mysql8基礎 insert 表中含有自動增長的欄位,插入資料時用null或default
阿新 • • 發佈:2018-12-17
資料,資料,命根就在資料 ! 操作資料庫時,一定要謹慎小心。師萬物 這裡的程式碼看看就好,要有自己的判斷。遇到抉擇,要不恥上下問。
example
stu@Ubuntu:~$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 32
Server version: 8.0.12 MySQL Community Server - GPL
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> use db_chinese_medicine;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> insert into t_fruit (id,name,count,price,is_sales,note,gmt_create,gmt_modified) values(null,'菠蘿蜜',50,8.76,1,'菠蘿蜜和菠蘿是什麼關係?',now(),now());
Query OK, 1 row affected ( 0.10 sec)
mysql> select * from t_fruit;
+----+-----------+-------+-------+----------+------------------------------------+---------------------+---------------------+
| id | name | count | price | is_sales | note | gmt_create | gmt_modified |
+----+-----------+-------+-------+----------+------------------------------------+---------------------+---------------------+
| 1 | 甜瓜 | 10 | 3.210 | 1 | 無 | 2018-10-27 19:42:56 | 2018-10-27 19:42:56 |
| 2 | 烏梅 | 20 | 5.430 | 1 | 無 | 2018-10-27 19:46:21 | 2018-10-27 19:46:21 |
| 3 | 櫻桃 | 30 | 6.540 | 1 | 無 | 2018-10-27 19:46:48 | 2018-10-27 19:46:48 |
| 4 | 甘蔗 | 50 | 7.650 | 0 | 無 | 2018-10-27 19:51:13 | 2018-10-27 19:51:13 |
| 5 | 菠蘿蜜 | 50 | 8.760 | 1 | 菠蘿蜜和菠蘿是什麼關係? | 2018-10-27 19:55:44 | 2018-10-27 19:55:44 |
+----+-----------+-------+-------+----------+------------------------------------+---------------------+---------------------+
5 rows in set (0.00 sec)
mysql> insert into t_fruit (id,name,count,price,is_sales,note,gmt_create,gmt_modified) values(default,'無花果',100,8.76,1,default,now(),now());
Query OK, 1 row affected (0.04 sec)
mysql> select * from t_fruit;
+----+-----------+-------+-------+----------+------------------------------------+---------------------+---------------------+
| id | name | count | price | is_sales | note | gmt_create | gmt_modified |
+----+-----------+-------+-------+----------+------------------------------------+---------------------+---------------------+
| 1 | 甜瓜 | 10 | 3.210 | 1 | 無 | 2018-10-27 19:42:56 | 2018-10-27 19:42:56 |
| 2 | 烏梅 | 20 | 5.430 | 1 | 無 | 2018-10-27 19:46:21 | 2018-10-27 19:46:21 |
| 3 | 櫻桃 | 30 | 6.540 | 1 | 無 | 2018-10-27 19:46:48 | 2018-10-27 19:46:48 |
| 4 | 甘蔗 | 50 | 7.650 | 0 | 無 | 2018-10-27 19:51:13 | 2018-10-27 19:51:13 |
| 5 | 菠蘿蜜 | 50 | 8.760 | 1 | 菠蘿蜜和菠蘿是什麼關係? | 2018-10-27 19:55:44 | 2018-10-27 19:55:44 |
| 6 | 無花果 | 100 | 8.760 | 1 | 無 | 2018-10-27 19:57:48 | 2018-10-27 19:57:48 |
+----+-----------+-------+-------+----------+------------------------------------+---------------------+---------------------+
6 rows in set (0.00 sec)
mysql> exit
Bye
stu@Ubuntu:~$
reference
resource
MySQL是一個關係型資料庫管理系統,目前是開源的(2018-10)。 許可權明確,恰當選擇引擎與字符集,命名簡潔明瞭與規範。 MariaDB,Redis,MongoDB,PostgreSQL,Hive,HBase等,可以簡單地瞭解。 Workbench,phpMyAdmin,Navicat等圖形化管理工具,可以試用一下。