0

私の環境はRuby 1.8.7-p358 with Rails 2.3.11. accounts数字のみを含むものすべてを照会しようとしていますfirst_name(それらはすべて 3 桁の整数、つまり 001、143、815 などです)。私はこのクエリを使用しようとしています:

Account.find(:all, :conditions => ["first_name LIKE ?", "[^0-9][^0-9][^0-9]"])

見返りは だけ=> []です。

同じクエリを のみで使用すると、 が整数のものも含めてNOT LIKEすべて取得されます。accountsfirst_name

私も使ってみました：

Account.find(:all, :conditions => ["first_name REGEXP ?", "[^0-9][^0-9][^0-9]"])

しかし、それは私に与えるだけです:

ActiveRecord::StatementInvalid: PGError: ERROR:  syntax error at or near "REGEXP"
LINE 1: SELECT * FROM "accounts" WHERE (first_name REGEXP '[0-9][0-9...
                                               ^

: SELECT * FROM "accounts" WHERE (first_name REGEXP '[0-9][0-9][0-9]')  ORDER BY first_name ASC
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract_adapter.rb:227:in `log'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/connection_adapters/postgresql_adapter.rb:520:in `execute'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/connection_adapters/postgresql_adapter.rb:1002:in `select_raw'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/connection_adapters/postgresql_adapter.rb:989:in `select'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `select_all_without_query_cache'
      from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/query_cache.rb:62:in `select_all'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/base.rb:665:in `find_by_sql'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/base.rb:1582:in `find_every'
  from /Users/kyle/.rvm/gems/ruby-1.8.7-p358@popcorn_recruiter_portal/gems/activerecord-2.3.11/lib/active_record/base.rb:619:in `find'
  from (irb):189
  from :0

正規表現は許可されていませんか? 3 桁の整数に等しいaccountaでそれぞれを見つけるにはどうすればよいですか?first_name

4

1 に答える 1

2

演算子はlike正規表現を評価しません。代わりに、両方を使用できますsimilar to：

select '980' similar to '[0-9][0-9][0-9]';
 ?column? 
----------
 t

または~：

select '980' ~ '[0-9][0-9][0-9]';
 ?column? 
----------
 t
(1 row)
于 2012-10-18T17:43:14.647 に答える