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<?php |
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declare(strict_types=1); |
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|
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namespace Give\Framework\Database\Actions; |
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|
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class EnableBigSqlSelects |
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{ |
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/** |
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* @since 2.22.0 |
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* |
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* Enables mysql big selects for the session using a session system variable. |
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* |
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* This is necessary for hosts that have an arbitrary MAX_JOIN_SIZE limit, which prevents more complex queries from |
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* running properly. Setting SQL_BIG_SELECTS ignores this limit. This is also done by WooCommerce, supporting the |
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* idea that this is a viable option. There also doesn't seem to be a way for hosts to prevent this. |
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* |
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* @see https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_sql_big_selects |
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* @see https://dev.mysql.com/doc/refman/5.7/en/system-variable-privileges.html |
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* |
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*/ |
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public function __invoke() |
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{ |
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static $bigSelects = false; |
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|
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if (!$bigSelects) { |
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global $wpdb; |
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|
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$wpdb->query('SET SESSION SQL_BIG_SELECTS=1;'); |
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$bigSelects = true; |
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} |
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} |
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} |
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