-

Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs

@@ -110,6 +110,7 @@ namespace SqlSugar
         public abstract string SqlTranslationRight { get; }
         public virtual string SqlFalse { get { return "1=2 "; } }
         public virtual string SqlDateNow { get { return "GETDATE()"; } }
+        public virtual string SqlSelectAll { get { return "*"; } }
         #endregion
     }
 }

Src/Asp.Net/SqlSugar/Interface/ISqlBuilder.cs

@@ -1,7 +1,9 @@
 using System;
 using System.Collections.Generic;
 using System.Data;
+using System.Dynamic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Text;
 using System.Threading.Tasks;
 namespace SqlSugar
@@ -12,8 +14,7 @@ namespace SqlSugar
         CommandType CommandType { get; set; }
         String AppendWhereOrAnd(bool isWhere, string sqlString);
         string AppendHaving(string sqlString);
-        string SqlTranslationLeft { get; }
+
-        string SqlTranslationRight { get; } 
         SqlQueryBuilder SqlQueryBuilder { get; set; }
         QueryBuilder QueryBuilder { get; set; }
         InsertBuilder InsertBuilder { get; set; }
@@ -23,6 +24,9 @@ namespace SqlSugar
         string SqlParameterKeyWord { get; }
         string SqlFalse { get; }
         string SqlDateNow { get; }
+        string SqlTranslationLeft { get; }
+        string SqlTranslationRight { get; }
+        string SqlSelectAll { get;  }
 
         string GetTranslationTableName(string name);
         string GetTranslationColumnName(string entityName, string propertyName);

Src/Asp.Net/SqlSugar/SqlSugarClient.cs

@@ -333,7 +333,7 @@ namespace SqlSugar
             var allParameters = allItems.SelectMany(it => it.Value).ToArray();
             var resulut = base.Context.Queryable<ExpandoObject>().AS(UtilMethods.GetPackTable(allSql, "unionTable"));
             resulut.AddParameters(allParameters);
-            return resulut.Select<T>("*");
+            return resulut.Select<T>(sqlBuilder.SqlSelectAll);
         }
         public virtual ISugarQueryable<T> UnionAll<T>(List<ISugarQueryable<T>> queryables) where T : class, new()
         {