Retrieve Data with Multiple-Table SQL Queries

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在此指導項目中,您將:

Explain the need for multiple-table queries in data retrieval.

Generate successful SQL multiple-table queries for data retrieval.

Recognize relationships among tables in a relational database.

Clock50 minutes
Intermediate中級
Cloud無需下載
Video分屏視頻
Comment Dots英語(English)
Laptop僅限桌面

In this course you will be introduced to two methods of writing SQL queries that retrieve data from two or more tables. Since one of the functions of a database is to store data in an organized format, many databases are made up of multiple tables. Often, the data output required from the database is made up of data from more than one table. For example, the data that populates a student transcript might come from the Student, Course, and Section tables. While the Student table may provide the student’s name, the name and number of the course might come from the Course table and the specific grade for that course may come from yet another table. While writing SQL queries in SQLiteStudio, you'll learn the SQL syntax required to join tables together as you develop an understanding of how the relationships among tables come into play. Note: This course works best for learners who are based in the North America region. We’re currently working on providing the same experience in other regions.

您要培養的技能

Data AnalysisSql CommandsRelational DatabaseSQLiteStudio

分步進行學習

在與您的工作區一起在分屏中播放的視頻中,您的授課教師將指導您完成每個步驟:

  1. Joining Two Tables with WHERE

  2. Understanding Table Relationships

  3. Joining Three or More Tables

  4. Adding Selection into the WHERE clause

  5. The INNER JOIN

  6. The LEFT JOIN

指導項目工作原理

您的工作空間就是瀏覽器中的雲桌面,無需下載

在分屏視頻中,您的授課教師會為您提供分步指導

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