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Diffstat (limited to 'doc/development/migration_style_guide.md')
| -rw-r--r-- | doc/development/migration_style_guide.md | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/doc/development/migration_style_guide.md b/doc/development/migration_style_guide.md index e03b96a0e14..0bd9979e790 100644 --- a/doc/development/migration_style_guide.md +++ b/doc/development/migration_style_guide.md @@ -135,6 +135,7 @@ various database operations, such as: - [dropping and renaming columns](avoiding_downtime_in_migrations.md#dropping-columns) - [changing column constraints and types](avoiding_downtime_in_migrations.md#changing-column-constraints) - [adding and dropping indexes, tables, and foreign keys](avoiding_downtime_in_migrations.md#adding-indexes) +- [migrating `integer` primary keys to `bigint`](avoiding_downtime_in_migrations.md#migrating-integer-primary-keys-to-bigint) and explains how to perform them without requiring downtime. @@ -312,12 +313,8 @@ A better strategy is to split the migration, so that we only need to acquire one ```ruby enable_lock_retries! -def up - remove_column :users, :full_name -end - -def down - add_column :users, :full_name, :string +def change + remove_column :users, :full_name, :string end ``` @@ -587,8 +584,6 @@ class like so: ```ruby class MyMigration < Gitlab::Database::Migration[1.0] - include Gitlab::Database::MigrationHelpers - disable_ddl_transaction! INDEX_NAME = 'index_name' @@ -632,8 +627,6 @@ be used with a name option. For example: ```ruby class MyMigration < Gitlab::Database::Migration[1.0] - include Gitlab::Database::MigrationHelpers - INDEX_NAME = 'index_name' def up |