function db_drop_index in Drupal 8

Same name and namespace in other branches

1. 6 includes/database.mysql-common.inc \db_drop_index()
2. 6 includes/database.pgsql.inc \db_drop_index()
3. 7 includes/database/database.inc \db_drop_index()

Drops an index.

Parameters

$table: The table to be altered.

$name: The name of the index.

Return value

bool TRUE if the index was successfully dropped, FALSE if there was no index by that name to begin with.

See also

https://www.drupal.org/node/2993033

\Drupal\Core\Database\Schema::dropIndex()

Related topics

1 call to db_drop_index()

DatabaseLegacyTest::testDbDropIndex in core/tests/Drupal/KernelTests/Core/Database/DatabaseLegacyTest.php

Tests deprecation of the db_drop_index() function.

File

core/includes/database.inc, line 1043

Core systems for the database layer.

Code

function db_drop_index($table, $name) {
  @trigger_error('db_drop_index() is deprecated in drupal:8.0.0. It will be removed from drupal:9.0.0. Instead, get a database connection injected into your service from the container, get its schema driver, and call dropIndex() on it. For example, $injected_database->schema()->dropIndex($table, $name). See https://www.drupal.org/node/2993033', E_USER_DEPRECATED);
  return Database::getConnection()
    ->schema()
    ->dropIndex($table, $name);
}