1. <username>: 要创建的用户的用户名。 <password>: 要为用户设置的密码。 在上面的SQL语句中,CREATE USER是创建用户的关键字,IF NOT EXISTS是一个可选的子句,用于在用户不存在时创建用户。 示例:创建用户 下面是一个示例,演示如何在Hive中创建一个名为testuser的用户,密码为testpassword: CREATEUSERIFNOTEXI...
CREATE USER IF NOT EXISTS 'account3' ON CLUSTER default NOT IDENTIFIED; 使用IDENTIFIED WITH no_password参数进行创建。 CREATE USER IF NOT EXISTS 'account3' ON CLUSTER default IDENTIFIED WITH no_password; 同时创建两个账号account4和account5,设置密码为Account。账号密码采用SHA256加密的方式进行存储。 CR...
以下是创建表的代码: ifnottable_exists:# 创建表的SQL语句create_table_sql=""" CREATE TABLE your_table_name ( id INT AUTO_INCREMENT PRIMARY KEY, column1 VARCHAR(255), column2 INT, ... ) """# 执行创建表的操作cursor.execute(create_table_sql)db.commit() 1. 2. 3. 4. 5. 6. 7. 8...
ClassMethod CreateUser() { d $SYSTEM.Security.Login("_SYSTEM","SYS") s x = $SYSTEM.SQL.UserExists("BillTest") if x = 0 { &sql( CREATE USER BillTest IDENTIFY BY Carl4SHK ) if SQLCODE '= 0 { w "创建用户错误: ",SQLCODE,! q } } w "用户BillTest存在",! s toggle = $RANDOM...
CREATE INDEX NonClusteredIndex_Employee_Name ON Employee(Name) END GO --添加列 IF NOT EXISTS(SELECT * FROM SYSCOLUMNS WHERE id=OBJECT_ID('Employee') and name='Name') BEGIN ALTER TABLE Employee ADD Name VARCHAR(20) END GO --创建触发器,当语文分数变化时,修改学生的总分数,其中inserted表示语文...
CREATE DATABASE [IF NOT EXISTS] db_name; 举例: 新建数据库 db_test CREATE DATABASE db_test; Create Table 该语句用于创建表(table) 语法: CREATE [EXTERNAL] TABLE [IF NOT EXISTS] [database.]table_name (column_definition[, column_definition, ...]) [ENGINE = [olap|mysql|broker]] [key_de...
declare num number;beginselect count(1) into num from user_tables where table_name='ACCOUNT';ifnum >0thendbms_output.put_line('存在!'); execute immediate'drop table ACCOUNT ';endif; execute immediate'create table Account ( AccountID nvarchar2(50) primary key, ...
在【PHOENIX_HOME】目录下创建user.sql,内容如下: -- create table user create table if not exists user (id varchar primary key,account varchar ,passwd varchar); -- insert data upsert into user(id, account, passwd) values('001', 'admin', 'admin'); ...
user='db_user', password='Welkom01') if connection.is_connected(): cursor = connection.cursor() sql = "CREATE TABLE IF NOT EXISTS "+ machine("virtual_mem varchar(255), disk_usage varchar(255),cpu_usage varchar (255);") cursor.execute(sql) connection.commit() finally: if (connection....
set_model("ecommerce-test") # Get the ddl for training the model # Train the model with the ddl ddl = """ CREATE TABLE if not exists stage.customers( customer_id INT NOT NULL PRIMARY KEY, email_address VARCHAR(50) NOT NULL, name VARCHAR(50) NOT NULL, business_type_id INT NOT ...