Method GetAggregateSqlPreviewAsync<TProps, TResult>(QueryContext<TProps>, Expression<Func<RedbObject<TProps>, TResult>>)
Pro Override: SQL Preview for aggregation
public override Task<string> GetAggregateSqlPreviewAsync<TProps, TResult>(QueryContext<TProps> context, Expression<Func<RedbObject<TProps>, TResult>> selector) where TProps : class, new()