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所在平台: Udemy |
课程主页: https://www.udemy.com/course/oracle-sql-hands-on-experience-for-beginners/
课程评论：没有评论
课程总结：Oracle SQL 初学者实践体验 本课程“Oracle SQL Hands-On Experience for Beginners”旨在向初学者教授结构化查询语言（SQL）的基本使用方法。SQL 是一套访问 Oracle 数据库中数据的语句，虽然应用程序和工具通常提供无需直接使用 SQL 的访问方式，但这些应用本质上仍依赖 SQL 来执行用户请求。无论是应用程序开发人员、数据库管理员、管理人员还是最终用户，掌握 SQL 将大大提升其工作能力。 本课程强调 SQL 在关系数据库操作中的核心地位，旨在帮助学生充分利用 SQL 的强大功能，从简单到复杂的查询得心应手。学生将学习如何撰写精准的 SQL 查询，选择最佳查询方法，确保准确性并避免常见错误。课程内容包括： - 使用 SQL SELECT 检索数据 - 运用别名 - 使用 SQL DISTINCT 删除重复数据 - 编写包含 WHERE 子句的 SQL 查询 - 创建视图 - 使用 SQL 更新数据 - 使用 SQL INSERT 添加新数据 - 应用 ORDER BY 子句进行数据排序 - 使用 SQL IN 操作符和 SQL NULL - 使用 LIKE 操作符 - 编写符合 ISNULL 的 SQL 查询 - 通过表连接提取多个表的数据 这个实用的在线视频课程为初学者量身定制，旨在增强学员的 SQL 技能，提高就业前景，无论是作为承包商还是全职员工，掌握 SQL 永远是一个受欢迎的技能。
Structured Query Language (SQL) is the set of statements with which all programs and users access data in an Oracle database. Application programs and Oracle tools often allow users access to the database without using SQL directly, but these applications in turn must use SQL when executing the user's request.The strengths of SQL provide benefits for all types of users, including application programmers, database administrators, managers, and end users. Technically speaking, SQL is a data sub language. The purpose of SQL is to provide an interface to a relational database such as Oracle Database, and all SQL statements are instructions to the database.SQL forms the cornerstone of all relational database operations. Taking full advantage of its power requires an in-depth understanding of the language. In this course, you learn to use the full potential of SQL to write simple to complex queries for Oracle databases. You will gain the practical skills to choose the best query method to ensure accuracy and avoid common errors or pitfalls.SQL Skills will greatly improve your job prospects either as a contractor or full time employment. It is a useful skill that is always in demand.This is a practical hands on video based course designed for beginners. You will Learn how to:Retrieve Data with SQL SELECT Use Aliases Remove Duplicates with SQL DISTINCT Write SQL Queries with WHERE Clause Create Views Update data with SQL Add new data with SQL INSERT Use ORDER BY clause Use SQL to Sort data Use SQL IN operator Use SQL NULL Use LIKE OperatorWrite SQL Queries with ISNULL Extract data from multiple tables with table joins
