public function DatabaseSchema::tableExists in Drupal 7

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 includes/database/schema.inc

Create a new table from a Drupal table definition.

DatabaseSchema_pgsql::addField in includes/database/pgsql/schema.inc

Add a new field to a table.

DatabaseSchema_pgsql::addIndex in includes/database/pgsql/schema.inc

Add an index.

DatabaseSchema_pgsql::addPrimaryKey in includes/database/pgsql/schema.inc

Add a primary key.

DatabaseSchema_pgsql::addUniqueKey in includes/database/pgsql/schema.inc

Add a unique key.

... See full list

2 methods override DatabaseSchema::tableExists()

DatabaseSchema_mysql::tableExists in includes/database/mysql/schema.inc

Check if a table exists.

DatabaseSchema_sqlite::tableExists in includes/database/sqlite/schema.inc

Check if a table exists.

File

includes/database/schema.inc, line 321

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();
}