6 calls to db_field_exists() in Drupal 7

DatabaseRegressionTestCase::testDBFieldExists in modules/simpletest/tests/database_test.test

Test the db_field_exists() function.

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.

SchemaTestCase::testUnsignedColumns in modules/simpletest/tests/schema.test

Tests creating unsigned columns and data integrity thereof.

user_update_7002 in modules/user/user.install

Convert user time zones from time zone offsets to time zone names.

user_update_7006 in modules/user/user.install

Add module data to {role_permission}.

user_update_7012 in modules/user/user.install

Add the user's pictures to the {file_managed} table and make them managed files.