diff --git a/sql2go/define.go b/sql2go/define.go
index b89a632..d43356f 100644
--- a/sql2go/define.go
+++ b/sql2go/define.go
@@ -7,47 +7,50 @@
 // Date : 2021-10-25 4:50 下午
 package sql2go
 
+import "git.zhangdeman.cn/zhangdeman/consts"
+
 // sqlTypeMap mysql数据类型 => go 数据类型映射
 //
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 4:50 下午 2021/10/25
 var sqlTypeMap = map[string]string{
-	"int":                "int",
-	"integer":            "int",
-	"tinyint":            "int8",
-	"smallint":           "int16",
-	"mediumint":          "int32",
-	"bigint":             "int64",
-	"int unsigned":       "uint",
-	"integer unsigned":   "uint",
-	"tinyint unsigned":   "uint8",
-	"smallint unsigned":  "uint16",
-	"mediumint unsigned": "uint32",
-	"bigint unsigned":    "uint64",
+	"int":                consts.DataTypeInt.String(),
+	"integer":            consts.DataTypeInt.String(),
+	"tinyint":            consts.DataTypeInt8.String(),
+	"smallint":           consts.DataTypeInt16.String(),
+	"mediumint":          consts.DataTypeInt32.String(),
+	"bigint":             consts.DataTypeInt64.String(),
+	"int unsigned":       consts.DataTypeUint.String(),
+	"integer unsigned":   consts.DataTypeUint.String(),
+	"tinyint unsigned":   consts.DataTypeUint8.String(),
+	"smallint unsigned":  consts.DataTypeUint16.String(),
+	"mediumint unsigned": consts.DataTypeUint32.String(),
+	"bigint unsigned":    consts.DataTypeUint64.String(),
 	"bit":                "byte",
-	"bool":               "bool",
-	"enum":               "string",
-	"set":                "string",
-	"varchar":            "string",
-	"char":               "string",
-	"tinytext":           "string",
-	"mediumtext":         "string",
-	"text":               "string",
-	"longtext":           "string",
-	"blob":               "string",
-	"tinyblob":           "string",
-	"mediumblob":         "string",
-	"longblob":           "string",
+	"bool":               consts.DataTypeBool.String(),
+	"enum":               consts.DataTypeString.String(),
+	"set":                consts.DataTypeString.String(),
+	"varchar":            consts.DataTypeString.String(),
+	"char":               consts.DataTypeString.String(),
+	"tinytext":           consts.DataTypeString.String(),
+	"mediumtext":         consts.DataTypeString.String(),
+	"text":               consts.DataTypeString.String(),
+	"longtext":           consts.DataTypeString.String(),
+	"blob":               consts.DataTypeString.String(),
+	"tinyblob":           consts.DataTypeString.String(),
+	"mediumblob":         consts.DataTypeString.String(),
+	"longblob":           consts.DataTypeString.String(),
 	"date":               "time.Time",
 	"datetime":           "time.Time",
 	"timestamp":          "time.Time",
 	"time":               "time.Time",
-	"float":              "float64",
-	"double":             "float64",
-	"decimal":            "float64",
-	"binary":             "string",
-	"varbinary":          "string",
+	"float":              consts.DataTypeFloat64.String(),
+	"double":             consts.DataTypeFloat64.String(),
+	"decimal":            consts.DataTypeFloat64.String(),
+	"binary":             consts.DataTypeString.String(),
+	"varbinary":          consts.DataTypeString.String(),
+	"json":               consts.DataTypeString.String(),
 }
 
 const (
diff --git a/sql2go/parser.go b/sql2go/parser.go
index 0aa588e..73e2c55 100644
--- a/sql2go/parser.go
+++ b/sql2go/parser.go
@@ -9,9 +9,10 @@ package sql2go
 
 import (
 	"errors"
-	wrapperType "git.zhangdeman.cn/zhangdeman/wrapper"
 	"strings"
 
+	wrapperType "git.zhangdeman.cn/zhangdeman/wrapper"
+
 	"github.com/xwb1989/sqlparser"
 )
 
@@ -93,11 +94,14 @@ func generateTable(tableName string, modelStructName string, columnList []*sqlpa
 
 	for _, item := range columnList {
 		comment := ""
-		if item.Type.Comment == nil {
+		if item.Type.Comment == nil || item.Type.Comment.Val == nil {
 			comment = item.Name.String()
 		} else {
 			comment = string(item.Type.Comment.Val)
 		}
+		if comment == "" {
+			comment = item.Name.String()
+		}
 		data := map[string]string{
 			"{FIELD}":         wrapperType.String(item.Name.String()).SnakeCaseToCamel(),
 			"{COLUMN}":        item.Name.String(),
@@ -106,6 +110,10 @@ func generateTable(tableName string, modelStructName string, columnList []*sqlpa
 			"{COMMENT}":       comment,
 			"{TYPE}":          sqlTypeMap[item.Type.Type],
 		}
+		if item.Type.Unsigned {
+			// 无符号
+			data["{TYPE}"] = sqlTypeMap[item.Type.Type+" unsigned"]
+		}
 		/*if data["{FIELD}"] == "ID" {
 			basic.PrimaryFieldType = data["{TYPE}"]
 		}*/
@@ -150,17 +158,20 @@ return "{{TABLE_NAME}}"
 func generateTableColumnDefined(modelStructName string, columnList []*sqlparser.ColumnDefinition) (string, string, string) {
 	columnDefineName := modelStructName + "Column"
 	structFieldResult := "type " + columnDefineName + " struct { \n"
-	structFieldDescInstanceResult := "&" + columnDefineName + "{ \n"
+	structFieldDescInstanceResult := columnDefineName + "{ \n"
 	structFieldCommentInstanceResult := "map[string]string{ \n"
 	for _, column := range columnList {
+		comment := column.Name.String()
+		if nil != column.Type.Comment {
+			comment = string(column.Type.Comment.Val)
+		}
+		if comment == "" {
+			comment = column.Name.String()
+		}
 		dataMap := map[string]string{
-			"{FIELD}":    wrapperType.String(column.Name.String()).SnakeCaseToCamel(),
-			"{JSON_TAG}": column.Name.String(),
-			"{FIELD_COMMENT}": wrapperType.TernaryOperator.String(
-				column.Type.Comment == nil,
-				wrapperType.String(column.Name.String()),
-				wrapperType.String(string(column.Type.Comment.Val)),
-			).Value(),
+			"{FIELD}":         wrapperType.String(column.Name.String()).SnakeCaseToCamel(),
+			"{JSON_TAG}":      column.Name.String(),
+			"{FIELD_COMMENT}": comment,
 		}
 
 		structFieldDefine := TableColumnTpl
@@ -181,7 +192,7 @@ func generateTableColumnDefined(modelStructName string, columnList []*sqlparser.
 	tableColumnFunction := `
 
 // Columns 获取表字段定义
-func ({TABLE_FIRST} {MODEL_STRUCT_NAME}) Columns() *{COLUMN_DEFINED} {
+func ({TABLE_FIRST} {MODEL_STRUCT_NAME}) Columns() {COLUMN_DEFINED} {
 return {STRUCT_FIELD_DESC_DEFINED_RESULT}
 }