为何 这段SQL查询一个AND 条件就会卡死？

SELECT DISTINCT t_BOSqlgxhb.FID,t_BOSqlgxhb.FClassTypeID ,t_BOSqlgxhbEntry.FEntryID,t_BOSqlgxhbEntry.FIndex,t_User.FName FROM t_BOSqlgxhb
INNER JOIN t_BOSqlgxhbEntry ON t_BOSqlgxhb.FID=t_BOSqlgxhbEntry.FID
LEFT JOIN t_Item_3013 ON t_BOSqlgxhb.FGX=t_Item_3013.FItemID AND t_Item_3013.FItemID>0
LEFT JOIN t_User ON t_BOSqlgxhb.FBiller=t_User.FUserID AND t_User.FUserID>0
LEFT JOIN t_User t_User2 ON t_BOSqlgxhb.FModifier=t_User2.FUserID AND t_User2.FUserID>0
LEFT JOIN t_ICItem t_ICItem1 ON t_BOSqlgxhbEntry.FBase9=t_ICItem1.FItemID AND t_ICItem1.FItemID>0
LEFT JOIN t_ICItem ON t_BOSqlgxhbEntry.FitemID=t_ICItem.FItemID AND t_ICItem.FItemID>0
LEFT JOIN t_Item t_ICItem_FBaseProperty1 ON t_ICItem.F_121=t_ICItem_FBaseProperty1.FItemID AND t_ICItem_FBaseProperty1.FItemID>0
LEFT JOIN t_Item t_ICItem_FBaseProperty2 ON t_ICItem.F_150=t_ICItem_FBaseProperty2.FItemID AND t_ICItem_FBaseProperty2.FItemID>0
LEFT JOIN t_Item t_ICItem_FBaseProperty10 ON t_ICItem.F_141=t_ICItem_FBaseProperty10.FItemID AND t_ICItem_FBaseProperty10.FItemID>0
LEFT JOIN t_Item t_ICItem_FBaseProperty11 ON t_ICItem.F_131=t_ICItem_FBaseProperty11.FItemID AND t_ICItem_FBaseProperty11.FItemID>0
LEFT JOIN t_Measureunit ON t_BOSqlgxhbEntry.Funit=t_Measureunit.FItemID AND t_Measureunit.F