[#209]

src/ShardingCore/Sharding/MergeContexts/QueryableRewriteEngine.cs

@@ -59,6 +59,15 @@ namespace ShardingCore.Sharding.MergeContexts
             var orders = orderByContext.PropertyOrders;
 
             var combineQueryable = mergeQueryCompilerContext.GetQueryCombineResult().GetCombineQueryable();
+            
+            if (skip is < 0)
+            {
+                throw new ShardingCoreException($"queryable:{mergeQueryCompilerContext.GetQueryCombineResult().GetQueryCompilerContext().GetQueryExpression().ShardingPrint()} skip should >= 0");
+            }
+            if (take is < 0)
+            {
+                throw new ShardingCoreException($"queryable:{mergeQueryCompilerContext.GetQueryCombineResult().GetQueryCompilerContext().GetQueryExpression().ShardingPrint()} take should >= 0");
+            }
             //去除分页,获取前Take+Skip数量
             var reWriteQueryable = combineQueryable;
             if (take.HasValue || skip.HasValue)

src/ShardingCore/Sharding/ParseEngines/ParseEngine.cs

@@ -1,15 +0,0 @@
-using System;
-
-/*
-* @Author: xjm
-* @Description:
-* @Date: DATE TIME
-* @Email: 326308290@qq.com
-*/
-namespace ShardingCore.Sharding.ParseEngines
-{
-    public class ParseEngine
-    {
-        
-    }
-}