public function TableMappingInterface::getExtraColumns in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Entity/Sql/TableMappingInterface.php \Drupal\Core\Entity\Sql\TableMappingInterface::getExtraColumns()

Gets a list of extra database columns, which store denormalized data.

These database columns do not belong to any entity fields. Any normalized data that is stored should be associated with an entity field.

Parameters

string $table_name: The name of the table to return the columns for.

Return value

string[] An array of column names for the given table.

1 method overrides TableMappingInterface::getExtraColumns()

DefaultTableMapping::getExtraColumns in core/lib/Drupal/Core/Entity/Sql/DefaultTableMapping.php

Gets a list of extra database columns, which store denormalized data.

File

core/lib/Drupal/Core/Entity/Sql/TableMappingInterface.php, line 87

Class

TableMappingInterface

Provides a common interface for mapping field columns to SQL tables.

Namespace

Drupal\Core\Entity\Sql

Code

public function getExtraColumns($table_name);