1 / 1

SQL COMMANDS DATA SCIENTIST MUST KNOW

Many data science professions, such as data analyst, business intelligence developer, programmer analyst, database administrator, and database developer, need SQL knowledge. To connect with the database and operate with the data, you'll require SQL. <br><br>Many technical interviews for these jobs will test SQL skills in some way because it will provide you with all of the information you need, or because it will allow you to summarise the data in a specific way and then create a nice data visualisation, or because it will allow you to use the query result as one of the inputs for the next step in s

learnbay_datascience
Télécharger la présentation

SQL COMMANDS DATA SCIENTIST MUST KNOW

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SQL COMMANDS DATA SCIENTIST MUST KNOW DATA DEFINITION DATA MANIPULATION CREATE: Used to create table/databases. INSERT: Creates a record in a table. DELETE: Delete rows or the entire table. ALTER: Used to modify values in tables. UPDATE: To modify records in a table. DROP: Deletes a table from the database. SELECT: Retrieves records from a table. TRUNCATE Deletes all rows from a table. TRANSACTION CONTROL LANGUAGE DATA CONTROL LANGUAGE COMMIT: Save changes to the database. GRANT: Used to provide privileges to database objects for a user ROLLBACK: Undo changes made to the database. REVOKE: Withdraw user privileges on database objects if any granted. SAVEPOINT: Creates a rollback point in your transaction. www.Learnbay.co

More Related