如何理解卷积运算

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1390221,1061242,471462,1446304,1278078,1789760,1321742,212638,1489695,735240,685290,432311,1713902,294798,315140,1074819,1095850,471554,570199,1647151,603795,1767450,1749538,1078863,227280,1083995,190403,603605,1102608,1289225) ORDER BY field (ArticleID,1390221,1061242,471462,1446304,1278078,1789760,1321742,212638,1489695,735240,685290,432311,1713902,294798,315140,1074819,1095850,471554,570199,1647151,603795,1767450,1749538,1078863,227280,1083995,190403,603605,1102608,1289225)