public function DatabaseSchema::tableExists

Check if a table exists.

Parameters

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

Return value

TRUE if the given table exists, otherwise FALSE.

7 calls to DatabaseSchema::tableExists()
DatabaseSchema::createTable in drupal/includes/database/schema.inc
Create a new table from a Drupal table definition.
DatabaseSchema_pgsql::addField in drupal/includes/database/pgsql/schema.inc
Add a new field to a table.
DatabaseSchema_pgsql::addIndex in drupal/includes/database/pgsql/schema.inc
Add an index.
DatabaseSchema_pgsql::addPrimaryKey in drupal/includes/database/pgsql/schema.inc
Add a primary key.
DatabaseSchema_pgsql::addUniqueKey in drupal/includes/database/pgsql/schema.inc
Add a unique key.

... See full list

2 methods override DatabaseSchema::tableExists()
DatabaseSchema_mysql::tableExists in drupal/includes/database/mysql/schema.inc
Check if a table exists.
DatabaseSchema_sqlite::tableExists in drupal/includes/database/sqlite/schema.inc
Check if a table exists.

File

drupal/includes/database/schema.inc, line 316

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();
}