ack! query failed : <li>errorno=1052<li>error=Column 'm_bcid' in where clause is ambiguous<li>query=
				SELECT
					*
				FROM
					m_blog_cats t1,
					m_blog t2
				WHERE
					(t1.m_bcid IN(2) OR t1.m_bparentcid IN(2))
				AND 
					(t1.m_bcid=t2.m_bcid)
				AND
					m_bdisplay IN('yes')
				AND
					m_bcid != 2
				GROUP BY
					t2.m_bid
				ORDER BY
					m_bdate DESC LIMIT 0,6