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<?php |
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namespace Lagdo\DbAdmin\Driver\MySql\Db; |
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use Lagdo\DbAdmin\Driver\Db\Server as AbstractServer; |
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use Lagdo\DbAdmin\Driver\Db\StatementInterface; |
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use function array_key_exists; |
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use function is_a; |
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use function intval; |
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use function preg_match; |
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class Server extends AbstractServer |
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{ |
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/** |
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* @inheritDoc |
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*/ |
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public function databases(bool $flush) |
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{ |
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// !!! Caching and slow query handling are temporarily disabled !!! |
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$query = $this->driver->minVersion(5) ? |
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"SELECT SCHEMA_NAME FROM information_schema.SCHEMATA ORDER BY SCHEMA_NAME" : |
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"SHOW DATABASES"; |
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return $this->driver->values($query); |
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// SHOW DATABASES can take a very long time so it is cached |
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// $databases = get_session("dbs"); |
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// if ($databases === null) { |
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// $query = ($this->driver->minVersion(5) |
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// ? "SELECT SCHEMA_NAME FROM information_schema.SCHEMATA ORDER BY SCHEMA_NAME" |
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// : "SHOW DATABASES" |
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// ); // SHOW DATABASES can be disabled by skip_show_database |
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// $databases = ($flush ? slow_query($query) : $this->driver->values($query)); |
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// restart_session(); |
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// set_session("dbs", $databases); |
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// stop_session(); |
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// } |
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// return $databases; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function databaseSize(string $database) |
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{ |
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$statement = $this->driver->execute("SELECT SUM(data_length + index_length) " . |
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"FROM information_schema.tables where table_schema=" . $this->driver->quote($database)); |
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if (is_a($statement, StatementInterface::class) && ($row = $statement->fetchRow())) { |
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return intval($row[0]); |
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} |
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return 0; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function databaseCollation(string $database, array $collations) |
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{ |
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$collation = null; |
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$create = $this->driver->result("SHOW CREATE DATABASE " . $this->driver->escapeId($database), 1); |
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if (preg_match('~ COLLATE ([^ ]+)~', $create, $match)) { |
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$collation = $match[1]; |
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} elseif (preg_match('~ CHARACTER SET ([^ ]+)~', $create, $match)) { |
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// default collation |
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$collation = $collations[$match[1]][-1]; |
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} |
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return $collation; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function engines() |
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{ |
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$engines = []; |
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foreach ($this->driver->rows("SHOW ENGINES") as $row) { |
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if (preg_match("~YES|DEFAULT~", $row["Support"])) { |
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$engines[] = $row["Engine"]; |
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} |
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} |
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return $engines; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function collations() |
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{ |
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$collations = []; |
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foreach ($this->driver->rows("SHOW COLLATION") as $row) { |
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if ($row["Default"]) { |
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$collations[$row["Charset"]][-1] = $row["Collation"]; |
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} else { |
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$collations[$row["Charset"]][] = $row["Collation"]; |
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} |
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} |
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ksort($collations); |
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foreach ($collations as $key => $val) { |
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asort($collations[$key]); |
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} |
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return $collations; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function isInformationSchema(string $database) |
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{ |
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return ($this->driver->minVersion(5) && $database == "information_schema") |
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|| ($this->driver->minVersion(5.5) && $database == "performance_schema"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function createDatabase(string $database, string $collation) |
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{ |
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$result = $this->driver->execute("CREATE DATABASE " . $this->driver->escapeId($database) . |
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($collation ? " COLLATE " . $this->driver->quote($collation) : "")); |
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return $result !== false; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function dropDatabases(array $databases) |
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{ |
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return $this->driver->applyQueries("DROP DATABASE", $databases, function ($database) { |
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return $this->driver->escapeId($database); |
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}); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function renameDatabase(string $name, string $collation) |
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{ |
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// The feature is not natively provided by latest MySQL versions, thus it is disabled here. |
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return false; |
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/*$renamed = false; |
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if ($this->createDatabase($name, $collation)) { |
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$tables = []; |
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$views = []; |
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foreach ($this->driver->tables() as $table => $type) { |
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if ($type == 'VIEW') { |
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$views[] = $table; |
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} else { |
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$tables[] = $table; |
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} |
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} |
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$renamed = (!$tables && !$views) || $this->driver->moveTables($tables, $views, $name); |
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$this->dropDatabases($renamed ? [$this->driver->database()] : []); |
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} |
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return $renamed;*/ |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function routineLanguages() |
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{ |
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return []; // "SQL" not required |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function variables() |
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{ |
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return $this->driver->keyValues("SHOW VARIABLES"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function processes() |
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{ |
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return $this->driver->rows("SHOW FULL PROCESSLIST"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function processAttr(array $process, string $key, string $val): string |
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{ |
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$match = array_key_exists('Command', $process) && preg_match("~Query|Killed~", $process["Command"]); |
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if ($key == "Info" && $match && $val != "") { |
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return '<code>' . $this->util->shortenUtf8($val, 50) . '</code>' . $this->trans->lang('Clone'); |
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} |
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return parent::processAttr($process, $key, $val); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function statusVariables() |
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{ |
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return $this->driver->keyValues("SHOW STATUS"); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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// public function killProcess($val) |
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// { |
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// return $this->driver->execute("KILL " . $this->util->number($val)); |
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// } |
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/** |
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* @inheritDoc |
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*/ |
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// public function maxConnections() |
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// { |
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// return $this->driver->result("SELECT @@max_connections"); |
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// } |
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} |
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lagdo /
dbadmin-driver-mysql
