表格里怎么自动算乘法

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select * from tbl_Articles WHERE ArticleID=715327 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=715327 LIMIT 0,1
select * from tbl_Articles_sphinx where id=715327 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(722516,3300455,641409,3497093,1156979,1214656,2426962,930510,3358535,3375542,918305,488149,2094440,416385,1526440,748476,3080035,1168028,1161714,2382951,3480602,873244,1490559,3463533,428467,1064934,1167110,614527,2735993,1010207) ORDER BY field (ArticleID,722516,3300455,641409,3497093,1156979,1214656,2426962,930510,3358535,3375542,918305,488149,2094440,416385,1526440,748476,3080035,1168028,1161714,2382951,3480602,873244,1490559,3463533,428467,1064934,1167110,614527,2735993,1010207)