diff --git a/includes/database/database.inc b/includes/database/database.inc
index 2ca7747ac960ca4b7948939aafeb3653967967d0..4f97afd40d4b13cae351e013ef3607d91e7dadc5 100644
--- a/includes/database/database.inc
+++ b/includes/database/database.inc
@@ -295,6 +295,13 @@ abstract class DatabaseConnection extends PDO {
*/
protected $transactionalDDLSupport = FALSE;
+ /**
+ * An index used to generate unique temporary table names.
+ *
+ * @var integer
+ */
+ protected $temporaryNameIndex = 0;
+
/**
* The schema object for this connection.
*
@@ -909,6 +916,16 @@ public function popTransaction() {
*/
abstract public function queryRange($query, array $args, $from, $count, array $options = array());
+ /**
+ * Generate a temporary table name.
+ *
+ * @return
+ * A table name.
+ */
+ protected function generateTemporaryTableName() {
+ return "db_temporary_" . $this->temporaryNameIndex++;
+ }
+
/**
* Runs a SELECT query and stores its results in a temporary table.
*
@@ -925,17 +942,13 @@ abstract public function queryRange($query, array $args, $from, $count, array $o
* A string containing a normal SELECT SQL query.
* @param $args
* An array of values to substitute into the query at placeholder markers.
- * @param $tablename
- * The name of the temporary table to select into. This name will not be
- * prefixed as there is no risk of collision.
* @param $options
* An associative array of options to control how the query is run. See
* the documentation for DatabaseConnection::defaultOptions() for details.
* @return
- * A database query result resource, or FALSE if the query was not executed
- * correctly.
+ * The name of the temporary table.
*/
- abstract function queryTemporary($query, array $args, $tablename, array $options = array());
+ abstract function queryTemporary($query, array $args, array $options = array());
/**
* Returns the type of database driver.
@@ -1788,20 +1801,19 @@ function db_query_range($query, $args, $from = 0, $count = 0, $options = array()
* placeholders, this is an associative array in any order. If the query uses
* unnamed placeholders (?), this is an indexed array and the order must match
* the order of placeholders in the query string.
- * @param $tablename
- * The name of the temporary table to select into. This name will not be
- * prefixed as there is no risk of collision.
* @param $options
* An array of options to control how the query operates.
+ * @return
+ * The name of the temporary table.
*/
-function db_query_temporary($query, $args, $tablename, $options = array()) {
+function db_query_temporary($query, $args, $options = array()) {
if (!is_array($args)) {
$args = func_get_args();
array_shift($args);
}
list($query, $args, $options) = _db_query_process_args($query, $args, $options);
- return Database::getActiveConnection($options['target'])->queryTemporary($query, $args, $tablename, $options);
+ return Database::getActiveConnection($options['target'])->queryTemporary($query, $args, $options);
}
/**
diff --git a/includes/database/mysql/database.inc b/includes/database/mysql/database.inc
index b03c03ca3e3531da8df75a5ab17b0cf0089e7512..281bcfa0927a82b392120c768ed8c279fbf00567 100644
--- a/includes/database/mysql/database.inc
+++ b/includes/database/mysql/database.inc
@@ -50,8 +50,10 @@ public function queryRange($query, array $args, $from, $count, array $options =
return $this->query($query . ' LIMIT ' . $from . ', ' . $count, $args, $options);
}
- public function queryTemporary($query, array $args, $tablename, array $options = array()) {
- return $this->query(preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE ' . $tablename . ' Engine=MEMORY SELECT', $query), $args, $options);
+ public function queryTemporary($query, array $args, array $options = array()) {
+ $tablename = $this->generateTemporaryTableName();
+ $this->query(preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE {' . $tablename . '} Engine=MEMORY SELECT', $query), $args, $options);
+ return $tablename;
}
public function driver() {
diff --git a/includes/database/pgsql/database.inc b/includes/database/pgsql/database.inc
index 4778450536249af8074c821390487445bff128a6..6e39bb23275d56046a6853681c1f38a78ce0b715 100644
--- a/includes/database/pgsql/database.inc
+++ b/includes/database/pgsql/database.inc
@@ -82,8 +82,10 @@ public function queryRange($query, array $args, $from, $count, array $options =
return $this->query($query . ' LIMIT ' . $count . ' OFFSET ' . $from, $args, $options);
}
- public function queryTemporary($query, array $args, $tablename, array $options = array()) {
- return $this->query(preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE ' . $tablename . ' AS SELECT', $query), $args, $options);
+ public function queryTemporary($query, array $args, array $options = array()) {
