This return type is conditional to $params['wrapperClass']. Luckily,
recent versions of Psalm allow documenting it properly.
See https://github.com/vimeo/psalm/issues/3277

Note that phpstan is not able to understand this yet, but still attempts
to, hence the extra ignore rules.

This hack is temporary and should be removed on 3.0.x

See https://github.com/vimeo/psalm/issues/3224

This is precisely what we are testing here.

This is what is expected with FETCH_COLUMN

That alone fixes 6 issues found by Psalm

Not all RDBMS have a concept of database, apparently (see SQLAnywhere).
Those who do not should pass in a string to stay compatible with the
signature.

The method signature does not allow null.

We are testing what happens when providing the wrong type.

It is more simple and more accurate

The latest version is easier to understand for static analyzers.

Ignore all violations of the LowercasePHPFunctions sniff in SQLSrvStatement

Fix character for mysql driver example

Coveralls integration

Remove useless rules

For UTF-8: SQLSTATE[HY000] [2019] Unknown character set

Extend RetryableException from Throwable interface

Let RetryableException extend from the Throwable interface to prevent errors in Psalm if catching it

We are calling them in uppercase since 64939c35

This exclude rule is here because of a false positive that has been
fixed since slevomat/coding-standard 6.1.2