select attention_user_account_id,mutual_attention,id,user_account_id from forum_attention where attention_user_account_id=#{userAccountId} or user_account_id=#{userAccountId} and mutual_attention=1
select count(*) from forum_attention where attention_user_account_id=#{userAccountId}
select attention_user_account_id,mutual_attention,id,user_account_id from forum_attention where attention_user_account_id=#{userAccountId} or user_account_id=#{userAccountId} and mutual_attention=1