Sha256: ff3ce0f706bd12d8f17e99d06dbfec031f6b3551de4fbcdec9f9ff6cc46e3322
Contents?: true
Size: 1.22 KB
Versions: 34
Compression:
Stored size: 1.22 KB
Contents
class AddUniqueIndexOnCustomFieldsTrackers < ActiveRecord::Migration
def up
table_name = "#{CustomField.table_name_prefix}custom_fields_trackers#{CustomField.table_name_suffix}"
duplicates = CustomField.connection.select_rows("SELECT custom_field_id, tracker_id FROM #{table_name} GROUP BY custom_field_id, tracker_id HAVING COUNT(*) > 1")
duplicates.each do |custom_field_id, tracker_id|
# Removes duplicate rows
CustomField.connection.execute("DELETE FROM #{table_name} WHERE custom_field_id=#{custom_field_id} AND tracker_id=#{tracker_id}")
# And insert one
CustomField.connection.execute("INSERT INTO #{table_name} (custom_field_id, tracker_id) VALUES (#{custom_field_id}, #{tracker_id})")
end
if index_exists? :custom_fields_trackers, [:custom_field_id, :tracker_id]
remove_index :custom_fields_trackers, [:custom_field_id, :tracker_id]
end
add_index :custom_fields_trackers, [:custom_field_id, :tracker_id], :unique => true
end
def down
if index_exists? :custom_fields_trackers, [:custom_field_id, :tracker_id]
remove_index :custom_fields_trackers, [:custom_field_id, :tracker_id]
end
add_index :custom_fields_trackers, [:custom_field_id, :tracker_id]
end
end
Version data entries
34 entries across 34 versions & 1 rubygems