Generate SQL to solve the problem from the following tales, and join tables if needed, do not join table if not needed.
Problem: total sales and count order by channelType.
Tables: 
Users( "memberId", "gender" ),
NAME_1( "orderId", "memberId",  "payment", "payTime",  "shopId",  "channelType" )
Output format: { "SQL": "<SQL>", "dimensions": [<dimensions>], "measures": [<measures>], "explanation_chinese": "<explanation_chinese>" } Please repeat the request first, then give your response.
user