Before applying any new features, be aware that:
One of the first three limit options (Show Values, Custom Values, or Custom SQL) must be enabled in order for users to apply limits in the Query section.
Changing join usage usually changes the number of rows retrieved from the database. It also introduces the possibility that novice users may create improperly joined queries.
If query governors are set as part of a data model, and end users set query governors on a query built from the data model, the more restrictive governor takes precedence.
The following sections provide additional information about data model options: