diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index e585c11a7..2267a27b0 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -597,6 +597,7 @@ namespace SqlSugar
         {
             var whereExp = DynamicCoreHelper.GetWhere(keyIsShortName_ValueIsType_Dictionary,onExpString);
             var name=whereExp.Parameters.Last(it => it.Type == JoinType).Name;
+            this.Context.InitMappingInfo(JoinType);
             var sql = this.QueryBuilder.GetExpressionValue(whereExp, ResolveExpressType.WhereMultiple).GetResultString();
             return AddJoinInfo(JoinType, name, sql,type);
         }