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: 16.03.2006
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, 10 2014 . 09:17 +
. , , . 2 .
, (app_name). , (GF, Shed_primary). ( - kind_signal). 3 (.. kind_signal Ĕ,Ĕ,Ӕ )
SELECT apparature.app_name, buildings.GF, buildings.Shed_primary, COUNT (apparature.kind_signal)
FROM apparature INNER JOIN (buildings INNER JOIN OBJ_APP ON buildings.ID_OBJ = OBJ_APP.ID_OBJ) ON apparature.ID_APP = OBJ_APP.ID_APP
WHERE apparature.kind_signal = ''
GROUP BY  apparature.app_name, buildings.GF, buildings.Shed_primary


, , ?

http://www.sql.ru/forum/1088134/zapros-s-podschetom-kolichestva-treh-tipov-znacheniy-polya


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