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地板

楼主 |
发表于 2006-10-20 15:09:08
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只看该作者
to Vessa
要学会自己看HELP嘛,HELP里都有解释的呀。
[quote:41d4b]The $w. informat trims leading blanks and left aligns the values before storing the text. In addition, if a field contains only blanks and a single period, $w. converts the period to a blank because it interprets the period as a missing value. The $w. informat treats two or more periods in a field as character data.[/quote:41d4b][quote:41d4b]The $CHARw. informat does not trim leading and trailing blanks or convert a single period in the input data field to a blank before storing values. If you use $CHARw. in an INFORMAT or ATTRIB statement within a DATA step to read list input, then by default SAS interprets any blank embedded within data as a field delimiter, including leading blanks.[/quote:41d4b] |
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