From 08788e344372995eedc731560f9b57798f7af06f Mon Sep 17 00:00:00 2001
From: rainbowsysu <qiang.song@nlpr.ia.ac.cn>
Date: Thu, 24 Oct 2019 20:07:10 +0800
Subject: [PATCH] fixed the given examples of nullable in zh doc

---
 docs/zh/data_types/nullable.md | 40 ++++++++++------------------------
 1 file changed, 12 insertions(+), 28 deletions(-)

diff --git a/docs/zh/data_types/nullable.md b/docs/zh/data_types/nullable.md
index 41565f9d721..67d98fa9408 100644
--- a/docs/zh/data_types/nullable.md
+++ b/docs/zh/data_types/nullable.md
@@ -19,37 +19,21 @@
 
 ## 用法示例
 
+
+```sql
+CREATE TABLE t_null(x Int8, y Nullable(Int8)) ENGINE TinyLog
 ```
-:) CREATE TABLE t_null(x Int8, y Nullable(Int8)) ENGINE TinyLog
-
-CREATE TABLE t_null
-(
-    x Int8,
-    y Nullable(Int8)
-)
-ENGINE = TinyLog
-
-Ok.
-
-0 rows in set. Elapsed: 0.012 sec.
-
-:) INSERT INTO t_null VALUES (1, NULL)
-
-INSERT INTO t_null VALUES
-
-Ok.
-
-1 rows in set. Elapsed: 0.007 sec.
-
-:) SELECT x + y FROM t_null
-
-SELECT x + y
-FROM t_null
-
+```sql
+INSERT INTO t_null VALUES (1, NULL), (2, 3)
+```
+```sql
+SELECT x + y FROM t_null
+```
+```text
 ┌─plus(x, y)─┐
 │       ᴺᵁᴸᴸ │
 │          5 │
 └────────────┘
-
-2 rows in set. Elapsed: 0.144 sec.
 ```
+
+[来源文章](https://clickhouse.yandex/docs/en/data_types/nullable/) <!--hide-->
\ No newline at end of file