function Connection::query

Same name in this branch
  1. 9 core/modules/pgsql/src/Driver/Database/pgsql/Connection.php \Drupal\pgsql\Driver\Database\pgsql\Connection::query()
Same name in other branches
  1. 8.9.x core/lib/Drupal/Core/Database/Driver/mysql/Connection.php \Drupal\Core\Database\Driver\mysql\Connection::query()
  2. 8.9.x core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php \Drupal\Core\Database\Driver\pgsql\Connection::query()
  3. 8.9.x core/lib/Drupal/Core/Database/Connection.php \Drupal\Core\Database\Connection::query()
  4. 10 core/modules/pgsql/src/Driver/Database/pgsql/Connection.php \Drupal\pgsql\Driver\Database\pgsql\Connection::query()
  5. 10 core/lib/Drupal/Core/Database/Connection.php \Drupal\Core\Database\Connection::query()
  6. 11.x core/modules/pgsql/src/Driver/Database/pgsql/Connection.php \Drupal\pgsql\Driver\Database\pgsql\Connection::query()
  7. 11.x core/lib/Drupal/Core/Database/Connection.php \Drupal\Core\Database\Connection::query()

Executes a query string against the database.

This method provides a central handler for the actual execution of every query. All queries executed by Drupal are executed as prepared statements.

Parameters

string|\Drupal\Core\Database\StatementInterface|\PDOStatement $query: The query to execute. This is a string containing an SQL query with placeholders. (deprecated) An already-prepared instance of StatementInterface or of \PDOStatement may also be passed in order to allow calling code to manually bind variables to a query. In such cases, the content of the $args array will be ignored. It is extremely rare that module code will need to pass a statement object to this method. It is used primarily for database drivers for databases that require special LOB field handling.

array $args: The associative array of arguments for the prepared statement.

array $options: An associative array of options to control how the query is run. The given options will be merged with self::defaultOptions(). See the documentation for self::defaultOptions() for details. Typically, $options['return'] will be set by a default or by a query builder, and should not be set by a user.

Return value

\Drupal\Core\Database\StatementInterface|int|string|null This method will return one of the following:

  • If either $options['return'] === self::RETURN_STATEMENT, or $options['return'] is not set (due to self::defaultOptions()), returns the executed statement.
  • If $options['return'] === self::RETURN_AFFECTED, returns the number of rows matched by the query (not the number affected).
  • If $options['return'] === self::RETURN_INSERT_ID, returns the generated insert ID of the last query as a string.
  • If $options['return'] === self::RETURN_NULL, returns NULL.

Throws

\Drupal\Core\Database\DatabaseExceptionWrapper

\Drupal\Core\Database\IntegrityConstraintViolationException

\InvalidArgumentException

See also

\Drupal\Core\Database\Connection::defaultOptions()

16 calls to Connection::query()
Connection::attachDatabase in core/modules/sqlite/src/Driver/Database/sqlite/Connection.php
Allows the connection to access additional databases.
Connection::handleQueryException in core/modules/sqlite/src/Driver/Database/sqlite/Connection.php
Wraps and re-throws any PDO exception thrown by static::query().
Connection::hasJson in core/lib/Drupal/Core/Database/Connection.php
Runs a simple query to validate json datatype support.
Connection::nextId in core/modules/mysql/src/Driver/Database/mysql/Connection.php
Retrieves a unique ID from a given sequence.
Connection::nextId in core/modules/sqlite/src/Driver/Database/sqlite/Connection.php
Retrieves a unique ID from a given sequence.

... See full list

1 method overrides Connection::query()
Connection::query in core/modules/pgsql/src/Driver/Database/pgsql/Connection.php
Executes a query string against the database.

File

core/lib/Drupal/Core/Database/Connection.php, line 918

Class

Connection
Base Database API class.

Namespace

Drupal\Core\Database

Code

public function query($query, array $args = [], $options = []) {
    // Use default values if not already set.
    $options += $this->defaultOptions();
    if (isset($options['return'])) {
        @trigger_error('Passing "return" option to ' . __METHOD__ . '() is deprecated in drupal:9.4.0 and is removed in drupal:11.0.0. For data manipulation operations, use dynamic queries instead. See https://www.drupal.org/node/3185520', E_USER_DEPRECATED);
    }
    assert(!isset($options['target']), 'Passing "target" option to query() has no effect. See https://www.drupal.org/node/2993033');
    // We allow either a pre-bound statement object (deprecated) or a literal
    // string. In either case, we want to end up with an executed statement
    // object, which we pass to StatementInterface::execute.
    if (is_string($query)) {
        $this->expandArguments($query, $args);
        $stmt = $this->prepareStatement($query, $options);
    }
    elseif ($query instanceof StatementInterface) {
        @trigger_error('Passing a StatementInterface object as a $query argument to ' . __METHOD__ . ' is deprecated in drupal:9.2.0 and is removed in drupal:10.0.0. Call the execute method from the StatementInterface object directly instead. See https://www.drupal.org/node/3154439', E_USER_DEPRECATED);
        $stmt = $query;
    }
    elseif ($query instanceof \PDOStatement) {
        @trigger_error('Passing a \\PDOStatement object as a $query argument to ' . __METHOD__ . ' is deprecated in drupal:9.2.0 and is removed in drupal:10.0.0. Call the execute method from the StatementInterface object directly instead. See https://www.drupal.org/node/3154439', E_USER_DEPRECATED);
        $stmt = $query;
    }
    try {
        if (is_string($query)) {
            $stmt->execute($args, $options);
        }
        elseif ($query instanceof StatementInterface) {
            $stmt->execute(NULL, $options);
        }
        elseif ($query instanceof \PDOStatement) {
            $stmt->execute();
        }
        // Depending on the type of query we may need to return a different value.
        // See DatabaseConnection::defaultOptions() for a description of each
        // value.
        // @todo the block below is deprecated and as of Drupal 11 will be
        //   removed, query() will only return a StatementInterface object.
        // @see https://www.drupal.org/project/drupal/issues/3256524
        switch ($options['return'] ?? Database::RETURN_STATEMENT) {
            case Database::RETURN_STATEMENT:
                return $stmt;
            // Database::RETURN_AFFECTED should not be used; enable row counting
            // by passing the appropriate argument to the constructor instead.
            // @see https://www.drupal.org/node/3186368
            case Database::RETURN_AFFECTED:
                $stmt->allowRowCount = TRUE;
                return $stmt->rowCount();
            case Database::RETURN_INSERT_ID:
                $sequence_name = $options['sequence_name'] ?? NULL;
                return $this->lastInsertId($sequence_name);
            case Database::RETURN_NULL:
                return NULL;
            default:
                throw new \PDOException('Invalid return directive: ' . $options['return']);
        }
    } catch (\Exception $e) {
        // Most database drivers will return NULL here, but some of them
        // (e.g. the SQLite driver) may need to re-run the query, so the return
        // value will be the same as for static::query().
        if (is_string($query)) {
            return $this->exceptionHandler()
                ->handleExecutionException($e, $stmt, $args, $options);
        }
        else {
            return $this->handleQueryException($e, $query, $args, $options);
        }
    }
}

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