How can one troubleshoot and debug issues with subqueries in PHP SQL statements?

When troubleshooting and debugging issues with subqueries in PHP SQL statements, it is important to carefully examine the syntax of the subquery to ensure it is written correctly and returns the expected results. Additionally, check for any errors or warnings generated by the database when executing the query. Using functions like mysqli_error() can help identify any issues with the subquery. 

// Example code snippet for troubleshooting subqueries in PHP SQL statements

$query = "SELECT * FROM table WHERE column = (SELECT MAX(column) FROM another_table)";

$result = mysqli_query($connection, $query);

if(!$result) {
    echo "Error: " . mysqli_error($connection);
} else {
    // Process the results
}

Keywords

subqueries debugging troubleshooting SQL statements PHP

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