set @name = '%奥迪%'
select * from car where name like @name
set @user_id='1000555144';
set @id=(select id from customer where user_id =@user_id);
set @find='宝马'
if(@find='宝马')
begin
print '宝马汽车'
select * from Car where name like '%'+@find+'%'
end
else
begin
print '其它汽车'
select * from Car
end
其他见 https://www.cnblogs.com/woniu-net/p/4770312.html