diff options
Diffstat (limited to 'activerecord/lib/arel')
| -rw-r--r-- | activerecord/lib/arel/factory_methods.rb | 4 | ||||
| -rw-r--r-- | activerecord/lib/arel/visitors/to_sql.rb | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/activerecord/lib/arel/factory_methods.rb b/activerecord/lib/arel/factory_methods.rb index b828bc274e..83ec23e403 100644 --- a/activerecord/lib/arel/factory_methods.rb +++ b/activerecord/lib/arel/factory_methods.rb @@ -41,5 +41,9 @@ module Arel # :nodoc: all def lower(column) Nodes::NamedFunction.new "LOWER", [Nodes.build_quoted(column)] end + + def coalesce(*exprs) + Nodes::NamedFunction.new "COALESCE", exprs + end end end diff --git a/activerecord/lib/arel/visitors/to_sql.rb b/activerecord/lib/arel/visitors/to_sql.rb index 81ca63f261..40c626c725 100644 --- a/activerecord/lib/arel/visitors/to_sql.rb +++ b/activerecord/lib/arel/visitors/to_sql.rb @@ -637,7 +637,7 @@ module Arel # :nodoc: all def visit_Arel_Nodes_Assignment(o, collector) case o.right - when Arel::Nodes::UnqualifiedColumn, Arel::Attributes::Attribute, Arel::Nodes::BindParam + when Arel::Nodes::Node, Arel::Attributes::Attribute collector = visit o.left, collector collector << " = " visit o.right, collector |