How do I find MySQL query error?

Just simply add or die(mysqli_error($db)); at the end of your query, this will print the mysqli error.

How do you check SQL query is correct or not in PHP?

“how to check query working or not in php” Code Answer

// peform a query.
$query = “SELECT `*` FROM user”;
$results = mysqli_query($databaseConnection, $query);
if (mysqli_num_rows($results) == 0) {
// The query returned 0 rows!
} else {

How can I catch exception in PHP?

Because exceptions are objects, they all extend a built-in Exception class (see Throwing Exceptions in PHP), which means that catching every PHP exception thrown is as simple as type-hinting the global exception object, which is indicated by adding a backslash in front: try { // } catch ( \Exception $e ) { // }

How do I find SQL query error?

View the logs

In SQL Server Management Studio, select Object Explorer.
In Object Explorer, connect to an instance of SQL Server, and then expand that instance.
Find and expand the Management section (assuming you have permissions to see it).
Right-click SQL Server Logs, select View, and then choose SQL Server Log.

How do you check MySQL query is executed or not in PHP?

“how to check if a mysqli query was successful in php” Code Answer

// peform a query.
$query = “SELECT `*` FROM user”;
$results = mysqli_query($databaseConnection, $query);
if (mysqli_num_rows($results) == 0) {
// The query returned 0 rows!
} else {

How do I fix a SQL error?

Syntax Errors

Check keyword spelling by referring to the documentation for the type of SQL you are using.
Check table spelling by referring to the database schema.
Check column spelling by referring to the database schema or doing SELECT * FROM the table you are trying to check the column name on.

How do I debug a query in SQL Server?

Debugging options

Start Debugging. To start debugging a SQL server stored procedure in SQL Server, press ALT + F5, or go to Debug -> Start Debugging, as shown in the figure below:
Stepping Through Script.
Run To Cursor.
The Local Window.
The Watch Window.
The Call Stack.
The Immediate Window.
Breakpoints.

How do I find MySQL query error?