WebApr 30, 2024 · 1.创建数据库的 create database 数据库名 eg: 查看已创建的数据： 结果： 2.数据库名所对应的数据库不存在的情况下创建.如果已经存在则不创建. create database i WebCREATE {DATABASE SCHEMA} [IF NOT EXISTS] db_name [create_option] ...create_option: [DEFAULT] { CHARACTER SET [=] charset_name COLLATE [=] collation_name}. CREATE DATABASE creates a database with the given name. To use this statement, you need the CREATE privilege for the database. CREATE SCHEMA is …
SQL-MYSQL Can
http://c.biancheng.net/view/2413.html WebCREATE 语句 # CREATE 语句用于向当前或指定的 Catalog 中注册表、视图或函数。注册后的表、视图和函数可以在 SQL 查询中使用。 目前 Flink SQL 支持下列 CREATE 语句： CREATE TABLE CREATE DATABASE CREATE VIEW CREATE FUNCTION 执行 CREATE 语句 # Java 可以使用 TableEnvironment 中的 executeSql() 方法执行 CREATE … first walltech
CREATE DATABASE - MariaDB Knowledge Base
WebTo create a new database in MySQL, you use the CREATE DATABASE statement with the following syntax: CREATE DATABASE [ IF NOT EXISTS] database_name [ CHARACTER SET charset_name] [ COLLATE collation_name] Code language: SQL (Structured Query Language) (sql) In this syntax: First, specify name of the database after the the … WebAug 2, 2024 · 1.MySQL对CREATE TABLE IF NOT EXISTS SELECT的处理. MySQL 支持创建持数据表时判断是否存在，存在则不创建，不存在则创建，相应语句如下：. --格式 CREATE TABLE IF NOT EXISTS [Table Definition]; --示例 CREATE TABLE IF NOT EXISTS student(id int unsigned not null primary key,name varchar(32) not null); MySQL ... WebCREATE EVENT IF NOT EXISTS is always replicated, whether or not the event named in the statement already exists on the source. CREATE USER is written to the binary log only if successful. If the statement includes IF NOT EXISTS, it is considered successful, and is logged as long as at least one user named in the statement is created; in such ... camping at wallowa lake oregon