diff --git a/src/Archiver/Commands/ExportTableCommand.cs b/src/Archiver/Commands/ExportTableCommand.cs
index b5f6e4e..4b3c277 100644
--- a/src/Archiver/Commands/ExportTableCommand.cs
+++ b/src/Archiver/Commands/ExportTableCommand.cs
@@ -152,7 +152,14 @@ namespace Chenfeng.MES.Archiver.Commands
 
                 var valString = new StringBuilder();
 
-                using (var reader = cmd.ExecuteReader())
+                var queryWatch = Stopwatch.StartNew();
+                var reader = cmd.ExecuteReader();
+                queryWatch.Stop();
+                if (queryWatch.ElapsedMilliseconds > 10_000)
+                {
+                    Print("slow sql:" + sql + ",page:" + pageIndex);
+                }
+                using (reader)
                 {
                     if (columnString.Length == 0)
                     {
@@ -166,32 +173,38 @@ namespace Chenfeng.MES.Archiver.Commands
 
                     while (reader.Read())
                     {
-                        var row = new List<object>();
+                        //var row = new List<object>();
+                        valString.Append('(');
                         for (int i = 0; i < reader.FieldCount; i++)
                         {
                             var val = reader.GetValue(i);
-
+                            object newVal;
                             switch (val)
                             {
                                 case bool b:
-                                    row.Add(b ? 1 : 0);
+                                    newVal = b ? 1 : 0;
                                     break;
                                 case string s:
-                                    row.Add($"'{s}'");
+                                    newVal = $"'{s}'";
                                     break;
                                 case DateTime dt:
-                                    row.Add('\'' + dt.ToString("yyyy-MM-dd HH:mm:ss") + '\'');
+                                    newVal = '\'' + dt.ToString("yyyy-MM-dd HH:mm:ss") + '\'';
                                     break;
                                 case byte[] byteList:
-                                    row.Add("0x" + string.Concat(byteList.Select(i => i.ToString("X2"))));
+                                    newVal = "0x" + string.Concat(byteList.Select(i => i.ToString("X2")));
                                     break;
                                 default:
-                                    row.Add(val);
+                                    newVal = val;
                                     break;
                             }
-
+                            valString.Append(newVal);
+                            if (i < reader.FieldCount-1)
+                            {
+                                valString.Append(',');
+                            }
                         }
-                        valString.Append($"({string.Join(",", row)}),");
+                        valString.Append(')');
+                        //valString.Append($"({string.Join(",", row)}),");
                     }
                     if (valString.Length == 0) break;
 
@@ -229,7 +242,7 @@ namespace Chenfeng.MES.Archiver.Commands
                             //streamWriter.Flush();
                         }
                     }
-
+                    if (PageSize <= 0) break; // 不分页直接跳出
                     pageIndex++;
                 }