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Помогите разобраться с select


bgraf
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Здравствуйте!

Почему, и вообще возможно ли, не работает такой запрос.

select big_flash FROM `data_serveses_flash` 
WHERE uniq_id = (select uniq_id from data_serveses_names where paid = 1) and big_flash!='';

data_serveses_flash.uniq_id и data_serveses_names.uniq_id уникальные.

А задача заключается в том, чтобы из data_serveses_flash выбрать все big_flash, но при условии, что в data_serveses_names, paid = 1 и data_serveses_flash.big_flash!=''

Спасибо всем !

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Если бы вы структуру таблиц (в виде create-code, например) привели, было бы проще сообразить, чем вот так на пальцах объяснять.

спасибо, я постараюсь.

скажите сделал так

select big_flash FROM `data_serveses_flash` 
WHERE uniq_id [b]IN[/b] (select uniq_id from data_serveses_names where paid = 1) and big_flash!='';

заработала в чем дело?

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