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fix calculations for the Oracle Adapter (closes #4626) [Michael Schoen]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4192 
5ecf4fe2-1ee6-0310-87b1-e25e094e27de
technoweenie (author)
Thu Apr 06 13:10:44 -0700 2006
commit  9466211d42ce7ecd921ef6804e77d199e1677d89
tree    4e36b50320e64360cfc9b2b0c4fbfa88abb4e400
parent  496725022a09cd2100e1550745064fb5a6308ee4
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activerecord/lib/active_record/calculations.rb 
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@@ -145,7 +145,7 @@
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       protected
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         def construct_calculation_sql(aggregate, aggregate_alias, options) #:nodoc:
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           scope = scope(:find)
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-          sql  = ["SELECT #{aggregate} AS #{aggregate_alias}"]
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+          sql  = "SELECT #{aggregate} AS #{aggregate_alias}"
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           sql << ", #{options[:group_field]} AS #{options[:group_alias]}" if options[:group]
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           sql << " FROM #{table_name} "
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           add_joins!(sql, options, scope)
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@@ -154,7 +154,7 @@
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           sql << " HAVING #{options[:having]}" if options[:group] && options[:having]
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           sql << " ORDER BY #{options[:order]}" if options[:order]
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           add_limit!(sql, options)
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-          sql.join
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+          sql
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         end
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         def execute_simple_calculation(operation, column_name, column, aggregate, aggregate_alias, options) #:nodoc:

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