From 91af060e8a479acc36c495a2d968ef822c1f2577 Mon Sep 17 00:00:00 2001
From: John <john@johng.cn>
Date: Wed, 18 Apr 2018 16:32:54 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E6=95=B0=E6=8D=AE=E5=BA=93Ge?=
 =?UTF-8?q?tOne/One=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 g/database/gdb/gdb_base.go   | 5 ++++-
 g/database/gdb/gdb_linkop.go | 5 ++++-
 geg/database/mysql/mysql.go  | 6 +++++-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/g/database/gdb/gdb_base.go b/g/database/gdb/gdb_base.go
index 9f4fcf127..5e720a5fd 100644
--- a/g/database/gdb/gdb_base.go
+++ b/g/database/gdb/gdb_base.go
@@ -108,7 +108,10 @@ func (db *Db) GetOne(query string, args ...interface{}) (Map, error) {
     if err != nil {
         return nil, err
     }
-    return list[0], nil
+    if len(list) > 0 {
+        return list[0], nil
+    }
+    return nil, nil
 }
 
 // 数据库查询，获取查询字段值
diff --git a/g/database/gdb/gdb_linkop.go b/g/database/gdb/gdb_linkop.go
index 20a5bc575..3abb61fa1 100644
--- a/g/database/gdb/gdb_linkop.go
+++ b/g/database/gdb/gdb_linkop.go
@@ -261,7 +261,10 @@ func (op *DbOp) One() (Map, error) {
     if err != nil {
         return nil, err
     }
-    return list[0], nil
+    if len(list) > 0 {
+        return list[0], nil
+    }
+    return nil, nil
 }
 
 // 链式操作，查询字段值
diff --git a/geg/database/mysql/mysql.go b/geg/database/mysql/mysql.go
index 6e18879a5..4fb6bdb64 100644
--- a/geg/database/mysql/mysql.go
+++ b/geg/database/mysql/mysql.go
@@ -446,7 +446,7 @@ func main() {
     //save()
     //batchInsert()
     //update1()
-    update2()
+    //update2()
     //update3()
     //linkopSelect1()
     //linkopSelect2()
@@ -457,4 +457,8 @@ func main() {
     //keepPing()
     //transaction1()
     //transaction2()
+
+    m, e := db.Table("user").Fields("uid,name").Where("uid = ?", 4).One()
+    fmt.Println(e)
+    fmt.Println(m)
 }
\ No newline at end of file