Search results for: "duplicate rows"

What are some best practices for handling duplicate entries in a database when fetching rows in PHP?

When fetching rows from a database in PHP, one common issue is dealing with duplicate entries. One way to handle this is to use the DISTINCT keyword i...

What best practices can be followed to avoid duplicate rows in PHP-generated tables?

To avoid duplicate rows in PHP-generated tables, one best practice is to use an array to store unique values and check against this array before addin...

How can PHP developers ensure that duplicate entries are not created in a MySQL table when inserting data, and instead update existing rows?

To ensure that duplicate entries are not created in a MySQL table when inserting data, PHP developers can use the "INSERT ... ON DUPLICATE KEY UPDATE"...

How can PHP be used to check if 2 or more rows in a MySQL table have identical values in a specific column?

To check if 2 or more rows in a MySQL table have identical values in a specific column, you can use a SQL query to select rows with duplicate values i...

How can SQL JOIN be utilized to prevent duplicate entries when querying data from multiple tables in PHP?

When querying data from multiple tables in PHP using SQL JOIN, duplicate entries may occur if there are multiple matching rows in the joined tables. T...