Enables a user to specify a custom SQL string in the Data Source wizard.
true, to allow a user to specify a custom SQL string in the Data Source wizard; otherwise, false.
Note that the DashboardSourceModel.ValidateCustomSqlQuery event is raised each time an end-user creates a new SQL data source/custom SQL query in the Data Source wizard or edits the existing data source/SQL Query.
Execution of custom SQL queries is forbidden by default. Use the AllowExecutingCustomSql property to allow the Web Dashboard to execute SQL queries on the server side.
The use of custom SQL queries may lead to inadvertent or unauthorized modifications to your data/database structure. Therefore, make sure that you follow best practices and implement the appropriate end-user read/write privileges at the database level.
See Custom SQL Queries for more information.