diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/arel/visitors/to_sql.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/arel/visitors/to_sql.rb b/lib/arel/visitors/to_sql.rb index cbe2b6cca3..5a92e27149 100644 --- a/lib/arel/visitors/to_sql.rb +++ b/lib/arel/visitors/to_sql.rb @@ -155,7 +155,9 @@ module Arel end def visit_Arel_Nodes_In o - "#{visit o.left} IN (#{o.right.map { |x| visit x }.join ', '})" + right = o.right + right = right.empty? ? 'NULL' : right.map { |x| visit x }.join(', ') + "#{visit o.left} IN (#{right})" end def visit_Arel_Nodes_And o |