diff options
Diffstat (limited to 'lib/arel/engines')
| -rw-r--r-- | lib/arel/engines/sql/core_extensions/array.rb | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/arel/engines/sql/core_extensions/array.rb b/lib/arel/engines/sql/core_extensions/array.rb index 80041cb5f3..72f579b7eb 100644 --- a/lib/arel/engines/sql/core_extensions/array.rb +++ b/lib/arel/engines/sql/core_extensions/array.rb @@ -2,7 +2,11 @@ module Arel module Sql module ArrayExtensions def to_sql(formatter = nil) - "(" + collect { |e| e.to_sql(formatter) }.join(', ') + ")" + if any? + "(" + collect { |e| e.to_sql(formatter) }.join(', ') + ")" + else + "(NULL)" + end end def inclusion_predicate_sql |