From 1db4753069ac7cb43f2c86fde78b80de98b0ea88 Mon Sep 17 00:00:00 2001
From: randomJoe211 <69501902+randomJoe211@users.noreply.github.com>
Date: Tue, 28 Sep 2021 11:09:23 +0800
Subject: [PATCH] Update 4.schema.md (#1019)

---
 docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md b/docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md
index 1630d5477a1..497fbfe86a2 100644
--- a/docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md
+++ b/docs-2.0/3.ngql-guide/6.functions-and-expressions/4.schema.md
@@ -9,8 +9,8 @@ Nebula Graph支持以下Schema函数。
 |函数| 说明 |
 |:----  |  :----|
 | id(vertex) | 返回点ID。数据类型和点ID的类型保持一致。|
-|list tags(vertex) | 返回点的Tag。|
-|list labels(vertex) | 返回点的Tag。|
+|list tags(vertex) | 返回点的Tag，与labels()作用相同。|
+|list labels(vertex) | 返回点的Tag，与tags()作用相同，用于兼容openCypher语法。|
 |map properties(vertex_or_edge) | 接收点或边并返回其属性。|
 |string type(edge) | 返回边的Edge type。|
 |vertex startNode(path) | 获取一条边或一条路径并返回它的起始点ID。|