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Learn SQL Database Programming

You're reading from   Learn SQL Database Programming Query and manipulate databases from popular relational database servers using SQL

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Product type Paperback
Published in May 2020
Publisher Packt
ISBN-13 9781838984762
Length 564 pages
Edition 1st Edition
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Author (1):
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Josephine Bush Josephine Bush
Author Profile Icon Josephine Bush
Josephine Bush
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Table of Contents (24) Chapters Close

Preface 1. Section 1: Database Fundamentals
2. Introduction to Relational Database Management Systems FREE CHAPTER 3. Installing and Using MySQL Workbench 4. Understanding Data Types 5. Designing and Creating a Database 6. Importing and Exporting Data 7. Section 2: Basic SQL Querying
8. Querying a Single Table 9. Querying Multiple Tables 10. Modifying Data and Table Structures 11. Section 3: Advanced SQL Querying
12. Working with Expressions 13. Grouping and Summarizing Data 14. Advanced Querying Techniques 15. Programmable Objects 16. Section 4: Presenting Your Findings
17. Exploring and Processing Your Data 18. Telling a Story with Your Data 19. Section 5: SQL Best Practices
20. Best Practices for Designing and Querying 21. SQL Appendix 22. Assessments 23. Other Books You May Enjoy

Deleting data from tables

To remove data that you've previously inserted into your database, you need to use the DELETE statement. You can delete all the records from a table, or use a WHERE clause to delete only some of the records from a table.

Using the DELETE statement with a WHERE clause

To avoid deleting everything from your table, you can use the WHERE clause with your DELETE statement. To delete data from a table in MySQL, use the following syntax:

DELETE FROM lahmansbaseballdb.collegeplaying
WHERE <{where_expression}>;

You can get this syntax by taking the following steps:

  1. Right-click on Tables in MySQL Workbench.
  2. Select Send to SQL Editor.
  3. Then, select Delete Statement.

This places the DELETE syntax...

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