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* Merge pull request #35891 from Shopify/schema-cache-deduplicationKasper Timm Hansen2019-06-198-2/+105
|\ | | | | Deduplicate various Active Record schema cache structures
| * Deduplicate various Active Record schema cache structuresJean Boussier2019-06-038-2/+105
| | | | | | | | | | | | | | | | | | | | | | | | Real world database schemas contain a lot of duplicated data. Some column names like `id`, `created_at` etc can easily be repeated hundreds of times. Same for SqlTypeMetada, most database will contain only a limited number of possible combinations. This result in a lot of wasted memory. The idea here is to make these data sctructures immutable, use a registry to substitute similar instances with pre-existing ones.
* | Avoid redundant `time.getutc` call if it is already utc time objectRyuta Kamizono2019-06-181-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently `type.serialize` and `connection.{quote|type_cast}` for a time object always does `time.getutc` call regardless of whether it is already utc time object or not, that duplicated proccess (`connection.type_cast(type.serialize(time))`) allocates extra/useless time objects for each type casting. This avoids that redundant `time.getutc` call if it is already utc time object. In the case of a model has timestamps (`created_at` and `updated_at`), it avoids 6,000 time objects allocation for 1,000 times `model.save`. ```ruby ObjectSpace::AllocationTracer.setup(%i{path line type}) pp ObjectSpace::AllocationTracer.trace { 1_000.times { User.create } }.select { |k, _| k[0].end_with?("quoting.rb", "time_value.rb") } ``` Before (c104bfe424e6cebe9c8e85a38515327a6c88b1f8): ``` {["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 203, :T_ARRAY]=>[1004, 0, 778, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 220, :T_STRING]=>[2, 0, 2, 1, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 209, :T_ARRAY]=>[8, 0, 8, 1, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 57, :T_ARRAY]=>[4, 0, 4, 1, 1, 0], ["~/rails/activemodel/lib/active_model/type/helpers/time_value.rb", 17, :T_DATA]=>[4000, 0, 3096, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 120, :T_DATA]=>[2000, 0, 1548, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 126, :T_STRING]=>[4000, 0, 3096, 0, 1, 0]} ``` After (this change): ``` {["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 203, :T_ARRAY]=>[1004, 0, 823, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 220, :T_STRING]=>[2, 0, 2, 1, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 209, :T_ARRAY]=>[8, 0, 8, 1, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 57, :T_ARRAY]=>[4, 0, 4, 1, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb", 126, :T_STRING]=>[2000, 0, 1638, 0, 1, 0]} ```
* | PostgreSQL: Fix GROUP BY with ORDER BY virtual count attributeRyuta Kamizono2019-06-171-10/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | GROUP BY with virtual count attribute is invalid for almost all databases, but it is valid for PostgreSQL, and it had worked until Rails 5.2.2, so it is a regression for Rails 5.2.3 (caused by 311f001). I can't find perfectly solution for fixing this for now, but I would not like to break existing apps, so I decided to allow referencing virtual count attribute in ORDER BY clause when GROUP BY aggrigation (it partly revert the effect of 311f001) to fix the regression #36022. Fixes #36022.
* | Remove unused `Arel::Attributes.for`Ryuta Kamizono2019-06-153-29/+1
| | | | | | | | `Arel::Attributes.for` is no longer used since https://github.com/rails/arel/pull/196.
* | No allocation `Arel::Visitors::ToSql#visit`Ryuta Kamizono2019-06-154-33/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each `visit o, collector` allocates one extra array due to receiving args by splat array. https://github.com/rails/rails/blob/2c3332cc4c0fa77dbe2e13e8a792f80fbd8f4ad3/activerecord/lib/arel/visitors/visitor.rb#L27-L29 Currently 1,000 times `User.where(id: 1).to_sql` allocates 13,000 arrays in `visitor.accept`. This avoids receiving args by splat array, it makes `visitor.accept` no array allocation. ```ruby ObjectSpace::AllocationTracer.setup(%i{path line type}) pp ObjectSpace::AllocationTracer.trace { 1_000.times { User.where(id: 1).to_sql } }.select { |k, _| k[2] == :T_ARRAY && k[0].end_with?("visitor.rb", "to_sql.rb") } ``` Before (2c3332cc4c0fa77dbe2e13e8a792f80fbd8f4ad3): ``` {["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 18, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/determine_if_preparable_visitor.rb", 11, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/visitor.rb", 12, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 788, :T_ARRAY]=>[3000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 794, :T_ARRAY]=>[3000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 156, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 443, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 603, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0], ["~/rails/activerecord/lib/arel/visitors/to_sql.rb", 611, :T_ARRAY]=>[1000, 0, 0, 0, 0, 0]} ``` After (this change): ``` {} ```
* | Move while_preventing_writes from conn to handlereileencodes2019-06-143-17/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we put the `while_preventing_writes` on the connection then the middleware that sends reads to the primary and ensures they can't write will not work. The `while_preventing_writes` will only be applied to the connection which it's called on - which in the case of the middleware is Ar::Base. This worked fine if you called it directly like `OtherDbConn.connection.while_preventing_writes` but Rails didn't have a way of knowing you wanted to call it on all the connections. The change here moves the `while_preventing_writes` method from the connection to the handler so that it can block writes to all queries for that handler. This will apply to all the connections associated with that handler.
