Checks if an index exists in the given table.

Parameters

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

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

Return value

TRUE if the given index exists, otherwise FALSE.

Overrides Schema::indexExists

2 calls to Schema::indexExists()

Schema::addIndex in core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php

Add an index.

Schema::dropIndex in core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php

Drop an index.

File

core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php, line 740

Class

Schema

PostgreSQL implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\Core\Database\Driver\pgsql

Code

public function indexExists($table, $name) {
  // Details http://www.postgresql.org/docs/9.1/interactive/view-pg-indexes.html
  $index_name = $this->ensureIdentifiersLength($table, $name, 'idx');
  // Remove leading and trailing quotes because the index name is in a WHERE
  // clause and not used as an identifier.
  $index_name = str_replace('"', '', $index_name);
  return (bool) $this->connection
    ->query("SELECT 1 FROM pg_indexes WHERE indexname = '{$index_name}'")
    ->fetchField();
}

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