Help:Query restrictions

This help page provides an overview to query restrictions and how to change them by adapting the respective configuration parameters.

Query size and depth
In case a query returns with a message like "" (with $1, $2 being placeholders)CiteRef::gh:smw:4003 the following configuration parameters and  define the restrictions applied before a query is executed:
 * defines the maximum number of conditions in queries
 * defines the maximum property depth of queries (e.g.  has depth 2)

Using result format "Debug" for the respective to output the computed size and depth of query and to analyze the restrictions applied to a query.

Limit query execution
The and  configuration parameters can be used to limit the execution of expensive   and   queries.