* | Merge pull request #36439 from ↵Eileen M. Uchitelle2019-06-146-32/+52
|\ \ | | | | | | | | | | | | eileencodes/move-schema-migration-to-migration-context Move SchemaMigration to migration_context
| * | Move SchemaMigration to migration_contexteileencodes2019-06-146-32/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This PR moves the `schema_migration` to `migration_context` so that we can access the `schema_migration` per connection. This does not change behavior of the SchemaMigration if you are using one database. This also does not change behavior of any public APIs. `Migrator` is private as is `MigrationContext` so we can change these as needed. We now need to pass a `schema_migration` to `Migrator` so that we can run migrations on the right connection outside the context of a rake task. The bugs this fixes were discovered while debugging the issues around the SchemaCache on initialization with multiple database. It was clear that `get_all_versions` wouldn't work without these changes outside the context of a rake task (because in the rake task we establish a connection and change AR::Base.connection to the db we're running on). Because the `SchemaCache` relies on the `SchemaMigration` information we need to make sure we store it per-connection rather than on ActiveRecord::Base. [Eileen M. Uchitelle & Aaron Patterson]
* | | Merge pull request #36484 from ↵Ryuta Kamizono2019-06-141-3/+3
|\ \ \ | |/ / |/| | | | | | | | albertoalmagro/alberto/reverse-column-is-reversible [ci skip] Update docs as `remove_column` can be reversed
| * | [ci skip] Update docs as `remove_column` can be reversedAlberto Almagro2019-06-141-3/+3
| | | | | | | | | | | | | | | As `remove_column` can be reversed when a type is provided this example was not accurate anymore.
* | | Allocation on demand in transactionsRyuta Kamizono2019-06-141-20/+35
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently 1,000 transactions creates 10,000 objects regardless whether it is necessary or not. This makes allocation on demand in transactions, now 1,000 transactions creates required 5,000 objects only by default. ```ruby ObjectSpace::AllocationTracer.setup(%i{path line type}) pp ObjectSpace::AllocationTracer.trace { 1_000.times { User.create } }.select { |k, _| k[0].end_with?("transaction.rb") } ``` Before (95d038f): ``` {["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 209, :T_HASH]=>[1000, 0, 715, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 210, :T_OBJECT]=>[1000, 0, 715, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 210, :T_HASH]=>[1000, 0, 715, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 80, :T_OBJECT]=>[1000, 0, 715, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 8, :T_ARRAY]=>[1000, 0, 715, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 81, :T_ARRAY]=>[1000, 0, 715, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 289, :T_STRING]=>[1000, 0, 714, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 116, :T_ARRAY]=>[1000, 0, 714, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 120, :T_ARRAY]=>[1000, 0, 714, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 121, :T_HASH]=>[1000, 0, 714, 0, 1, 0]} ``` After (this change): ``` {["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 213, :T_HASH]=>[1000, 0, 739, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 214, :T_OBJECT]=>[1000, 0, 739, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 214, :T_HASH]=>[1000, 0, 739, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 81, :T_OBJECT]=>[1000, 0, 739, 0, 1, 0], ["~/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb", 304, :T_STRING]=>[1000, 0, 738, 0, 1, 0]} ```
* | Make ActiveRecord `ConnectionPool.connections` thread-safe. (#36473)jeffdoering2019-06-131-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Make ActiveRecord `ConnectionPool.connections` thread-safe. ConnectionPool documentation is clear on the need to synchronize access to @connections but also states that public methods do not require synchronization. Existing code exposed @connections directly via attr_reader. The fix uses synchronize() to lock @connections then returns a copy to the caller using Array.dup(). Includes comments on the connections method that thread-safe access to the connections array does not imply thread-safety of accessing methods on the actual connections. Adds a test-case that modifies the pool using a supported method in one thread while a second thread accesses pool.connections. The test fails without this patch. Fixes #36465. * Update activerecord/test/cases/connection_pool_test.rb [jeffdoering + Rafael Mendonça França]
* | Merge pull request #36472 from kamipo/empty_line_only_before_access_modifierRyuta Kamizono2019-06-13100-122/+0
|\ \ | | | | | | Enable `Layout/EmptyLinesAroundAccessModifier` cop
| * | Enable `Layout/EmptyLinesAroundAccessModifier` copRyuta Kamizono2019-06-13100-122/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We sometimes say "✂️ newline after `private`" in a code review (e.g. https://github.com/rails/rails/pull/18546#discussion_r23188776, https://github.com/rails/rails/pull/34832#discussion_r244847195). Now `Layout/EmptyLinesAroundAccessModifier` cop have new enforced style `EnforcedStyle: only_before` (https://github.com/rubocop-hq/rubocop/pull/7059). That cop and enforced style will reduce the our code review cost.
