CREATE TABLE customers ( customer_id BIGINT AUTO_INCREMENT NOT NULL, customer_name VARCHAR(500) NOT NULL, customer_email VARCHAR(200), PRIMARY KEY(customer_id) ) ENGINE = MEMORY; Multiple Table Options You can use multiple options at once while creating a table. For example, this statement...
For example: CREATE OR REPLACE TABLE x (d DATE DEFAULT '0000-00-00'); SET SQL_MODE='NO_ZERO_DATE'; CREATE OR REPLACE TABLE y LIKE x; ERROR 1067 (42000): Invalid default value for 'd' CREATE TABLE ... SELECT You can create a table containing data from other tables using the ...
MariaDB [db]> CREATE TABLE t2 (id INT) COMMENT='sequoiadb:{ table_options: { CompressionType: "snappy" } }'; Copy 指定表自增字段起始值为 1000,并严格递增 MariaDB [db]> CREATE TABLE tb (id INT AUTO_INCREMENT PRIMARY KEY) COMMENT='Strict auto_increment field for example, sequoiadb:{...
(2)向表中添加一列: alter table 表名 add 要添加的列名 数据类型; (3)删除表中的一列: alert table 表名 drop column 被删的列名; (4)修改一个列的数据类型: alter table 表名 modify column 列名 数据类型; (5)重命名一个列: alter table 表名 change column 旧列名 新列名 数据类型; 8.向表中...
mariadb [wuhan]> create table wuhan.t2(id int not null,keyname varchar(20)); query ok, 0 rows affected (0.006 sec) 添加版本信息: mariadb [wuhan]> show create table wuhan.t2\g *** 1. row *** table: t2 create table: create table `t2` ( `id` int(11) not null...
CREATE TABLE test.xpand_dist_example ( id BIGINT PRIMARY KEY, col1 INT, col2 INT, col3 VARCHAR(64), KEY k1 (col2), KEY k2 (col3, col1) ); 假设我们的示例表包含一些数据: INSERT INTO test.xpand_dist_example (col1, col2,col3) VALUES (16, 36, "january"), (17, 35, "februar...
private final static String createTable = "CREATE TABLE `example` (id INT, data VARCHAR(100))";public Connection createConnection() throws IOException, ClassNotFoundException, SQLException { Connection connection;Properties prop = new Properties();System.out.println("test");prop.load(new...
1. 开启mariadb服务: systemctl start mariadb 1. 无密码登录mariadb: mysql 1. 查看用户表: select * from mysql.user\G 1. 添加远程访问用户: grant all on *.* to 'root'@'%' identified by '123456' 1. 设置添加用户的授权权限: update mysql.user set Grant_priv='Y' where Host='%' ...
...MEMORY存储引擎不支持事务处理;MySQL的所有版本都支持InnoDB存储引擎;注释:MEMORY存储引擎正式地被确定为HEAP引擎。...InnoDB存储引擎;它支持事务处理; BDB BDB存储引擎,别名BERKELEYDB;BDB存储引擎提供事务安全表;mysql 5.1以下版本才支持此存储引擎; EXAMPLE EXAMPLE存储引擎是一个...ARCHIVE ARCHIVE存储引擎被用来无...
# chmod 640 /etc/pki/tls/private/server.example.com.key.pem # chgrp mysql /etc/pki/tls/private/server.example.com.key.pem 如果未授权的用户可以访问私钥,因此到 MariaDB 服务器的连接不再是安全的。 恢复SELinux 上下文: # restorecon -Rv /etc/pki/tls/...