Dbtype sysname missing for SQLServerPlatform (when using change data capture)

[WrdVdb]

Bug Report

We have enabled cdc (change data capture) on our SQLserver database. And now we get the error

Unknown database type sysname requested, Doctrine\DBAL\Platforms\SQLServer2012Platform may not support it.

doctrine/dbal 3.7.2

Summary

Dump of field:

array:12 [
  "table_name" => "change_tables"
  "schema_name" => "cdc"
  "name" => "capture_instance"
  "type" => "sysname"
  "length" => "256"
  "notnull" => "1"
  "default" => null
  "scale" => "0"
  "precision" => "0"
  "autoincrement" => "0"
  "collation" => "Latin1_General_CI_AS"
  "comment" => null
]

When I add "'sysname' => Types::STRING," to the file vendor/doctrine/dbal/src/Platforms/SQLServerPlatform.php the problem is fixed.

$this->doctrineTypeMapping = [
            'bigint'           => Types::BIGINT,
            'binary'           => Types::BINARY,
            'bit'              => Types::BOOLEAN,
            'blob'             => Types::BLOB,
            'char'             => Types::STRING,
            'date'             => Types::DATE_MUTABLE,
            'datetime'         => Types::DATETIME_MUTABLE,
            'datetime2'        => Types::DATETIME_MUTABLE,
            'datetimeoffset'   => Types::DATETIMETZ_MUTABLE,
            'decimal'          => Types::DECIMAL,
            'double'           => Types::FLOAT,
            'double precision' => Types::FLOAT,
            'float'            => Types::FLOAT,
            'image'            => Types::BLOB,
            'int'              => Types::INTEGER,
            'money'            => Types::INTEGER,
            'nchar'            => Types::STRING,
            'ntext'            => Types::TEXT,
            'numeric'          => Types::DECIMAL,
            'nvarchar'         => Types::STRING,
            'real'             => Types::FLOAT,
            'smalldatetime'    => Types::DATETIME_MUTABLE,
            'smallint'         => Types::SMALLINT,
            'smallmoney'       => Types::INTEGER,
            'text'             => Types::TEXT,
            'time'             => Types::TIME_MUTABLE,
            'tinyint'          => Types::SMALLINT,
            'uniqueidentifier' => Types::GUID,
            'varbinary'        => Types::BINARY,
            'varchar'          => Types::STRING,
            'sysname'          => Types::STRING,
        ];

How to reproduce

Error happens after enabling cdc in the database.

Expected behaviour

No errors when saving records.

[WrdVdb]

--- /dev/null
+++ ../src/Platforms/SQLServerPlatform.php
@@ -1548,6 +1548,7 @@
             'uniqueidentifier' => Types::GUID,
             'varbinary'        => Types::BINARY,
             'varchar'          => Types::STRING,
+            'sysname'          => Types::STRING,
         ];
     }
 

[derrabus]

Please send a PR.