Database Error

What This Error Means

This error occurs when a prepared statement is executed with a parameter index that does not exist in the SQL query. It means that the number of parameters in the SQL query does not match the number of values being passed to the prepared statement.

Why It Happens

This error typically happens when the SQL query is parameterized incorrectly, such as when a parameter is added or removed without updating the corresponding prepared statement.

How to Fix It

1. 1To fix this error, you need to ensure that the number of parameters in the SQL query matches the number of values being passed to the prepared statement. You can do this by checking the SQL query and the prepared statement for any discrepancies. Additionally, you can use a debugger or print statements to verify the number of parameters being passed.

Example Code Solution

PreparedStatement pstmt = connection.prepareStatement("SELECT * FROM users WHERE username = ? AND age = ? AND email = ?");
pstmt.setString(3, "john.doe");

PreparedStatement pstmt = connection.prepareStatement("SELECT * FROM users WHERE username = ? AND age = ? AND email = ?");
pstmt.setString(1, "john.doe");