no error code for statement runtime exception

[brettmc]

Using Zend\Db\Adapter\Driver\Oci8\Statement as an example, if a runtime error occurs during sql execution (eg duplicate value on insert), the exception's code is populated with a DMBS error code.

Is there any reason not to return a DBMS error code for other drivers (I'm looking at mysqli & pdo)? They are well-defined, and give developers a way of handling different types of runtime exceptions.

[brettmc]

I've started playing with this, and success has been dependent on how DBMS vendors represent exception codes. For example, postgres uses the sql standard SQLSTATE error codes which are non-numeric, so they don't play well with zend-db's exceptions.
I see that \PDOException implements string-based error codes (I assume for this very reason). Does it sound palatable to make exception error codes strings in zend-db ?

[chukShirley]

I've been experiencing the same thing with the IbmDb2 adapter using PHP 7.1. db2_stmt_error() returns a string, and Zend\Db\Adapter\Exception expects the second constructor parameter to be an integer. When the second parameter is a string, I get

Wrong parameters for Zend\Db\Adapter\Exception\RuntimeException([string $message [, long $code [, Throwable $previous = NULL]]])

[brettmc]

@chukShirley I could probably write a failing integration test for that to demonstrate a current bug. Can you provide a simple query which would cause a non-integer error code from DB2? (would something like "select * from non_existent_table" do it?)

[michalbundyra]

This repository has been closed and moved to laminas/laminas-db; a new issue has been opened at laminas/laminas-db#75.