public function DatabaseSchema::tableExists

1.20.x schema.inc public DatabaseSchema::tableExists($table)

Check if a table exists.

Parameters

$table: The name of the table in Backdrop (no prefixing).

Return value

TRUE if the given table exists, otherwise FALSE.:

2 calls to DatabaseSchema::tableExists()

DatabaseSchema::cloneTable in includes/database/schema.inc: Create an exact duplicate of an existing table, including all content.
DatabaseSchema::createTable in includes/database/schema.inc: Create a new table from a Backdrop table definition.

1 method overrides DatabaseSchema::tableExists()

DatabaseSchema_mysql::tableExists in drivers/database_mysql/schema.inc: Check if a table exists.

File

includes/database/schema.inc, line 319: Generic Database schema code.

Class

DatabaseSchema: Base class for database schema definitions.

Code

public function tableExists($table) {
  $condition = $this->buildTableNameCondition($table);
  $condition->compile($this->connection, $this);
  // Normally, we would heartily discourage the use of string
  // concatenation for conditionals like this however, we
  // couldn't use db_select() here because it would prefix
  // information_schema.tables and the query would fail.
  // Don't use {} around information_schema.tables table.
  return (bool) $this->connection->query("SELECT 1 FROM information_schema.tables WHERE " . (string) $condition, $condition->arguments())->fetchField();
}