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SQL QUERY

Unit 1

Introduction to SQL Queries SQL Select Query SQL Update Query SQL Delete Query SQL Join Query

Unit 2

SQL Aggregate Functions SQL String Functions SQL Date Functions

Unit 3

Introduction to SQL Indexes SQL Index Types

Unit 1 • Chapter 4

SQL Delete Query

Video Summary

The paper studies the problem of training a neural network to perform a given task. The authors propose a method that uses a reinforcement learning algorithm to train the network. The method is shown to be effective on a variety of tasks, including image classification and natural language processing.

Knowledge Check

Which of the following is not a valid SQL keyword for a DELETE query?

FROM

WHERE

AND

UPDATE

Which of the following statements is not a valid SQL DELETE query?

DELETE FROM customers WHERE last_name = 'Smith'

DELETE FROM customers WHERE last_name = 'John Smith'

DELETE FROM customers WHERE first_name = 'John'

DELETE FROM customers WHERE first_name = 'John Smith'

Which of the following is a valid SQL DELETE query?

DELETE FROM customers WHERE last_name = 'Smith'

DELETE FROM customers WHERE last_name = 'John Smith'

DELETE FROM customers WHERE first_name = 'John'

DELETE FROM customers WHERE first_name = 'John Smith'

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SQL Update Query

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SQL Join Query