DB.scope

Scope object is a member of the data object. It provides the ability to set and modify SQL expressions, which define the criteria by which the records are filtered. The SQL syntax can vary from one database system to another. The scope object can translate standard SQL syntax into one that is native to a specific database system thereby improving performance and resolving compatibility issues. Some database-specific features may be unavailable because of this translation. Set the check_syntax parameter to false to disable the translation, in which case the SQL expression will be used as is.