diff --git a/.example/frame/mvc/model/test/init.go b/.example/frame/mvc/model/test/Initialization.go
similarity index 100%
rename from .example/frame/mvc/model/test/init.go
rename to .example/frame/mvc/model/test/Initialization.go
diff --git a/.example/frame/mvc/model/test/user.go b/.example/frame/mvc/model/test/User.go
similarity index 100%
rename from .example/frame/mvc/model/test/user.go
rename to .example/frame/mvc/model/test/User.go
diff --git a/.example/other/test.go b/.example/other/test.go
index a183344e2..efc86bd9a 100644
--- a/.example/other/test.go
+++ b/.example/other/test.go
@@ -1,13 +1,23 @@
 package main
 
 import (
-	"fmt"
-	"github.com/gogf/gf/internal/utilbytes"
+	"os"
+
+	"github.com/olekukonko/tablewriter"
 )
 
 func main() {
-	b := []byte{48, 49, 50, 51, 52, 53}
-	fmt.Println(string(b))
-	fmt.Println([]byte("\xff\xff"))
-	fmt.Printf(utilbytes.Export(b))
+	data := [][]string{
+		[]string{"1/1/2014", "Domain name", "2233", "$10.98"},
+		[]string{"1/1/2014", "January Hosting", "2233", "$54.95"},
+		[]string{"1/4/2014", "February Hosting", "2233", "$51.00"},
+		[]string{"1/4/2014", "February Extra Bandwidth", "2233", "$30.00"},
+	}
+
+	table := tablewriter.NewWriter(os.Stdout)
+	table.SetBorder(false)
+	table.SetRowLine(false)
+	table.SetColumnSeparator("")
+	table.AppendBulk(data)
+	table.Render()
 }
diff --git a/database/gdb/gdb_structure.go b/database/gdb/gdb_structure.go
index b88c459a0..374f38a7c 100644
--- a/database/gdb/gdb_structure.go
+++ b/database/gdb/gdb_structure.go
@@ -10,6 +10,8 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/gogf/gf/text/gstr"
+
 	"github.com/gogf/gf/os/gtime"
 
 	"github.com/gogf/gf/encoding/gbinary"
@@ -27,9 +29,15 @@ func (bs *dbBase) convertValue(fieldValue []byte, fieldType string) interface{}
 		return fieldValue
 
 	case "int", "tinyint", "small_int", "medium_int":
+		if gstr.ContainsI(fieldType, "unsigned") {
+			gconv.Uint(string(fieldValue))
+		}
 		return gconv.Int(string(fieldValue))
 
 	case "big_int":
+		if gstr.ContainsI(fieldType, "unsigned") {
+			gconv.Uint64(string(fieldValue))
+		}
 		return gconv.Int64(string(fieldValue))
 
 	case "float", "double", "decimal":
diff --git a/os/gcfg/gcfg_config.go b/os/gcfg/gcfg_config.go
index daa60a7ec..b33087ea4 100644
--- a/os/gcfg/gcfg_config.go
+++ b/os/gcfg/gcfg_config.go
@@ -41,7 +41,7 @@ func GetContent(file ...string) string {
 	return configs.Get(name)
 }
 
-// RemoveConfig removes the global configuration with specified group.
+// RemoveConfig removes the global configuration with specified <file>.
 // If <name> is not passed, it removes configuration of the default group name.
 func RemoveConfig(file ...string) {
 	name := DEFAULT_CONFIG_FILE