EntityFieldQueryTestCase::testEntityFieldQuery in core/modules/entity/tests/entity_query.test

Tests EntityFieldQuery.

FieldAttachStorageTestCase::testFieldStorageDetailsAlter in core/modules/field/tests/field.test

Test storage details alteration.

FieldSqlStorageTestCase::testFieldStorageDetails in core/modules/field/modules/field_sql_storage/tests/field_sql_storage.test

Test the storage details.

field_attach_load_revision in core/modules/field/field.attach.inc

Load all fields for previous versions of a group of entities.

field_has_data in core/modules/field/field.module

Determine whether a field has any data.

field_sql_storage_field_storage_details in core/modules/field/modules/field_sql_storage/field_sql_storage.module

Implements hook_field_storage_details().

field_test_field_storage_details_alter in core/modules/field/tests/field_test/field_test.storage.inc

Implements hook_field_storage_details_alter().

field_views_field_default_views_data in core/modules/field/views/field.views.inc

Default views data implementation for a field.

file_get_file_references in core/modules/file/file.module

Retrieves a list of references to a file.

hook_field_storage_details in core/modules/field/field.api.php

Reveal the internal details about the storage for a field.

hook_field_storage_details_alter in core/modules/field/field.api.php

Perform alterations on Field API storage details.

node_type_has_content in core/modules/node/node.module

Determine whether a node type has any data.

_date_views_fields in core/modules/date/views/date_views_fields.inc

Identify all potential date/timestamp fields.