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Дата изменения: Tue Aug 16 00:41:14 2005
Дата индексирования: Sat Dec 22 11:18:09 2007
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Поисковые слова: integral

XMM-Newton Science Analysis System


selectlib (selectlib-4.68) [xmmsas_20050815_1803-6.5.0]

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Table column names

Column identifiers can refer to table columns of scalar integral, floating point, boolean, or string type. Mixed-type arithmetic is supported with the exception that names of boolean and string columns must not be used in arithmetic sub-expressions. Names of boolean columns are valid logical sub-expressions, i.e., they do not need to be used in conjunction with the equality operators ==/!= and constants true/false to form valid logical sub-expressions, e.g. BOOLCOL==true is equivalent to BOOLCOL.

Vector columns are not yet supported.