Why Do I Get 'java.sql.SQLException: Parameter Index Out of Range' in My PreparedStatement?

SQLException: Parameter Index Out of Range

When executing a parameterized SQL query, you may encounter the error "java.sql.SQLException: Parameter index out of range." This issue stems from mismatching the number of parameters specified in the query and the number of actual parameters passed to the PreparedStatement.

Cause:

This error occurs when you attempt to set a parameter value using the setXxx() method on PreparedStatement, but the SQL query does not contain a corresponding placeholder (?) for that parameter.

Solution:

To resolve this issue, ensure that the SQL query contains the correct number of placeholders. The parameter index starts with 1, and each placeholder (?) denotes a specific parameter that must be set using the setXxx() method.

For example:

// Assuming "val1", "val2", and "val3" are valid values
String sql = "INSERT INTO tablename (col1, col2, col3) VALUES (?, ?, ?)";
PreparedStatement preparedStatement = connection.prepareStatement(sql);
preparedStatement.setString(1, val1);
preparedStatement.setString(2, val2);
preparedStatement.setString(3, val3);

Avoid Quoting Placeholders:

It's important to note that you should not quote the placeholders in the SQL query. Quoting them will result in the SQL parser interpreting them as actual string values, which will prevent parameter binding.

Additional Resources:

• [JDBC tutorial - prepared statements](https://docs.oracle.com/javase/tutorial/jdbc/basics/prepared.html)

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