TypeORM，如何使用前缀创建PrimaryGeneratedColumn

import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';

@Entity()
export class User {
  @PrimaryGeneratedColumn({ type: 'int', name: 'user_id' })
  id: number;

  @Column({ name: 'user_name' })
  name: string;
}

import { MigrationInterface, QueryRunner } from 'typeorm';

export class CreateUserTable1633029227856 implements MigrationInterface {
  name = 'CreateUserTable1633029227856'

  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`
        CREATE TABLE "user" (
            "user_id" SERIAL PRIMARY KEY,
            "user_name" character varying NOT NULL
        )
    `);
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(`DROP TABLE "user"`);
  }
}