From f295f2cd1ae88f95361fa5ccfaac4f9a197b1c98 Mon Sep 17 00:00:00 2001
From: 2881099 <2881099@qq.com>
Date: Fri, 17 Feb 2023 17:56:37 +0800
Subject: [PATCH] =?UTF-8?q?-=20=E4=BC=98=E5=8C=96=20IUpdate.Set(xx,=20null?=
 =?UTF-8?q?)=20=E7=9A=84=E6=83=85=E5=86=B5=EF=BC=9B?=
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---
 FreeSql/Internal/CommonProvider/UpdateProvider.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/FreeSql/Internal/CommonProvider/UpdateProvider.cs b/FreeSql/Internal/CommonProvider/UpdateProvider.cs
index 5e786eff..9117e0c6 100644
--- a/FreeSql/Internal/CommonProvider/UpdateProvider.cs
+++ b/FreeSql/Internal/CommonProvider/UpdateProvider.cs
@@ -655,6 +655,11 @@ namespace FreeSql.Internal.CommonProvider
             if (col.Attribute.MapType == col.CsType) val = value;
             else val = Utils.GetDataReaderValue(col.Attribute.MapType, value);
             _set.Append(", ").Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" = ");
+            if (value == null)
+            {
+                _set.Append("NULL");
+                return;
+            }
 
             var colsql = _noneParameter ? _commonUtils.GetNoneParamaterSqlValue(_params, "u", col, col.Attribute.MapType, val) :
                 _commonUtils.QuoteWriteParamterAdapter(col.Attribute.MapType, _commonUtils.QuoteParamterName($"p_{_params.Count}"));