The main use for this array is to store information about transaction
savepoints opened to to mimic MySql's InnoDB functionality, which provides
an inherent savepoint before any query in a transaction.
Type: array
See also
::addSavepoint()
::releaseSavepoint()
::rollbackSavepoint()
File
core/modules/pgsql/src/Driver/Database/pgsql/Connection.php, line 89