19 calls to db_drop_field()

block_update_7008 in modules/block/block.install
Update database to match Drupal 7 schema.
comment_update_7006 in modules/comment/comment.install
Migrate data from the comment field to field storage.
field_sql_storage_update_7001 in modules/field/modules/field_sql_storage/field_sql_storage.install
Remove the field_config_entity_type table and store 'entity_type' strings.
filter_update_7005 in modules/filter/filter.install
Integrate text formats with the user permissions system.
node_update_7006 in modules/node/node.install
Convert body and teaser from node properties to fields, and migrate status/comment/promote and sticky columns to the {node_revision} table.
node_update_7007 in modules/node/node.install
Remove column min_word_count.
node_update_7011 in modules/node/node.install
Update the database from Drupal 6 to match the schema.
poll_update_7001 in modules/poll/poll.install
Use the poll_choice primary key to record votes in poll_votes rather than the choice order. Rename chorder to weight.
SchemaTestCase::assertFieldAdditionRemoval in modules/simpletest/tests/schema.test
Assert that a given field can be added and removed from a table.
SchemaTestCase::assertFieldCharacteristics in modules/simpletest/tests/schema.test
Assert that a newly added field has the correct characteristics.
system_update_7005 in modules/system/system.install
Remove throttle columns and variables.
system_update_7042 in modules/system/system.install
Upgrade the {url_alias} table and create a cache bin for path aliases.
system_update_7064 in modules/system/system.install
Remove block_callback field from {menu_router}.
taxonomy_update_7003 in modules/taxonomy/taxonomy.install
Remove the related terms setting from vocabularies.
taxonomy_update_7004 in modules/taxonomy/taxonomy.install
Move taxonomy vocabulary associations for nodes to fields and field instances.
trigger_update_7000 in modules/trigger/trigger.install
Alter the "hook" field and drop the "op field" of {trigger_assignments}.
UpgradePathTestCase::prepareD7Session in modules/simpletest/tests/upgrade/upgrade.test
Prepares the appropriate session for the release of Drupal being upgraded.
user_update_7001 in modules/user/user.install
Remove the 'threshold', 'mode' and 'sort' columns from the {users} table.
user_update_7012 in modules/user/user.install
Add the user's pictures to the {file_managed} table and make them managed files.

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