diff --git a/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/FastBuilder.cs b/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/FastBuilder.cs
index bb6e9b34e..18225bf1d 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/FastBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/FastBuilder.cs
@@ -38,8 +38,8 @@ namespace SqlSugar
         public virtual async Task CreateTempAsync<T>(DataTable dt) where T : class, new()
         {
             await this.Context.UnionAll(
-                this.Context.Queryable<T>().Where(it => false).AS(dt.TableName),
-                this.Context.Queryable<T>().Where(it => false).AS(dt.TableName)).Select("top 1 * into #temp").ToListAsync();
+                this.Context.Queryable<T>().Select("*").Where(it => false).AS(dt.TableName),
+                this.Context.Queryable<T>().Select("*").Where(it => false).AS(dt.TableName)).Select("top 1 * into #temp").ToListAsync();
             dt.TableName = "#temp";
         }
     }
diff --git a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlFastBuilder.cs b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlFastBuilder.cs
index 2556d46f0..7955e6a95 100644
--- a/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlFastBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/MySql/SqlBuilder/MySqlFastBuilder.cs
@@ -65,7 +65,7 @@ namespace SqlSugar
         public override async Task CreateTempAsync<T>(DataTable dt) 
         {
             dt.TableName = "temp"+SnowFlakeSingle.instance.getID();
-            var sql = this.Context.Queryable<T>().Where(it => false).ToSql().Key;
+            var sql = this.Context.Queryable<T>().Select("*").Where(it => false).ToSql().Key;
             await this.Context.Ado.ExecuteCommandAsync($"Create TEMPORARY  table {dt.TableName}({sql}) ");
         }
     }