Ticket #10331: change_oracleadapter_indexes_to_run_quicker.diff

File change_oracleadapter_indexes_to_run_quicker.diff, 1.4 kB (added by lisa, 2 years ago)
Patch to increase speed of OracleAdapter#indexes SQL

lib/active_record/connection_adapters/oracle_adapter.rb

old	new
299	299	end
300	300
301	301	def indexes(table_name, name = nil) #:nodoc:
302		result = select_all(<<-SQL, name)
	302	owner = @connection.describe(table_name).first
	303
	304	result = select_all(<<-SQL,name)
303	305	SELECT lower(i.index_name) as index_name, i.uniqueness, lower(c.column_name) as column_name
304		FROM user_indexes i, user_ind_columns c
305		WHERE i.table_name = '#{table_name.to_s.upcase}'
306		AND c.index_name = i.index_name
307		AND i.index_name NOT IN (SELECT uc.index_name FROM user_constraints uc WHERE uc.constraint_type = 'P')
308		ORDER BY i.index_name, c.column_position
	306	FROM all_indexes i, all_ind_columns c
	307	WHERE
	308	i.owner = '#{owner}' and c.INDEX_OWNER = '#{owner}'
	309	and i.table_name = '#{table_name.to_s.upcase}'
	310	AND c.index_name = i.index_name
	311	AND i.index_name NOT IN (SELECT uc.index_name FROM user_constraints uc WHERE uc.constraint_type = 'P')
	312	ORDER BY i.index_name, c.column_position
309	313	SQL
310	314
311	315	current_index = nil