diff --git a/do.go b/do.go
index 32e974c7..fe483927 100644
--- a/do.go
+++ b/do.go
@@ -536,7 +536,7 @@ func (s *Do) buildWhereCondition(clause map[string]interface{}) (str string) {
 		m := &Model{data: query, do: s}
 		var sqls []string
 		for _, field := range m.columnsHasValue("other") {
-			sqls = append(sqls, fmt.Sprintf(" (%v = %v) ", field.DbName, s.addToVars(field.Value)))
+			sqls = append(sqls, fmt.Sprintf("(%v = %v)", field.DbName, s.addToVars(field.Value)))
 		}
 		return strings.Join(sqls, " AND ")
 	}
@@ -573,10 +573,10 @@ func (s *Do) buildNotCondition(clause map[string]interface{}) (str string) {
 			return fmt.Sprintf("(%v <> %v)", s.model.primaryKeyDb(), id)
 		} else if regexp.MustCompile("(?i) (=|<>|>|<|LIKE|IS) ").MatchString(value) {
 			str = fmt.Sprintf(" NOT (%v) ", value)
-			not_equal_sql = fmt.Sprintf(" NOT (%v) ", value)
+			not_equal_sql = fmt.Sprintf("NOT (%v)", value)
 		} else {
-			str = fmt.Sprintf(" (%v NOT IN (?)) ", value)
-			not_equal_sql = fmt.Sprintf(" (%v <> ?) ", value)
+			str = fmt.Sprintf("(%v NOT IN (?))", value)
+			not_equal_sql = fmt.Sprintf("(%v <> ?)", value)
 		}
 	case int, int64, int32:
 		return fmt.Sprintf("(%v <> %v)", s.model.primaryKeyDb(), query)
@@ -626,7 +626,7 @@ func (s *Do) whereSql() (sql string) {
 	var primary_condiations, and_conditions, or_conditions []string
 
 	if !s.unscoped && s.model.hasColumn("DeletedAt") {
-		primary_condiations = append(primary_condiations, "(deleted_at is null or deleted_at <= '0001-01-02')")
+		primary_condiations = append(primary_condiations, "(deleted_at IS NULL OR deleted_at <= '0001-01-02')")
 	}
 
 	if !s.model.primaryKeyZero() {
diff --git a/logger.go b/logger.go
index 2caf9a5c..407738dd 100644
--- a/logger.go
+++ b/logger.go
@@ -5,6 +5,7 @@ import (
 	"log"
 	"os"
 	"regexp"
+
 	"time"
 )
 
@@ -12,14 +13,44 @@ type Logger interface {
 	Print(v ...interface{})
 }
 
+type defaultLogger struct {
+	*log.Logger
+}
+
+func (logger defaultLogger) Print(v ...interface{}) {
+	if len(v) > 1 {
+		level := v[0]
+		tim := "\033[33m[" + time.Now().Format("2006-01-02 15:04:05") + "]\033[0m"
+
+		if level == "sql" {
+			dur := v[1]
+			sql := fmt.Sprintf(regexp.MustCompile(`(\$\d+)|\?`).ReplaceAllString(v[2].(string), "'%v'"), v[3].([]interface{})...)
+			dur = fmt.Sprintf(" \033[36;1m[%.2fms]\033[0m ", float64(dur.(time.Duration).Nanoseconds()/1e4)/100.0)
+			logger.Println(tim, dur, sql)
+		} else {
+			messages := []interface{}{"\033[31m"}
+			messages = append(messages, v...)
+			messages = append(messages, "\033[0m")
+			logger.Println(messages...)
+		}
+	}
+}
+
+var default_logger defaultLogger
+
+func init() {
+	// default_logger = log.New(os.Stdout, "\r\n", 0)
+	default_logger = defaultLogger{log.New(os.Stdout, "\r\n", 0)}
+}
+
 func (s *Chain) print(level string, v ...interface{}) {
 	if s.d.log_mode || s.debug_mode || level == "debug" {
 		if _, ok := s.d.logger.(Logger); !ok {
 			fmt.Println("logger haven't been set, using os.Stdout")
-			s.d.logger = log.New(os.Stdout, "", 0)
+			s.d.logger = default_logger
 		}
 		args := []interface{}{level}
-		s.d.logger.(Logger).Print(append(args, v...))
+		s.d.logger.(Logger).Print(append(args, v...)...)
 	}
 }
 
@@ -28,7 +59,7 @@ func (s *Chain) warn(v ...interface{}) {
 }
 
 func (s *Chain) slog(sql string, t time.Time, vars ...interface{}) {
-	go s.print("sql", time.Now().Sub(t), fmt.Sprintf(regexp.MustCompile(`\$\d|\?`).ReplaceAllString(sql, "'%v'"), vars...))
+	go s.print("sql", time.Now().Sub(t), sql, vars)
 }
 
 func (s *Chain) debug(v ...interface{}) {