无理数是实数吗?

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select * from tbl_Articles WHERE ArticleID=709784 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=709784 LIMIT 0,1
select * from tbl_Articles_sphinx where id=709784 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1312367,1171605,1077688,370917,696421,1048551,3454501,907948,1181028,832441,1212745,983550,476013,600247,896273,363709,572158,401079,402893,450472,544206,566435,875764,570358,382858,712931,389041,1166944,420554,387778) ORDER BY field (ArticleID,1312367,1171605,1077688,370917,696421,1048551,3454501,907948,1181028,832441,1212745,983550,476013,600247,896273,363709,572158,401079,402893,450472,544206,566435,875764,570358,382858,712931,389041,1166944,420554,387778)