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所在平台: Udemy |
课程主页: https://www.udemy.com/course/the-complete-postgresql-practice-course-mcqs-hands-on/
课程评论：没有评论
## PostgreSQL 实战课程：300 道选择题（掌握版） 本课程专为 PostgreSQL 学习者设计，涵盖从基础到高级的全面知识，并通过 300 道精心设计的选择题帮助您巩固和提升技能。 **课程亮点：** * **内容全面：** * **数据库与表管理：** 从数据库创建、表设计，到修改、删除以及约束（主键、外键、自增）的运用。 * **数据操作：** 掌握 INSERT、SELECT-INSERT 等数据插入和高效管理。 * **基础与高级查询：** 涵盖 WHERE 子句、逻辑运算符、ORDER BY、LIMIT、OFFSET、DISTINCT、聚合函数（MIN, MAX, COUNT, AVG, SUM）、LIKE/ILIKE、BETWEEN、IN 等。 * **多表连接（JOIN）：** 深入理解 INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN, CROSS JOIN, Self JOIN，以及结合聚合函数和多表连接进行复杂查询。 * **分组与过滤：** 熟练运用 GROUP BY 和 HAVING 子句进行数据汇总和筛选。 * **集合操作与子查询：** 掌握 UNION, EXISTS, CASE 语句实现条件逻辑。 * **NULL 值处理与数据函数：** COALESCE、数据类型转换（CAST）。 * **字符串与数值函数：** LENGTH, CONCAT, SUBSTRING, UPPER, LOWER, ABS, ROUND, MOD, RANDOM 等。 * **日期与时间函数：** CURRENT_DATE, AGE, DATE_ADD (INTERVAL), TO_CHAR 等。 * **索引与性能优化：** 学习创建索引以提升查询速度。 * **视图（Views）：** 创建和管理视图简化数据访问。 * **高级数据库对象：** 掌握存储过程、触发器和事务，确保数据完整性和自动化。 * **电商数据库场景：** 通过实际案例学习。 * **事务管理与 ACID 属性：** 理解并实现事务，保证数据一致性。 * **实操性强：** 课程包含六个练习测试，覆盖初级、中级和高级三个难度级别，通过模拟真实场景，强化动手能力。 * **学习目标明确：** * 提升编写高效 SQL 查询的能力。 * 掌握稳健的数据库设计。 * 能够解决复杂的数据库场景。 * 优化 PostgreSQL 性能。 * 为数据库管理、开发及面试做好准备。 **适合人群：** * PostgreSQL 初学者。 * 希望提升 PostgreSQL 技能的开发者、数据库管理员。 **课程收获：** 完成本课程后，您将能够自信地管理 PostgreSQL 数据库，解决实际工作中的挑战，并在数据库领域取得职业发展。
This comprehensive PostgreSQL course is designed to guide learners through every stage of mastering PostgreSQL, from foundational concepts to advanced real-world applications. Featuring a total of 300 carefully crafted multiple-choice questions (MCQs), the course is structured across six practice tests, each targeting different skill levels-beginner, intermediate, and advanced.Through a hands-on approach, learners will develop a deep understanding of PostgreSQL's core functionalities, including database creation, table design, data manipulation, querying, and complex join operations. The course extensively covers essential SQL commands, aggregate functions, conditional logic, and advanced topics such as stored procedures, triggers, transactions, and performance optimization.Key topics covered in this course include:Database and Table Management: Create a database, create tables with relevant columns, alter tables, drop tables, and use constraints such as primary key, foreign key, and auto increment.Data Manipulation: Insert data, including insert-select statements, and manage data efficiently.Basic and Advanced Querying:Select queries with WHERE clause, including logical operators AND, OR, NOTSorting results using ORDER BY, limiting output with LIMIT and OFFSETFiltering unique values with DISTINCTUsing aggregate functions such as MIN, MAX, COUNT, AVG, SUMPattern matching with LIKE and ILIKERange filtering using BETWEEN and membership testing using INJoin Operations:INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN, CROSS JOIN, and Self JOINJoins combined with aggregates and joining multiple tables for complex queriesGrouping and Filtering Groups: GROUP BY and HAVING clause for summarizing dataSet Operations and Subqueries: UNION, EXISTS, and advanced CASE statements for conditional logicHandling NULLs and Data Functions: Techniques for managing NULL values, using COALESCE, and casting data typesString and Numeric Functions: LENGTH, CONCAT, SUBSTRING, UPPER, LOWER, ABS, ROUND, MOD, RANDOMDate and Time Functions: CURRENT_DATE, AGE, DATE_ADD using INTERVAL, TO_CHAR for formattingIndexes and Performance: Creating indexes to improve query performanceViews: Creating and managing views for simplified data accessAdvanced Database Objects and Features: Stored procedures, triggers, and transactions ensuring data integrity and automationE-Commerce Database Scenarios: Real-world examples and challenges related to e-commerce domainTransaction Management and ACID Properties: Understanding and implementing transactions for data consistency and reliabilityEach practice test is designed to not only assess knowledge but also reinforce learning by providing real-life scenarios and detailed explanations, ensuring practical readiness for database management, development, and interview preparation. Whether you are new to PostgreSQL or looking to enhance your expertise for professional growth, this course offers a structured pathway to build confidence and proficiency in managing PostgreSQL databases effectively.By the end of this course, learners will be equipped to write efficient SQL queries, implement robust database designs, troubleshoot complex scenarios, and optimize PostgreSQL performance, making them ready to tackle real-world challenges in various domains.
