80693aa 100644
--- a/do.go
+++ b/do.go
@@ -55,7 +55,7 @@ func (s *Do) err(err error) error {
 }
 
 func (s *Do) hasError() bool {
-	return len(s.chain.Errors) > 0
+	return s.chain.hasError()
 }
 
 func (s *Do) setModel(value interface{}) *Do {
@@ -76,10 +76,12 @@ func (s *Do) addToVars(value interface{}) string {
 func (s *Do) exec(sqls ...string) (err error) {
 	if s.hasError() {
 		return
-	} else if len(sqls) > 0 {
-		_, err = s.db.Exec(sqls[0])
-	} else if len(s.sql) > 0 {
+	} else {
+		if len(sqls) > 0 {
+			s.sql = sqls[0]
+		}
 		_, err = s.db.Exec(s.sql, s.sqlVars...)
+		slog(s.sql, s.sqlVars...)
 	}
 	return s.err(err)
 }
@@ -187,6 +189,7 @@ func (s *Do) create() (i interface{}) {
 				s.err(err)
 			}
 		}
+		slog(s.sql, s.sqlVars...)
 
 		if !s.hasError() {
 			result := reflect.Indirect(reflect.ValueOf(s.value))
@@ -382,6 +385,7 @@ func (s *Do) query() {
 	s.prepareQuerySql()
 	if !s.hasError() {
 		rows, err := s.db.Query(s.sql, s.sqlVars...)
+		slog(s.sql, s.sqlVars...)
 		if s.err(err) != nil {
 			return
 		}
@@ -437,6 +441,7 @@ func (s *Do) count(value interface{}) {
 	s.prepareQuerySql()
 	if !s.hasError() {
 		rows, err := s.db.Query(s.sql, s.sqlVars...)
+		slog(s.sql, s.sqlVars...)
 		if s.err(err) != nil {
 			return
 		}
@@ -466,6 +471,7 @@ func (s *Do) pluck(column string, value interface{}) {
 
 	if !s.hasError() {
 		rows, err := s.db.Query(s.sql, s.sqlVars...)
+		slog(s.sql, s.sqlVars...)
 		if s.err(err) != nil {
 			return
 		}
diff --git a/gorm_test.go b/gorm_test.go
index 5d2265da..0cbe21f8 100644
--- a/gorm_test.go
+++ b/gorm_test.go
@@ -86,7 +86,7 @@ func init() {
 	// GRANT ALL ON gorm.* TO 'gorm'@'localhost';
 	// db, err = Open("mysql", "gorm:gorm@/gorm?charset=utf8&parseTime=True")
 	// db, err = Open("sqlite3", "/tmp/gorm.db")
-	db.LogMode(true)
+	db.LogMode(false)
 
 	if err != nil {
 		panic(fmt.Sprintf("No error should happen when connect database, but got %+v", err))
diff --git a/logger.go b/logger.go
index fb344997..a67eabfa 100644
--- a/logger.go
+++ b/logger.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"regexp"
 )
 
 var logger interface{}
@@ -13,7 +14,7 @@ type Logger interface {
 	Print(v ...interface{})
 }
 
-func Print(level string, v ...interface{}) {
+func print(level string, v ...interface{}) {
 	if logger_disabled {
 		return
 	}
@@ -29,13 +30,17 @@ func Print(level string, v ...interface{}) {
 }
 
 func warn(v ...interface{}) {
-	go Print("warn", v...)
+	go print("warn", v...)
 }
 
 func info(v ...interface{}) {
-	go Print("info", v...)
+	go print("info", v...)
+}
+
+func slog(sql string, vars ...interface{}) {
+	go print("sql", fmt.Sprintf(regexp.MustCompile(`\$\d|\?`).ReplaceAllString(sql, "'%v'"), vars...))
 }
 
 func debug(v ...interface{}) {
-	go Print("debug", v...)
+	go print("debug", v...)
 }