SQL For Beginners 2025: Learn SQL Using MySQL Database

所在平台: Udemy

课程主页: https://www.udemy.com/course/sqlcourse/

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**Coursera 课程《SQL for Beginners 2025: Learn SQL Using MySQL Database》课程总结** 本课程旨在帮助零基础学员掌握SQL(结构化查询语言),并以MySQL数据库为实践平台。课程内容全面且结构清晰,共分为23个主要部分,提供超过15小时的高清视频讲解,并附带逐行代码解释和练习示例。 **主要学习内容包括:** * **SQL与数据库基础:** 了解数据库的概念、SQL的作用及数据库创建。 * **工具安装与配置:** 学习安装MySQL及MySQL Workbench,以便进行SQL查询。 * **数据库和表操作:** 掌握SQL基础语法,创建数据库、表,理解数据类型,并学习SELECT语句进行数据查询。 * **约束与数据校验:** 学习MySQL中的各种约束(如主键、外键、唯一约束、非空约束、检查约束等),以保证数据完整性。 * **条件与逻辑运算:** 掌握比较运算符(=, <>, <, >, BETWEEN, LIKE, IS NULL等)和逻辑运算符(AND, OR, NOT),用于数据筛选和组合查询。 * **字符串与算术函数:** 学习MySQL提供的字符串处理函数(CONCAT, LENGTH, SUBSTRING, TRIM等)和算术运算。 * **数据库表修改:** 学习如何添加、删除、修改列,重命名表和列,以及修改和删除约束。 * **CRUD操作:** 全面掌握数据的创建(CREATE)、读取(READ)、更新(UPDATE)和删除(DELETE)操作。 * **聚合函数与日期时间:** 学习聚合函数(COUNT, SUM, AVG, MAX, MIN等)对数据进行汇总分析,并掌握日期时间数据的处理。 * **关系与连接:** 理解外键的作用,学习数据库表之间的各种关系(一对一、一对多、多对多),并掌握JOIN操作(INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN)连接多表查询。 * **视图(Views):** 学习创建和使用视图,简化复杂查询。 * **数据库理论与面试准备:** 了解数据定义语言(DDL)、数据操纵语言(DML),以及关系型与非关系型数据库的区别。 * **高级SQL特性:** 学习MySQL 8引入的窗口函数(Window Functions)和公共表表达式(CTEs),以及CASE语句实现条件逻辑。 * **存储过程与触发器:** 学习创建和使用存储例程(Stored Routines,包括函数和存储过程)以及触发器(Triggers)来自动化数据库操作。 课程提供24/7的学员支持,并承诺即时解答疑问,帮助学员成为SQL专家。本课程特别适合希望成为专业SQL开发者的初学者。

