表模式
如果你在某个模式中声明一个实体，查询构建器会在查询中添加模式名称：
select * from schema.users
import { int, text, mysqlSchema } from "drizzle-orm/mysql-core";
export const mySchema = mysqlSchema("my_schema")
export const mySchemaUsers = mySchema.table("users", {
id: int("id").primaryKey().autoincrement(),
name: text("name"),
});