* | | Remove duplicated `table_exists?`Ryuta Kamizono2019-06-132-8/+0
| | | | | | | | | | | | | | | | | | `table_exists?` is already exist in `ModelSchema`. https://github.com/rails/rails/blob/5cab344494c340ea82a35b46efa06b94f0b7730b/activerecord/lib/active_record/model_schema.rb#L339-L341
* | | Clear schema cache when a table is created/dropped/renamedRyuta Kamizono2019-06-134-0/+11
|/ / | | | | | | Otherwise `Model.table_exists?` returns the staled cache result.
* | Merge pull request #36440 from malept/multi-db-abort_if_pending_migrations-taskEileen M. Uchitelle2019-06-111-1/+25
|\ \ | | | | | | Add support for multiple databases to `rails db:abort_if_pending_migrations`
| * | Convert the db:abort_if_pending_migrations task to be multi-DB awareMark Lee2019-06-101-1/+25
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* | | Allow column name with function (e.g. `length(title)`) as safe SQL stringRyuta Kamizono2019-06-104-8/+32
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, almost all "Dangerous query method" warnings are false alarm. As long as almost all the warnings are false alarm, developers think "Let's ignore the warnings by using `Arel.sql()`, it actually is false alarm in practice.", so I think we should effort to reduce false alarm in order to make the warnings valuable. This allows column name with function (e.g. `length(title)`) as safe SQL string, which is very common false alarm pattern, even in the our codebase. Related 6c82b6c99, 6607ecb2a, #36420. Fixes #32995.
* | Allow `column_name AS alias` as safe SQL stringRyuta Kamizono2019-06-104-0/+4
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* | Refactor `disallow_raw_sql!` to avoid `split(/\s*,\s*/)` to order argsRyuta Kamizono2019-06-096-21/+56
| | | | | | | | | | `split(/\s*,\s*/)` to order args and then `permit.match?` one by one is much slower than `permit.match?` once.
* | Add forgotten nodoc to dump_schema method.Wojciech Wnętrzak2019-06-071-1/+1
| | | | | | | | Method added in https://github.com/rails/rails/pull/36416
* | Merge pull request #36429 from bogdan/fix-preloading-duplicate-recordsRyuta Kamizono2019-06-071-1/+3
|\ \ | | | | | | Fix preloading on AR::Relation where records are duplicated by a join
| * | Fix preloading on AR::Relation where records are duplicated by a joinBogdan Gusiev2019-06-061-1/+3
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* | | Merge pull request #36420 from kamipo/quoted_identifier_regexRyuta Kamizono2019-06-067-61/+137
|\ \ \ | | | | | | | | Allow quoted identifier string as safe SQL string
| * | | Allow quoted identifier string as safe SQL stringRyuta Kamizono2019-06-067-61/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently `posts.title` is regarded as a safe SQL string, but `"posts"."title"` (it is a result of `quote_table_name("posts.title")`) is regarded as an unsafe SQL string even though a result of `quote_table_name` should obviously be regarded as a safe SQL string, since the column name matcher doesn't respect quotation, it is a little annoying. This changes the column name matcher to allow quoted identifiers as safe SQL string, now all results of the `quote_table_name` are regarded as safe SQL string.
* | | | Move schema cache from connection to pooleileencodes2019-06-055-6/+33
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This PR proposes moving the schema cache from the connection to the pool so the connection can ask the pool for the cache. In a future PR our goal is to be able to read the yaml file from the pool so we can get rid of the `active_record.check_schema_cache_dump` initializer. This will fix the issues surrounding dumping the schema cache and mulitple databases. Why do we want to get rid of the initializer you ask? Well I was looking at #34449 and trying to make it work for our usecase and it revealed A LOT of problems. There are a few issues that I will fix in remaining PRs with SchemaMigration, but there's a big glaring issue with this initializer. When you have an application with multiple databases we'll need to loop through all the configurations and set the schema cache on those connections. The problem is on initialization we only have one connection - the one for Ar::Base. This is fine in a single db application but not fine in multi-db. If we follow the pattern in #34449 and establish a connection to those other dbs we will end up setting the cache on the _connection object_ rather than on all connections that connect for that config. So even though we looped through the configs and assigned the cache the cache will not be set (or will be set wrong) once the app is booted because the connection objects after boot are _different_ than the connection objects we assigned the cache to. After trying many different ways to set the schema cache `@tenderlove` and I came to the conclusion that the initializer is problematic, as is setting the schema cache twice. This is part 1 to move the cache to the pool so the cache can read from the schema cache yaml file instead of setting it when initializing the app. To do this we have created a `NullPool` that initializes an empty cache. I put the `get_schema_cache` and `set_schema_cache` in an `AbstractPool` so we can share code between `ConnectionPool` and `NullPool` instead of duplicating code. Now we only need to set the schema_cache on the pool rather than the connection. In `discard!` we need to unset the connection from the schema_cache - we still want the cache just not the connection.
