增加表关联新建功能，同时修复数据库bug

db/hotimedb.go

@@ -440,8 +440,11 @@ func (that *HoTimeDB) Select(table string, qu ...interface{}) []Map {
 	} else {
 		query += " *"
 	}
-
-	query += " FROM " + that.Prefix + table
+	if !strings.Contains(table, ".") && !strings.Contains(table, " AS ") {
+		query += " FROM `" + that.Prefix + table + "`"
+	} else {
+		query += " FROM " + that.Prefix + table
+	}
 
 	if join {
 		for k, v := range qu[0].(Map) {
@@ -919,7 +922,7 @@ func (that *HoTimeDB) cond(tag string, data Map) (string, []interface{}) {
 // Update 更新数据
 func (that *HoTimeDB) Update(table string, data Map, where Map) int64 {
 
-	query := "UPDATE " + that.Prefix + table + " SET "
+	query := "UPDATE `" + that.Prefix + table + "` SET "
 	//UPDATE Person SET Address = 'Zhongshan 23', City = 'Nanjing' WHERE LastName = 'Wilson'
 	qs := make([]interface{}, 0)
 	tp := len(data)
@@ -1007,7 +1010,7 @@ func (that *HoTimeDB) Insert(table string, data map[string]interface{}) int64 {
 		}
 
 	}
-	query := "INSERT INTO " + that.Prefix + table + queryString + "VALUES" + valueString
+	query := "INSERT INTO `" + that.Prefix + table + "` " + queryString + "VALUES" + valueString
 
 	res, err := that.Exec(query, values...)