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:
Save your time - order a paper!
Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines
Order Paper NowWhat’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 DELETE
, TRUNCATE 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!
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
:
Attachments
Click Here To Download
The post The DROP TABLE command deletes a table. When would appeared first on AssignmentHub.