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Optimize postgresql selects.

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git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2548 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
This commit is contained in:
Marcel Molina
2005-10-13 03:01:33 +00:00
parent a91423ed5b
commit 140a5f8f7b
2 changed files with 20 additions and 18 deletions
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2
activerecord/CHANGELOG
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@@ -1,5 +1,7 @@
*SVN*
* Optimize postgresql selects. [skaes@web.de]
* Update DB2 adapter. #2206. [contact@maik-schmidt.de]
* Corrections to SQLServer native data types. #2267. [rails.20.clarry@spamgourmet.com]

36
activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
View File

@@ -250,24 +250,24 @@ module ActiveRecord
def select(sql, name = nil)
res = execute(sql, name)
results = res.result
rows = []
if results.length > 0
fields = res.fields
results.each do |row|
hashed_row = {}
row.each_index do |cel_index|
column = row[cel_index]
if res.type(cel_index) == BYTEA_COLUMN_TYPE_OID
column = unescape_bytea(column)
end
hashed_row[fields[cel_index]] = column
end
rows << hashed_row
end
end
return rows
end
rows = []
if results.length > 0
fields = res.fields
hash_prototype = fields.inject({}){ |proto, field| proto[field] = nil; proto }
results.each do |row|
hashed_row = hash_prototype.clone
row.each_index do |col_num|
if res.type(col_num) == BYTEA_COLUMN_TYPE_OID
hashed_row[fields[col_num]] = unescape_bytea(row[col_num])
else
hashed_row[fields[col_num]] = row[col_num]
end
end
rows << hashed_row
end
end
rows
end
def escape_bytea(s)
if PGconn.respond_to? :escape_bytea
self.class.send(:define_method, :escape_bytea) do |s|