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我必須從我的Rails應用程序連接到Java應用程序上的遠程數據庫。重構SQL
我有這樣的查詢:
find_by_sql("select c_templateid, c_templateinfoid, c_startdate, c_enddate, c_active,
campaign, shortcode, prefix, c_descriptivename, c_description, c_templatename
from (active_services aser join activity a on aser.c_primaryprefixid =
a.c_primaryprefixid) join matrix_templateinfo using(c_templateinfoid)
where campaign is not null)")
我需要把它重構到AR#find()方法,因爲我想在以後添加複雜的:它的條件。我不想將它們轉換爲字符串,然後再追加到find_by_sql方法。
find(:all,
:select => "c_templateid, c_templateinfoid, c_startdate, c_enddate, c_active,
campaign, shortcode, prefix, c_descriptivename, c_description, c_templatename",
# :joins => WHAT I SHOULD DO HERE ?
:conditions => "campaign is not null"
)
我已經重構它的http:/ /gist.github.com/487539,但我不知道這個查詢是否相同? – astropanic 2010-07-24 16:59:55