From 2e6ba63ed9e0424f62ec6b1a813ae7fec58a4ff1 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Mon, 18 Apr 2016 17:14:22 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9Bwhere=E6=96=B9=E6=B3=95?=
 =?UTF-8?q?=E4=BC=A0=E7=A9=BA=E5=80=BC?=
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---
 library/think/db/Query.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index 6bca6b0a..216fa440 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -462,9 +462,11 @@ class Query
             if (is_array($field)) {
                 // 数组批量查询
                 $where = $field;
-            } else {
+            } elseif ($field) {
                 // 字符串查询
                 $where[] = ['exp', $field];
+            } else {
+                $where = '';
             }
         } elseif (is_array($op)) {
             $param = func_get_args();