where("post.userId = user.id"); return "user.id IN (" + subquery.getQuery() + ")"; } }); return users; } 注意:上述代码是一个示例,并不完整,因为它直接拼接了子查询的字符串,这在实际应用中可能会导致SQL注入等安全问题。更好的做法是使用TypeORM提供的API来构建安全的子查询。 更安全的...
asyncbuilder(){constresult1=awaitthis.usersRepository.createQueryBuilder().select('User.firstName').where('User.isActive = true').getMany();constresult2=awaitthis.usersRepository.createQueryBuilder('u').select('u.firstName').where('u.isActive = true').getMany();console.log(result1,result2...
我们可以写:where("user.name ='"+ name +"'),但是这不安全,因为有可能被 SQL 注入。安全的方法是使用这种特殊的语法:where("user.name =name",{name:"Timber"}),其中name是参数名,值在对象中指定: {name:"Timber"}。 .where("user.name = :name", { name: "Timber" })是下面的简写:...
.setParameters(userQb.getParameters()) .where(`"tempTb".otype = 'user' AND u.status = :status`, { status: AccountStatus.Active }) .getQuery(); // tslint:disable-next-line:prefer-template return 'post.user_id IN ' + subQuery; }) .getMany(); return posts; } 1. 2. 3. 4. 5...
('post') .leftJoinAndSelect('post.author', 'author') .addSelect(subQuery => { return subQuery .select('COUNT(*)', 'commentCount') .from('comments', 'comment') .where('comment.postId = post.id'); }, 'commentCount') .orderBy('commentCount', 'DESC') .limit(10) .getMany(); ...
问使用typeorm中的选择插入ENTypeORM 是一个ORM (opens new window)框架，它可以运行在 NodeJS、Browser...
It is called query within another query or nested query. We use subqueries in FROM, WHERE and JOIN expressions.Simple example is shown below −const projects = await connection .createQueryBuilder() .select("project.id", "id") .addSelect(subQuery => { return subQuery .select("student....
在上一篇文章中,我们介绍了 NestJS 的基础概念和核心功能。本文将深入探讨如何在 NestJS 中集成 TypeORM,实现数据库操作的最佳实践。 TypeORM 集成配置 1. 安装依赖 首先安装必要的依赖包: npminstall@nestjs/typeorm typeorm pg# 如果使用 MySQL# npm install @nestjs/typeorm typeorm mysql2 ...
TypeORM, need to add "WHERE IN (...)" in query condition & only when there is a value for it, TypeORM, add condition in `where` if value is presented and not empty string, TypeORM Postgres WHERE ANY or IN With QueryBuilder Or Find?, How to apply wher
I am doing aleftJoinwith sub query and in that sub query I have.select("table.*")statement, it allows me to just select all the columns from one table. Then on theONpart of this join I am referencing one of the selected columns to match. And specifically in this part where the cus...