Reproduction steps:

• Use PostgreSQL
• View projects/index
• Add "Subproject of" filter
• Set the operator of the "Subproject of" filter to "is" or "is not"
• Set the value of the "Subproject of" filter to << my projects >> or << my bookmarks >>
• Apply => An exception occurs

!{width: 70%; border: 1px solid #ccc}projects.png!

Error message:

ActiveRecord::StatementInvalid (PG::InvalidTextRepresentation: ERROR:  invalid input syntax for integer: "mine"
LINE 1: ...rojects.status <> 9) AND ((projects.parent_id IN ('mine'))) ...
                                                             ^
: SELECT "projects".* FROM "projects" WHERE (projects.status <> 9) AND ((projects.parent_id IN ('mine'))) ORDER BY projects.lft ASC):

app/controllers/projects_controller.rb:57:in `block (2 levels) in index'
app/controllers/projects_controller.rb:53:in `index'
lib/redmine/sudo_mode.rb:64:in `sudo_mode'

Executing the SELECT statement without converting << my projects >>('mine') and << my bookmarks >>('bookmarks') to actual ids is the cause of this problem.