租赁时间不可交叉什么意思

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select * from tbl_Articles WHERE ArticleID=828885 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=828885 LIMIT 0,1
select * from tbl_Articles_sphinx where id=828885 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3215151,1918374,1095104,484379,410370,3079256,390709,87464,426422,3468116,3336364,501641,587454,466989,591116,1781530,422455,3465343,509274,2096065,564392,1060086,509275,976037,519152,424906,1351175,2491847,503787,426070) ORDER BY field (ArticleID,3215151,1918374,1095104,484379,410370,3079256,390709,87464,426422,3468116,3336364,501641,587454,466989,591116,1781530,422455,3465343,509274,2096065,564392,1060086,509275,976037,519152,424906,1351175,2491847,503787,426070)