SELECT user_id,login_code,real_name,nick_name,DATE_FORMAT(create_time,'%Y-%m-%d %H:%i:%S') as create_time,GROUP_CONCAT(power_code)as 'power_code'from(SELECT p.id as power_id,p.power_code,p.power_type,su.id as user_id,su.login_code,su.nick_name,su.real_name,DATE_FORMAT(su.c...
3 rows in set (0.00 sec) mysql> explain mysql.user; mysql> show columns from mysql.user; mysql> show fields from mysql.user; mysql> show columns from mysql.user like '%user'; 会一种常用的就行 查看创建表执行了哪些命令: mysql> show create table student \G *** 1. row *** Table: ...
UserList array 会话对应的账号列表。 userList string 数据库账号。 ['testUser'] DbStats array 按数据库统计会话。 dbStats object Key string 数据库名。 dbTest TotalCount long 该数据库会话总数。 2 ActiveCount long 该数据库活跃会话数。 说明 活跃会话判断逻辑: 命令是 Query 或者 Execute,以及未结束...
我们还可以通过Db.Get()方法获取查询的数据,将查询的数据保存到一个结构体中 代码语言:javascript 复制 //Get执行查询操作type user_info struct{Username string`db:"username"`Email string`db:"email"`}varuserInfo user_info err=Db.Get(&userInfo,"SELECT username,email FROM user_info WHERE user_id=5")...
user2@'192.168.1.%' mage@'10.0.0.0/255.255.0.0' 3、创建用户:CREATE USER 1 2 3 4 CREATEUSER'USERNAME'@'HOST'[IDENTIFIEDBY'password']; #示例: createusertest@'10.0.0.0/255.255.255.0'identifiedby'123456'; createusertest2@'10.0.0.%'identifiedby123456; ...
createConnection({ host : 'localhost', user : 'me', password : 'secret', database : 'my_db' }); connection.connect(); connection.query('SELECT 1 + 1 AS solution', function (error, results, fields) { if (error) throw error; console.log('The solution is: ', results[0].solution...
By default,getreturns only those attributes that have been set explicitly, either by the MySQL Cluster Manager itself, or by the user. In other words, it shows only attributes that are mandatory (including read-only attributes), or that have been set by the user after the cluster was create...
.ToList(); // 查询单个数据: TestEntity getResult = _testRepository.Get(entity => entity.Id == 2); // 统计数量: int countResult = _testRepository.Count(entity => entity.UserId == 10001); // 数据是否存在: bool exists = _testRepository.Exists(entity => entity.UserId == 10001); ...
在连接到MySQL数据库之后,我们可以使用SQL语句来执行批量查询操作。以下是一个批量查询user表的示例代码: importjava.sql.Connection;importjava.sql.ResultSet;importjava.sql.SQLException;importjava.sql.Statement;publicclassUserDAO{publicList<User>getAllUsers(){List<User>users=newArrayList<>();try(Connectionconn...
set_valid_sender_list_of_joiner() : Recovery_metadata_joiner_information set_validity() : keyring_common::data::Data set_value() : Diagnostics_information_item, Item_func_get_user_var, Item_param, Item_splocal, Item_trigger_field, Item_user_var_as_out_param, Item_values_column, my_meta...