1054. Query Error 1054: Unknown column 'p.NULL' in 'ORDER BY' Query: SELECT p.*,p.id,p.sku_id,p.image_id,p.image_filename,p.ext,(p.count > 0 || p.count IS NULL) AS in_stock FROM shop_product p JOIN shop_category_products cp1 ON p.id = cp1.product_id WHERE p.type_id IN (2) AND p.status = 1 AND cp1.category_id IN(18780,18781,18782,18783,18784,18785,18786,18787,18788,18789,18790,18791,18792,18793,18794,18795,18796,18797,18798,18799,18800,18801,18802,18803,18804,18805,18806,18807,18808,18809,18810,18811,18812,18813,18814,18815,18816,18817,18818,18819,18820,18821,18822,18823,18824,18825,18826,18827,18828,18829,18830,18831,18832,18833,18834,18835,18836,18837,18838,18839,18840,18841,18842,18843,18844,18845,18846,18847,18848,18849,18850,18851,18852,18853,18854,18855,18856,18857,18858,18859,18860,18861,18862,18863,18864,18865,18866,18867,18868,18869,18870,18871,18872,18873,18874,18875,18876,18877,18878,18879,18880,18881,18882,18883,18884,18885,18886,18887,18888,18889,18890,18891,18892,18893,18894,18895,18896,18897,18898,18899,18900,18901,18902,18903,18904,18905,18906,18907,18908,18909,18910,18911,18912,18913,18914,18915,18916,18917,18918,18919,18920,18921,18922,18923,18924,18925,18926,18927,18928,18929,18930,18931,18932,18933,18934,18935,18936,18937,18938,18939,18940,18941,18942,18943,18944,18945,18946,18947,18948,18949,18950,18951,18952,18953,18954,18955,18956,18957,18958,18959,18960,18961,18962,18963,18964,18965,18966,18967,18968,18969,18970,18971,18972,18973,18974,18975,18976,18977,18978,18979,18980,18981,18982,18983,18984,18985,18986,18987,18988,18989,18990,18991,18992,18993,18994,18995,18996,18997,18998,18999,19000) GROUP BY p.id ORDER BY in_stock DESC,p.NULL, p.id LIMIT 24