Retrieve Data from Multiple-Table SQL Queries

提供:
Rhyme
このGuided Projectでは、次のことを行います。

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ダウンロード不要
Video分割画面ビデオ
Comment Dots英語
Laptopデスクトップのみ

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.

あなたが開発するスキル

Data AnalysisSql CommandsRelational DatabaseSQLiteStudio

ステップバイステップで学習します

ワークエリアを使用した分割画面で再生するビデオでは、講師がこれらの手順を説明します。

  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

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ワークスペースは、ブラウザに完全にロードされたクラウドデスクトップですので、ダウンロードは不要です

分割画面のビデオで、講師が手順ごとにガイドします

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