# File lib/dm-core/migrations.rb, line 100 def field_exists?(storage_name, column_name) statement = "SELECT COUNT(*)\nFROM \"information_schema\".\"columns\"\nWHERE \"table_schema\" = ?\nAND \"table_name\" = ?\nAND \"column_name\" = ?\n".compress_lines query(statement, schema_name, storage_name, column_name).first > 0 end