le_id', 'integer', [ 'autoIncrement' => true, 'default' => null, 'limit' => 11, 'null' => false, ]); $table->addColumn('tag_id', 'integer', [ 'autoIncrement' => true, 'default' => auto-increment only to integer primary keys named “id” instead of all integer primary keys. Setting ‘autoIncrement’ to false always disables on all supported drivers. Http Added support for PSR-17 [https://www le_id', 'integer', [ 'autoIncrement' => true, 'default' => null, 'limit' => 11, 'null' => false, ]); $table->addColumn('tag_id', 'integer', [ 'autoIncrement' => true, 'default' =>

$table->addColumn('article_id', 'integer', [ 'autoIncrement' => true, 'default' => null, 'limit' => 11, 'null' => false, ]); $table->addColumn('tag_id', 'integer', [ 'autoIncrement' => true, 'default' => null, 'limit' auto-increment only to integer primary keys named “id” instead of all integer primary keys. Setting ‘autoIncrement’ to false always disables on all supported drivers. 34 https://www.php.net/manual/en/functions $table->addColumn('article_id', 'integer', [ 'autoIncrement' => true, 'default' => null, 'limit' => 11, 'null' => false, ]); $table->addColumn('tag_id', 'integer', [ 'autoIncrement' => true, 'default' => null, 'limit'

t h t h e f ol l ow i n g s c h e m a: CREATE TABLE User ( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, username VARCHAR(128) NOT NULL, password VARCHAR(128) NOT NULL, email VARCHAR(128) NOT NULL ); Not e : I f y ou ar e u s i n g M y S Q L d at ab as e , y ou s h ou l d r e p l ac e AUTOINCREMENT w i t h AUTO INCREMENT i n t h e ab ov e S Q L. 10 1 . G e t t i n g S t a r t e d F or s i m d r e p l ac e AUTOINCREMENT w i t h AUTO INCREMENT i n t h e f ol l ow i n g S Q L. CREATE TABLE Post ( 4. 3 A c t i v e R e c or d 59 id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, title VARCHAR(128)

in a database table. Constructor takes name, type and other parameters such as primary_key, autoincrement and other constraints. SQLAlchemy matches Python data to the best possible generic column data

t h t h e f ol l ow i n g s c h e m a: CREATE TABLE User ( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, username VARCHAR(128) NOT NULL, password VARCHAR(128) NOT NULL, email VARCHAR(128) NOT NULL ); Not e : I f y ou ar e u s i n g M y S Q L d at ab as e , y ou s h ou l d r e p l ac e AUTOINCREMENT w i t h AUTO INCREMENT i n t h e ab ov e S Q L. F or s i m p l i c i t y , w e on l y c r e at , y ou s h ou l d r e p l ac e AUTOINCREMENT w i t h AUTO INCREMENT i n t h e f ol l ow i n g S Q L. CREATE TABLE Post ( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, title VARCHAR(128) NOT NULL, content

TABLE user ( id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE NOT NULL, password TEXT NOT NULL ); CREATE TABLE post ( id INTEGER PRIMARY KEY AUTOINCREMENT, author_id INTEGER NOT NULL, created

TABLE user ( id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE NOT NULL, password TEXT NOT NULL ); CREATE TABLE post ( id INTEGER PRIMARY KEY AUTOINCREMENT, author_id INTEGER NOT NULL, created

primary: true, //is it primary unique: true, //is it unique auto_increment: true //is it autoincrement? } } JavaScript default is only valid in adding, and readonly is only valid in updating

primary: true, //is it primary unique: true, //is it unique auto_increment: true //is it autoincrement? } } Additional properties can be added in the model, such as default value and does it read

语句是为你所用的数据库定制的，所以那些和数据库有关的字段类型，比如 auto_increment（MySQL）、serial（PostgreSQL）和 integer primary key autoincrement（SQLite），都会为你自动处理的。那些和引号相关的事情 - 例如，是使用 单引号还是双引号 - 也一样会被自动处理。 sqlmigrate 命令并没有真正在你的数据库中的执行迁移 -