Search results for: "SELECT *"

How does mysqli_affected_rows() work for SELECT statements in PHP?

mysqli_affected_rows() function is used to get the number of rows affected by INSERT, UPDATE, or DELETE queries in MySQL. However, for SELECT statemen...

What are the advantages of using "SELECT COUNT(*)" instead of "SELECT * FROM table_name" when counting records in a table in PHP?

When counting records in a table in PHP, using "SELECT COUNT(*)" is more efficient than "SELECT * FROM table_name" because it only retrieves the count...

What are the best practices for handling SELECT queries in PHP scripts to avoid using "SELECT *"?

Using "SELECT *" in SQL queries can lead to performance issues and potential security vulnerabilities in your PHP scripts. It is best practice to expl...

What are the advantages of explicitly naming fields in a SELECT query over using "SELECT *" in PHP?

Explicitly naming fields in a SELECT query in PHP has several advantages over using "SELECT *". It allows for better code readability and understandin...

How can PHP developers optimize their code by explicitly listing all fields in a SELECT query instead of using SELECT *?

When developers use SELECT *, the database retrieves all columns from the table, which can lead to unnecessary data being fetched and slower query exe...