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SQL Course For Beginners: Learn SQL Using MySQL DatabaseThe course was completely updated on 9th December 2024Here Is What You Get By Enrolling In This Course:Word-By-Word Explanation: In the entire course, I explain each line of code, without skipping a single line of code.Practice Examples: Special set of practice examples included at the end of each section. Awesome Quality Content: Over 15+ hours of HD(1080p) Videos.Well Structured & Easy To Learn: Course has been specially designed to make it easy for the students to learn SQL.24 X 7 Support: I will always be there to guide you in your journey to become SQL expert.Note: Student queries and problems will be answered immediately. Here Is Everything You Will Learn In This Complete Course: The entire course is divided into 23 major sections.Here is what is covered in each section:Section 1: Introduction to the courseIn this section we will learn what the course covers and have a brief overview of the topics to be coveredSection 2: Introduction to SQL and DatabasesIn this section We will learn what are databases, what is SQL and what role does SQL play in databases. By the end of this section you will have a brief idea about what databases are and how they are created.Section 3: Installing required toolsWe then install a couple of tools required for learning SQL, we install MySQL and A tool called MySQL workbench will allows us to write SQL queries.Section 4: SQL basics, creating databases, tables & data typesOnce we have MySQL installed we will straightaway start creating and learn how to create our very own databases and database tables. We learn how a database table is created and how data is stored in database tables. We will learn how to create any table in a database by writing SQL syntax. We will also learn about data types and the select clause which allows us to select or query data from our database tables.Section 5: Constraints in MySQLWe then learn about constraints. After creating database tables, we need to enforce certain rules on each table. Constraints allow you to do exactly that, constraint allows us to impose rules on database tables. In this section we learn the different types of constraints and their uses.Section 6: Comparison operators in MySQLTo filter data from our SQL queries, MySQL provides us multiple comparison operators. In this section we will learn about t he different comparison operators like equal, not equal, less than, greater than, between, like, is null and is not null operators. All of these operators allow us to filter data from our query results.Section 7: Logical operators in MySQLMySQL provides logical operators like AND, OR & NOT, we can use these logical operators to combine multiple SQL queries together.Section 8: String functions in MySQLWe then learn about string functions. Most of the data stored in the database is stored in form of strings. MySQL provides built in string functions which can be used to perform string manipulations. Some of the string functions we will be learning are the Concat function, length function, Substring function, Trim function, replace function, Locate function and a lot more.Section 9: Arithmetic operationsMySQL database contains numeric data as well. Hence mysql also provides the ability to perform arithmetic operations on numerical data present in our database. In this section we will learn how arithmetic can be performed on numerical data in our database tables.Section 10: Modifying database tablesWe have already created database tables, but we also need to learn how to modify them and that is exactly what we will learn in this section. We will learn how to add new columns, delete existing columns, change data types of columns, rename columns, rename tables, modify constraints and drop constraints. This will give us superpowers to modify any database table in any way we desire.Section 11: CRUD operationsCRUD stands for CREATE, READ, UPDATE & DELETE In this section we will learn how to perform all the above operations with respect to database tables.Section 12: Aggregate functionsSometimes we have to apply functions on the entire data and aggregate functions allow you to do that. Aggregate functions have the ability to collectively operate on all rows in our table. In this section we will learn about the different aggregate functions provided by MySQL.Section 13: Date & time data types in MySQLDatabase table can also have data and time data in it and we need to learn how to effectively work with that data. In this lecture we will learn exactly that, i.e how to work with data related to date and timeSection 14: Foreign key constraintWe learn what a foreign key is and how it is used to establish a connection between two tables.Section 15: Relationships in MySQLIn a large database, database tables are connected with each other. These database table connections are called as relationships. In this section we will learn the different relationships that can exists between database tables.Section 16: Joins in MySQLIn this section we learn how we could join two tables on the basis of a common column. We learn the different types of joins that can be implemented between two database tables.Section 17: Views in MySQLWe then learn about views, what they are and how to create views in MySQL. Views allow us to write complex queries in MySQL and we learn how to write a complex query using a view.Section 18: Database theory for interviewsThis section is completely theoretical and is added in this course keeping in mind that you might be appearing for interviews. In this section we learn what is a data definition language, data manipulation language. We will also learn what are relational databases, non relational databases and the differences between the two.Section 19: Window functions in MySQLWindow functions are a new concept introduced in MySQL 8. They allow us to apply a function over a specified window.We learn the different types of window functions that exists.Section 20: CTEs in MySQLCTEs also called as common table expression are newly introduced in MySQL, in this section we will learn what CTEs are and how they are created and what purpose they serve in MySQL.Section 21: CASE statement in MySQLIn this section we learn how to create conditional flow in MySQL statements, we learn how the case statement works and how it can be used to write conditional queries.Section 22: Stored Routines in MySQLMySQL allows you to create your own functions and procedures and save them so that you can use them as and when required. In this section we will learn how to implement stored functions and stored procedures.Section 23: Triggers in MySQLIn the last section we will learn about triggers, how triggers are created in MySQL and the different types of triggers that can be created. We learn about the before insert trigger, before update trigger, after update trigger, before update trigger, after delete trigger.So let's begin the journey of becoming an expert in SQL.In addition to the Udemy 30-day money back guarantee, you have my personal guarantee that you will love what you learn in this course. If you ever have any questions please feel free to message me directly and I will do my best to get back to you as soon as possible!Make sure to enrol in the course before the price changes.Take yourself one step closer towards becoming a professional SQL developer by clicking the "take this course button" now!Join the journey.Sincerely, Ashutosh Pawar

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