instance method `select_values`

Ruby on Rails 4.0.13

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

select_values(arel, name = nil)

Returns an array of the values of the first column in a select:

select_values("SELECT id FROM companies LIMIT 3") => [1,2,3]

Parameters

arel req
name opt = nil

Source

# File activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb, line 44
      def select_values(arel, name = nil)
        arel, binds = binds_from_relation arel, []
        select_rows(to_sql(arel, binds), name, binds).map(&:first)
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb line 44 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::DatabaseStatements

Signature

Parameters