block_update_1001 in core/modules/block/block.install
Add a column for title to the block_custom table.
comment_install in core/modules/comment/comment.install
Implements hook_install().
comment_update_1004 in core/modules/comment/comment.install
Add an Override column for automatic comment closing for individual nodes.
file_update_1003 in core/modules/file/file.install
Add a type column to the file_managed table, and add a file_metadata table.
hook_update_N in core/modules/system/system.api.php
Perform a single update.
node_update_1015 in core/modules/node/node.install
Add column for scheduling the publishing of content in the future.
SchemaTestCase::assertFieldAdditionRemoval in core/modules/simpletest/tests/schema.test
Assert that a given field can be added and removed from a table.
SchemaTestCase::testSchema in core/modules/simpletest/tests/schema.test
SchemaTestCase::testUnsignedColumns in core/modules/simpletest/tests/schema.test
Tests creating unsigned columns and data integrity thereof.
system_update_1039 in core/modules/system/system.install
Add the "auto" column to the url_alias table.
system_update_1064 in core/modules/system/system.install
Add langcode column to {menu_links} table.
taxonomy_update_1001 in core/modules/taxonomy/taxonomy.install
Convert taxonomy vocabularies to configuration.
taxonomy_update_1006 in core/modules/taxonomy/taxonomy.install
Add langcode column to {taxonomy_term_data} table.
update_prepare_bootstrap in core/includes/update.inc
Performs extra steps required to bootstrap when using a Drupal 7 database.
user_update_1024 in core/modules/user/user.install
Add a "changed" column to the "users" table.