SphinxClient
PHP Manual

SphinxClient::setGroupDistinct

Set attribute name for per-group distinct values count calculations

Description

public bool SphinxClient::setGroupDistinct ( string $attribute )

Sets attribute name for per-group distinct values count calculations. Only available for grouping queries. For each group, all values of attribute will be stored, then the amount of distinct values will be calculated and returned to the client. This feature is similar to COUNT(DISTINCT) clause in SQL.

Parameters

attribute

A string containing group-by attribute name.

Return Values

Returns TRUE on success or FALSE on failure.