Execute executes query.

NewDB returns new instance of DB.

NewTable returns new instance of Table.

ErrIncorrectColumnCount indicates that executor got incorrect column count.

ErrIncorrectColumnOrder indicates that executor got incorrect column order in tables.

ErrIncorrectTableRow indicates that executor got incorrect table row.

ErrIncorrectWhereTree indicates that executor got incorrect where tree.

ErrNotExistColumn indicates that given column doesn't exist.

ErrQueryTimeout indicates that time for executing query is out.

ErrTableColumnsRead indicates that executor can't read the table columns.

ErrTableConnection indicates that executor can't connect to the given table.

ErrTableDisconnection indicates that executor can't disconnect the table.

DB describes file database.

FileTableConnector implements TableConnector interface for working with files.

Table describes table entity.

TableConnector is the interface that groups the basic GetReader and Exists methods.