The agency says in volume terms, wholesale sales were up 0.1 per cent in March.
In March, four of seven subsectors reported gains, accounting for about two-thirds of wholesale sales.
Sales in the motor vehicle and parts subsector rose 2.0 per cent to $8.5 billion in March, its second consecutive increase.
Wholesale sales rose in Ontario, Saskatchewan and British Columbia.
The gains, though, were offset by drops in the other provinces, including a 3.5 per cent sales decline in Alberta.