+ $tablename = $this->generateTemporaryTableName();
+ $this->query(preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE {' . $tablename . '} AS SELECT', $query), $args, $options);
+ return $tablename;
}
public function driver() {
diff --git a/includes/database/sqlite/database.inc b/includes/database/sqlite/database.inc
index e62ed5d1b8c829527138b584f18a38a35a7a30bc..bf0c1625e9bb8dc1b51ed1320f1ac5404d4e4484 100644
--- a/includes/database/sqlite/database.inc
+++ b/includes/database/sqlite/database.inc
@@ -123,8 +123,10 @@ public function queryRange($query, array $args, $from, $count, array $options =
return $this->query($query . ' LIMIT ' . $from . ', ' . $count, $args, $options);
}
- public function queryTemporary($query, array $args, $tablename, array $options = array()) {
- return $this->query(preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE ' . $tablename . ' AS SELECT', $query), $args, $options);
+ public function queryTemporary($query, array $args, array $options = array()) {
+ $tablename = $this->generateTemporaryTableName();
+ $this->query(preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE {' . $tablename . '} AS SELECT', $query), $args, $options);
+ return $tablename;
}
public function driver() {
diff --git a/modules/simpletest/tests/database_test.module b/modules/simpletest/tests/database_test.module
index 25631e0c77928e083c824c50367ceb915f432d98..573075078ffed1fd8dd4e8d596eede1f61b28330 100644
--- a/modules/simpletest/tests/database_test.module
+++ b/modules/simpletest/tests/database_test.module
@@ -44,7 +44,7 @@ function database_test_query_database_test_alter_remove_range_alter(QueryAlterab
* Implementation of hook_menu().
*/
function database_test_menu() {
- $items['database_test_db_query_temporary'] = array(
+ $items['database_test/db_query_temporary'] = array(
'access callback' => TRUE,
'page callback' => 'database_test_db_query_temporary',
);
@@ -52,15 +52,17 @@ function database_test_menu() {
}
/**
- * Run a db_query_temporary and print the number of rows in the resulting table.
+ * Run a db_query_temporary and output the table name and its number of rows.
*
* We need to test that the table created is temporary, so we run it here, in a
* separate menu callback request; After this request is done, the temporary
* table should automatically dropped.
*/
function database_test_db_query_temporary() {
- db_query_temporary('SELECT status FROM {system}', array(), 'temporary');
- print db_query('SELECT COUNT(*) FROM temporary')->fetchField();
+ $table_name = db_query_temporary('SELECT status FROM {system}', array());
+ drupal_json(array(
+ 'table_name' => $table_name,
+ 'row_count' => db_select($table_name)->countQuery()->execute()->fetchField(),
+ ));
exit;
}
-
diff --git a/modules/simpletest/tests/database_test.test b/modules/simpletest/tests/database_test.test
index 5df638346ae4568cefde675ffbaf13bb287f5348..8451f83f1e8f4d73de9a93bfd7b50a73e6299660 100644
--- a/modules/simpletest/tests/database_test.test
+++ b/modules/simpletest/tests/database_test.test
@@ -1933,13 +1933,33 @@ class DatabaseTemporaryQueryTestCase extends DrupalWebTestCase {
parent::setUp('database_test');
}
+ /**
+ * Return the number of rows of a table.
+ */
+ function countTableRows($table_name) {
+ return db_select($table_name)->countQuery()->execute()->fetchField();
+ }
+
/**
* Confirm that temporary tables work and are limited to one request.
*/
function testTemporaryQuery() {
- $this->drupalGet('database_test_db_query_temporary');
- $this->assertEqual(db_query('SELECT COUNT(*) FROM {system}')->fetchField(), $this->drupalGetContent(), t('The temporary table exists and contains the correct amount of rows.'));
- $this->assertFalse(db_table_exists('temporary'), t('The temporary table is, indeed, temporary.'));
+ $this->drupalGet('database_test/db_query_temporary');
+ $data = json_decode($this->drupalGetContent());
+ if ($data) {
+ $this->assertEqual($this->countTableRows("system"), $data->row_count, t('The temporary table contains the correct amount of rows.'));
+ $this->assertFalse(db_table_exists($data->table_name), t('The temporary table is, indeed, temporary.'));
+ }
+ else {
+ $this->fail(t("The creation of the temporary table failed."));
+ }
+
+ // Now try to run two db_query_temporary() in the same request.
+ $table_name_system = db_query_temporary('SELECT status FROM {system}', array());
+ $table_name_users = db_query_temporary('SELECT uid FROM {users}', array());
+
+ $this->assertEqual($this->countTableRows($table_name_system), $this->countTableRows("system"), t('A temporary table was created successfully in this request.'));
+ $this->assertEqual($this->countTableRows($table_name_users), $this->countTableRows("users"), t('A second temporary table was created successfully in this request.'));
}
}