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| author | Aaron Patterson <aaron.patterson@gmail.com> | 2010-09-14 13:39:33 -0700 |
|---|---|---|
| committer | Aaron Patterson <aaron.patterson@gmail.com> | 2010-09-14 13:39:33 -0700 |
| commit | b93a23827a2244ec730be1b46ec44fb368d00396 (patch) | |
| tree | 6fe68c4c927512b5f3914c5c8e795ce998208491 /lib/arel/visitors/to_sql.rb | |
| parent | de5f2916aa47fb1274d56a2c5c5ba636f5fe2cc4 (diff) | |
| download | rails-b93a23827a2244ec730be1b46ec44fb368d00396.tar.gz rails-b93a23827a2244ec730be1b46ec44fb368d00396.tar.bz2 rails-b93a23827a2244ec730be1b46ec44fb368d00396.zip | |
adding an EXISTS node, update method will generate an IN clause
Diffstat (limited to 'lib/arel/visitors/to_sql.rb')
| -rw-r--r-- | lib/arel/visitors/to_sql.rb | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/arel/visitors/to_sql.rb b/lib/arel/visitors/to_sql.rb index 2660c7d284..dc65e86219 100644 --- a/lib/arel/visitors/to_sql.rb +++ b/lib/arel/visitors/to_sql.rb @@ -41,6 +41,10 @@ module Arel ].compact.join ' ' end + def visit_Arel_Nodes_Exists o + "EXISTS (#{visit o.select_stmt})" + end + def visit_Arel_Nodes_Values o "VALUES (#{o.expressions.map { |value| value.nil? ? 'NULL' : visit(value) |