From f1b7a0d714fdb06e9f2a235baad11537fc7e7553 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Wed, 20 Dec 2023 18:54:01 +0800
Subject: [PATCH] Performance optimization

---
 .../SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Item.cs   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Item.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Item.cs
index 1e71b63f4..2a76312f1 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Item.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve_Item.cs
@@ -72,6 +72,7 @@ namespace SqlSugar
             else if (ExpressionTool.GetMethodName(item) == "IsNull"
                               && this.Context.SingleTableNameSubqueryShortName == null
                               && this.BaseParameter?.CurrentExpression is NewExpression
+                              && (item as MethodCallExpression)?.Arguments?.FirstOrDefault() is MethodCallExpression
                               && item?.ToString()?.Contains("Join") == true
                               && ExpressionTool.GetParameters(this.BaseParameter?.CurrentExpression).Count() > 1)
             {