diff --git a/12-dev-guide/12-2-3-dp-table.md b/12-dev-guide/12-2-3-dp-table.md
index f1d95919b7a9ff3c9d0517c1ab05c9de8d5e8749..a5c7de7c11e479655e2142bf4eb0689bccdbf0e5 100644
--- a/12-dev-guide/12-2-3-dp-table.md
+++ b/12-dev-guide/12-2-3-dp-table.md
@@ -8,10 +8,10 @@
 ## 表的创建
 在数据库中创建数据表基本语法如下：
 ```sql
-CREATE TABLE [IF NOT EXISTS]tablename(
-	COLUMN_NAME_1 COLUMN_TYPE_1 CONSTRAINTS
-	COLUMN_NAME_2 COLUMN_TYPE_2 CONSTRAINTS
-	字段3, 数据类型 [约束条件] [默认值],  
+CREATE TABLE [IF NOT EXISTS] tablename(
+	COLUMN_NAME_1 COLUMN_TYPE_1 [CONSTRAINTS] [DEFAULT], 
+	COLUMN_NAME_2 COLUMN_TYPE_2 [CONSTRAINTS] [DEFAULT], 
+	字段3 数据类型 [约束条件] [默认值],  
 	...
 	COLUMN_NAME_N COLUMN_TYPE_N CONSTRAINTS
 )