instance method `distinct`

Ruby on Rails 3.1.12

Since v2.2.3 Last seen in v4.0.13

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13

Compare with:

distinct(columns, order_by)

SELECT DISTINCT clause for a given set of columns and a given ORDER BY clause. Both PostgreSQL and Oracle overrides this for custom DISTINCT syntax.

distinct("posts.id", "posts.created_at desc")

Parameters

columns req
order_by req

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 502
      def distinct(columns, order_by)
        "DISTINCT #{columns}"
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb line 502 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::SchemaStatements

Signature

Parameters