Deletes all documents matching the given query

# SolrClient::deleteByQuery

(PECL solr >= 0.9.2)

SolrClient::deleteByQuery — Deletes all documents matching the given query

### 説明

public function SolrClient::deleteByQuery(string `$query`): SolrUpdateResponse

Deletes all documents matching the given query.

### パラメータ

`query`

  The query

### 戻り値

Returns a SolrUpdateResponse on success and throws an exception on failure.

### エラー / 例外

Throws SolrClientException if the client had failed, or there was a connection issue.

Throws SolrServerException if the Solr Server had failed to process the request.

### 例

例1 SolrQuery::deleteByQuery() example

    <?php

    $options = array
    (
        'hostname' => SOLR_SERVER_HOSTNAME,
        'login'    => SOLR_SERVER_USERNAME,
        'password' => SOLR_SERVER_PASSWORD,
        'port'     => SOLR_SERVER_PORT,
    );

    $client = new SolrClient($options);

    //This will erase the entire index
    $client->deleteByQuery("*:*");
    $client->commit();

    ?>

### 参考

- SolrClient::deleteById() - Delete by Id
- SolrClient::deleteByIds() - Deletes by Ids
- SolrClient::deleteByQueries() - Removes all documents matching any of the queries

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