# SolrQuery::setFacetMissing

(PECL solr >= 0.9.2)

SolrQuery::setFacetMissing — Maps to facet.missing

### 说明

public SolrQuery::setFacetMissing(bool `$flag`, string `$field_override` = ?): SolrQuery

Used to indicate that in addition to the Term-based constraints of a facet field, a count of all matching results which have no value for the field should be computed

### 参数

`flag`

  `true` turns this feature on. `false` disables it.

`field_override`

  The name of the field.

### 返回值

Returns the current SolrQuery object, if the return value is used.

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