spss中怎样抽取随机样本

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select * from tbl_Articles WHERE ArticleID=1474607 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1474607 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1474607 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1605194,2228612,709087,108493,2139789,1062018,1122801,1482199,2908792,3181997,1123291,2888850,1692754,1344413,2420675,161204,3379520,347638,108223,3107937,2053983,2680429,2784925,1750691,224540,593195,177103,2947347,608146,3072787) ORDER BY field (ArticleID,1605194,2228612,709087,108493,2139789,1062018,1122801,1482199,2908792,3181997,1123291,2888850,1692754,1344413,2420675,161204,3379520,347638,108223,3107937,2053983,2680429,2784925,1750691,224540,593195,177103,2947347,608146,3072787)