ArcGIS Pro 2.6 API Reference Guide
PrefixClause Property (QueryFilter)

ArcGIS.Core.Data Namespace > QueryFilter Class : PrefixClause Property
Gets or sets the prefix clause used by the filter.
Syntax
public string PrefixClause {get; set;}
Public Property PrefixClause As String
Remarks
A clause that will be inserted between the SELECT keyword and the SELECT COLUMN LIST (subfields). Most commonly used for clauses like DISTINCT or ALL, e.g., SELECT PrefixClause SubFields WHERE WhereClause PostfixClause.
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

QueryFilter Class
QueryFilter Members