From 363fd4d90312f2cfa427535b7ea01a097ca8db1b Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Mon, 26 Mar 2018 14:17:25 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9Binc=E5=92=8Cdec=E6=9F=A5?=
 =?UTF-8?q?=E8=AF=A2?=
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---
 library/think/db/Builder.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/library/think/db/Builder.php b/library/think/db/Builder.php
index 7333bc98..cd948dad 100644
--- a/library/think/db/Builder.php
+++ b/library/think/db/Builder.php
@@ -116,10 +116,14 @@ abstract class Builder
                         $result[$item] = $val[1];
                         break;
                     case 'inc':
-                        $result[$item] = $this->parseKey($val[1]) . '+' . floatval($val[2]);
+                        if ($key == $val[1]) {
+                            $result[$item] = $this->parseKey($val[1]) . '+' . floatval($val[2]);
+                        }
                         break;
                     case 'dec':
-                        $result[$item] = $this->parseKey($val[1]) . '-' . floatval($val[2]);
+                        if ($key == $val[1]) {
+                            $result[$item] = $this->parseKey($val[1]) . '-' . floatval($val[2]);
+                        }
                         break;
                 }
             } elseif (is_scalar($val)) {