收支两条线是指什么

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select * from tbl_Articles WHERE ArticleID=1355115 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1355115 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1355115 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(525175,1152870,3328584,2385254,3115338,597654,3219030,1657175,1449674,2472202,895190,3366355,2401688,443987,713871,471001,471049,740035,392363,2366879,3452728,1775128,3182237,1589694,1166032,947599,408168,2066691,3486961,2540204) ORDER BY field (ArticleID,525175,1152870,3328584,2385254,3115338,597654,3219030,1657175,1449674,2472202,895190,3366355,2401688,443987,713871,471001,471049,740035,392363,2366879,3452728,1775128,3182237,1589694,1166032,947599,408168,2066691,3486961,2540204)