function Schema::getComment

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

Retrieve a table or column comment.

File

core/modules/mysql/src/Driver/Database/mysql/Schema.php, line 670

Class

Schema
MySQL implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\mysql\Driver\Database\mysql

Code

public function getComment($table, $column = NULL) {
    $condition = $this->buildTableNameCondition($table);
    if (isset($column)) {
        $condition->condition('column_name', $column);
        $condition->compile($this->connection, $this);
        // Don't use {} around information_schema.columns table.
        return $this->connection
            ->query("SELECT column_comment AS column_comment FROM information_schema.columns WHERE " . (string) $condition, $condition->arguments())
            ->fetchField();
    }
    $condition->compile($this->connection, $this);
    // Don't use {} around information_schema.tables table.
    $comment = $this->connection
        ->query("SELECT table_comment AS table_comment FROM information_schema.tables WHERE " . (string) $condition, $condition->arguments())
        ->fetchField();
    // Work-around for MySQL 5.0 bug http://bugs.mysql.com/bug.php?id=11379
    return preg_replace('/; InnoDB free:.*$/', '', $comment);
}

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