To implement default filters on a form in Dynamics 365, mergeFilters is the standard SysQuery method used to combine multiple filter criteria into a single query. To capture sales in the "current sales period" (typically defined by the system date), the currentDate method from the SysQueryRangeUtil class is utilized within the query range to dynamically fetch the current session date. Finally, to filter a field for a specific string sequence ("Wholesales"), the standard syntax in Finance and Operations uses asterisks as wildcards. The clause *Wholesales* ensures the system returns any record where the Customer name contains "Wholesales" anywhere within the string.

Microsoft Learn: Advanced filtering and query syntax, Section: "Relational operators and special characters" (Asterisk usage for 'contains').

Microsoft Learn: SysQueryRangeUtil class, Method: currentDate() (Returns the system date for query ranges).

Microsoft Dynamics 365 X++ Reference: SysQuery::mergeFilters method documentation for query manipulation.

Microsoft Dynamics 365 Finance and Operations Developer Guide: Building Queries, Chapter on "Range Values and Expressions".