`billable` tinyint(4) default NULL, # whether to include billable, not billable, or all records
`invoice` tinyint(4) default NULL, # whether to include invoiced, not invoiced, or all records
`paid_status` tinyint(4) default NULL, # whether to include paid, not paid, or all records
`billable` tinyint(4) default NULL, # whether to include billable, not billable, or all records
`invoice` tinyint(4) default NULL, # whether to include invoiced, not invoiced, or all records
`paid_status` tinyint(4) default NULL, # whether to include paid, not paid, or all records