left函数怎么用

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select * from tbl_Articles WHERE ArticleID=3445683 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3445683 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3445683 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1339665,2753699,1505918,2503679,1103867,2404951,203775,1898199,1077142,1515098,2364621,2691102,2582440,2551079,2730761,2750078,1067271,2208599,2424129,2232177,1063613,2591930,1070126,2197988,1745088,1328130,2625231,2301778,1634581,1407305) ORDER BY field (ArticleID,1339665,2753699,1505918,2503679,1103867,2404951,203775,1898199,1077142,1515098,2364621,2691102,2582440,2551079,2730761,2750078,1067271,2208599,2424129,2232177,1063613,2591930,1070126,2197988,1745088,1328130,2625231,2301778,1634581,1407305)