Why Am I Getting the 'SQLSTATE[HY093]: Invalid parameter number' Error in Yii?-PHP Tutorial-php.cn

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Why Am I Getting the 'SQLSTATE[HY093]: Invalid parameter number' Error in Yii?

Linda Hamilton

Dec 16, 2024 pm 09:17 PM

Why Am I Getting the

Troubleshooting "SQLSTATE[HY093]: Invalid parameter number" Error

In Yii, when encountering the cryptic "SQLSTATE[HY093]: Invalid parameter number" error, it typically indicates an issue with parameter binding in SQL statements.

Possible Causes

Mismatched Parameter Names: Ensure that the parameter names specified in the SQL statement (:parameter) match the bindValue() parameters (:username). Here, the issue was that :alias was used in the SQL statement while binding to :username.
Omitted bindValue() Calls: Confirm that all parameters used in the SQL statement have a corresponding bindValue() call.
Invalid Placeholder Characters: Check for unusual characters within parameter placeholders, as certain characters may not be valid.
Pagination or Sorting Conflicts: Complex queries involving joins and CDataProvider's pagination/sorting features can occasionally result in parameter omissions.

Troubleshooting Tips

Enable parameter logging in the config file by adding 'enableParamLogging'=>true, to trace the executed query and associated parameters. Additionally, consider the following debugging techniques:

Inspect the error message to identify the specific parameter name(s) causing the issue.
Review the code and ensure there are no typos or inconsistencies in parameter usage.
Check the query generated by the command->createCommand($sql); to confirm if it matches the intended statement.
Try binding parameters using positional values (e.g., ?, ?), which may be more robust in certain cases.

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