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 LiveInternet.ru:
: 16.03.2006
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First Last

, 16 2018 . 11:42 +
2
1. Q1:
SELECT f1, f2, fDateTime, fCode FROM t1 WHERE fCode<>"" ORDER BY fCode, fDateTime

fDateTime .


2. Q2:
SELECT fCode, First(f1) AS f01, Last(f2) AS f02, Count(fCode) AS [CountFR] FROM Q1 GROUP BY fCode ORDER BY fCode


First Last , (.. Q1).

, Q1, Q2 .
?

http://www.sql.ru/forum/1298730/first-i-last-v-zaprose-po-zaprosu


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