mysql> create table ss(id intunsignednot nullprimary key auto_increment, user_namevarchar(15)not null); Query OK, 0 rows affected (0.00 sec) mysql>insert into ss(id,user_name) values(1, 'jojo'); Query OK, 1 row
你可以使用 SQL 语句CREATE TABLE来创建数据表。 以下为创建数据表 runoon_tbl 实例: root@host# mysql -u root -p Enter password:*** mysql>useRUNOON; Databasechanged mysql>CREATETABLErunoon_tbl( ->runoon_idINTNOTNULLAUTO_INCREMENT, ->runoon_...
MySQL creates new columns for all elements in the SELECT. For example: mysql> CREATE TABLE test (a INT NOT NULL AUTO_INCREMENT, -> PRIMARY KEY (a), KEY(b)) -> ENGINE=InnoDB SELECT b,c FROM test2; This creates an InnoDB table with three columns, a, b, and c. The ENGINE option...
MySQL CREATE TABLE is used to create a table within a database. MySQL represents each table by a .frm table format (definition) file in the database directory. The storage engine might create other files as well for the table. The storage engine creates data and index files. The table fo...
Description:When creating a new table containing an auto_increment column, the generated code includes 'default 0' in the 'create table' statement. This causes the following error message:- MySQL Error Number 1067 Invalid default value for 'idtest' Can someone please confirm this?How to repeat...
tablegroup_name指定表所属的 Table Group。 AUTO_INCREMENT指定表中自增列的初始值。 OceanBase 数据库支持使用自增列作为分区键。 comment注释。 LOCALITY描述副本在 Zone 间的分布情况,如:F@z1、F@z2、F@z3表示z1、z2、z3为全功能副本。 PCTFREE指定宏块保留空间百分比。
CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)] [table_options] [partition_options] [IGNORE | REPLACE] [AS] query_expression CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name { LIKE old_tbl_name | (LIKE old_tbl_name) } ...
The CREATE TABLE statement is used to create a table in MySQL.We will create a table named "MyGuests", with five columns: "id", "firstname", "lastname", "email" and "reg_date":CREATE TABLE MyGuests ( id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, firstname VARCHAR(30) NOT NULL,...
AUTO_INCREMENT とMySQL レプリケーションについては、セクション17.5.1.1「レプリケーションと AUTO_INCREMENT」を参照してください。 COMMENT カラムのコメントは、COMMENT オプションで 1024 文字以内で指定できます。 このコメントは、SHOW CREATE TABLE および SHOW FULL COLUMNS ステートメ...
Create primary key on an existing table: importmysql.connector mydb = mysql.connector.connect( host="localhost", user="yourusername", password="yourpassword", database="mydatabase" ) mycursor = mydb.cursor() mycursor.execute("ALTER TABLE customers ADD COLUMN id INT AUTO_INCREMENT PRIMARY KE...