ActiveRecord::Base.connection()的问题

[ViVAJoy2008]

sql = ActiveRecord::Base.connection()
begin
sql.begin_db_transaction


table_name = "snapshots_#{project_id}"
sql_statement_list = [" insert into snapshot_custom_fields(project_id, name, function_name, params, kanji_name, created_on) values " <<
" (#{project_id},'period_status','fxs_func_current_status_max','f_tracker_name, f_status_type', '目前状態', now()) ",

" ALTER TABLE #{table_name} ADD COLUMN period_status VARCHAR(255) NULL ;　" ]

sql_statement_list.each do |sql_statement|
sql.insert sql_statement
end

sql.commit_db_transaction

rescue ActiveRecord::Exception => exc
logger.error("#{exc.message}")
sql.rollback_db_transaction()
end

这段代码中 sql_statement_list.each迭代到第二个元素后，执行sql.insert sql_statement就出错，错误说明：
uninitialized constant ActiveRecord::Exception
高手帮忙看看什么原因，先谢了

[ViVAJoy2008]

去掉分号就好了，不知道为什么

[xiaodeshi]

你是说执行语句里的;号?
不明白.如果想表达,最好使用代码显示工具,这样大家好分析