连接数据库sql 的相关内容

阿里云文档 2025-06-23

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本文介绍如何通过DTS控制台将自建SQL Server数据库迁移至阿里云RDS SQL Server。支持灵活配置库表结构迁移、全量数据迁移和增量数据迁移，同时配置这三种迁移类型可在应用不停服的情况下，平滑完成数据库迁移。

阿里云文档 2025-06-23

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本文介绍Lindorm计算引擎支持的数据类型，常用算子和函数。

阿里云文档 2025-06-11

RDS SQL Server异地容灾最佳实践

本视频演示如何为RDS SQL Server主实例创建异地灾备实例，帮助您快速部署异地容灾架构。通过异地灾备实例，您可以在主实例发生故障或所在区域不可用时，快速提升灾备实例为主实例，从而保障业务连续性、实现数据库的高可用性和灾难恢复能力。此外，异地灾备实例支持只读访问，能够分担主实例的查询压力，满足多地域部署和业务应用就近访问的需求。

文章 2024-10-16 来自：开发者社区

如何使用`DriverManager.getConnection()`连接数据库，并利用`PreparedStatement`执行参数化查询，有效防止SQL注入。

在一个充满代码和逻辑的世界里，我踏上了学习JDBC的旅程，从一名对数据库连接操作一无所知的新手，逐渐成长为能够熟练驾驭JDBC的开发者。这段旅程充满了挑战与惊喜，每一次的探索都让我对JDBC有了更深的理解和感悟。最初接触JDBC时，我满脑子都是疑问：如何建立数据库连接？如何执行SQL语句ÿ...

文章 2024-07-10 来自：开发者社区

Java面试题：描述JDBC的工作原理，包括连接数据库、执行SQL语句等步骤。

JDBC（Java Database Connectivity，Java数据库连接）是一个面向对象的应用程序接口（API），用于连接数据库和执行SQL语句。以下是JDBC的基本工作原理及连接数据库和执行SQL语句的主要步骤：加载和注册JDBC驱动首先，JDBC需要加载数据库的驱动程序。这个驱动是一个实现了JDBC接口的类库，它负责和特定的数据库进行通信。加载驱动通常...

问答 2023-08-16 来自：开发者社区

Flink CDC中cdc连接vitess数据库，执行sql 报这个错误，是啥原因呀？

Flink CDC中cdc连接vitess数据库，执行sql 报这个错误，是啥原因呀？org.apache.flink.util.SerializedThrowable: io.netty.handler.codec.http2.Http2Exception: First received frame was not SETTINGS

文章 2022-01-26 来自：开发者社区

JAVA中jdbc连接数据库 sql注入与PrepareStatement预处理

连接数据的步骤如下：1.注册驱动2.获取连接3.创建执行sql语句的对象4.书写一个SQL语句5.执行SQL语句6.对结果集进行处理一下的这种情况，可能存在SQL注入的情况public void login(String username, String password) throws ClassNotFoundException, SQLException { // 1.注册驱动 ...

文章 2021-12-15 来自：开发者社区

Java 技术篇 - java同时连接多种数据库执行sql语句的兼容性验证，数据库类型包括：oracle、sqlserver、DB2、人大金仓、达梦、PG、瀚高、polardb

Java 操作多类型数据库下的兼容性验证第一章：数据库测试①【 oracle 数据库不支持分号】ORA-00933: SQL 命令未正确结束② 【sqlserver 数据库不支持 commit】COMMIT TRANSACTION 请求没有对应的 BEGIN TRANSACTION③ 【DB2 数据库不支持分号】SQLSTATE=42601, SQLERRMC=;;de....

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