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The DROP TABLE command deletes a table. When would

The DROP TABLE command deletes a table. When would.

Guideline: The DROP TABLE command deletes a table. When would you want to delete a table? This chapter gave several examples of changing a table’s structure. What are some reasons for changing the structure of a table?

The DROP TABLE command deletes a table. When would you want to delete a table?

The DROP TABLE command deletes a table. When would you want to delete a table?
This chapter gave several examples of changing a table’s structure. What are some reasons for changing the
structure of a table?

More Details:

What’s the difference between truncating, deleting, and dropping a table in SQL? Find out in this article.

There are a lot of ways to delete data in SQL, including the DELETETRUNCATE TABLE and DROP TABLE commands. Which one should you use in a given situation?

In this article, you’ll learn the syntax of each command in different database engines like MySQL, PostgreSQL, SQL Server, and Oracle. And you’ll understand the DROP TABLE vs. DELETE vs. TRUNCATE TABLE debate.

Let’s get started!

Want to learn how to INSERT, UPDATE, and DELETE data in SQL? Try out our course today.

DELETE

DELETE is a DML (Data Manipulation Language) command. This command removes records from a table. It is used only for deleting data from a table, not to remove the table from the database.

You can delete all records with the syntax:

DELETE
FROM
name_table;

Or you can delete a group of records using the WHERE clause:

DELETE
FROM
name_table
WHERE
col=value;

If you’d like to remove all records from a given table, use DELETE FROM followed by the table name. Notice that there aren’t any column names in this syntax; you’re removing all records, not the data in selected columns.

If you want to remove specific records, use WHERE with filtering conditions, as in the second example.

Let’s use these commands in an example. Here’s the table product:

 

 

 

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