* | | Merge pull request #36416 from freeletics/fix-db-prepareEileen M. Uchitelle2019-06-052-19/+49
|\ \ \ | | | | | | | | Fixed db:prepare task for multiple databases.
| * | | Fixed db:prepare task for multiple databases.Wojciech Wnętrzak2019-06-052-19/+49
| | | | | | | | | | | | | | | | | | | | When one database existed already, but not the other, during setup of missing one, existing database was wiped out.
* | | | Merge pull request #36394 from eileencodes/treat-application-record-as-primaryEileen M. Uchitelle2019-06-051-2/+6
|\ \ \ \ | |/ / / |/| | | Treat ActiveRecord::Base and ApplicationRecord as "primary"
| * | | Treat ActiveRecord::Base and ApplicationRecord as "primary"eileencodes2019-06-051-2/+6
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When someone has a multi-db application their `ApplicationRecord` will look like: ```ruby class ApplicationRecord < ActiveRecord::Base self.abstract_class = true connects_to database: { writing: :primary, reading: :replica } end ``` This will cause us to open 2 connections to ActiveRecord::Base's database when we actually only want 1. This is because Rails sees `ApplicationRecord` and thinks it's a new connection, not the existing `ActiveRecord::Base` connection because the `connection_specification_name` is different. This PR changes `ApplicationRecord` classes to consider themselves the same as the "primary" connection. Fixes #36382
* / / Fix sqlite3 collation parsing when using decimal columns.Martin Schuster2019-06-041-2/+2
|/ / | | | | | | | | | | If an sqlite3 table contains a decimal column behind columns with a collation definition, then parsing the collation of all preceeding columns will fail -- the collation will be missed without notice.
* | Merge pull request #36384 from ↵Ryuta Kamizono2019-06-031-1/+1
|\ \ | |/ |/| | | | | guigs/fix-invalid-schema-when-pk-column-has-comment Fix invalid schema dump when primary key column has a comment
| * Fix invalid schema dump when primary key column has a commentGuilherme Goettems Schneider2019-06-031-1/+1
| | | | | | | | | | | | | | | | Before this fix it would either generate an invalid schema, passing `comment` option twice to `create_table`, or it move the comment from primary key column to the table if table had no comment when the dump was generated. The situation now is that a comment on primary key will be ignored (not present on schema). Fixes #29966
* | Refactor `create_table`'s options separationRyuta Kamizono2019-06-032-12/+11
| | | | | | | | | | | | | | | | `create_table` and `t.column` have the same named options (e.g. `:comment`, `:primary_key`), so it should be separated table options from column options. Related #36373.
* | Avoid making extra 5 arrays in each `save`Ryuta Kamizono2019-06-011-16/+26
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each `save` calls `all_timestamp_attributes_in_model` to fill timestamp columns. Allthough the `all_timestamp_attributes_in_model` returns the same value every time, the `all_timestamp_attributes_in_model` makes extra 5 arrays every time. This avoids the making extra 5 arrays by memoizing the result, it makes `save` economical and a bit faster. https://gist.github.com/kamipo/1ddad2235073f508637bf9a72d64bb83 Before (2a015f6c0be0593a624b0c800e5335319ac4c660): ``` {["~/rails/activerecord/lib/active_record/timestamp.rb", 76, :T_ARRAY]=>[1000, 0, 341, 0, 1, 13640], ["~/rails/activerecord/lib/active_record/timestamp.rb", 64, :T_ARRAY]=>[1000, 0, 341, 0, 1, 13640], ["~/rails/activerecord/lib/active_record/timestamp.rb", 80, :T_ARRAY]=>[1000, 0, 341, 0, 1, 13640], ["~/rails/activerecord/lib/active_record/timestamp.rb", 68, :T_ARRAY]=>[1000, 0, 341, 0, 1, 13640], ["~/rails/activerecord/lib/active_record/timestamp.rb", 73, :T_ARRAY]=>[1000, 0, 341, 0, 1, 13640]} Warming up -------------------------------------- User.create * 10 36.000 i/100ms Calculating ------------------------------------- User.create * 10 353.644 (± 7.4%) i/s - 1.764k in 5.021876s ``` After (this change): ``` {["~/rails/activerecord/lib/active_record/timestamp.rb", 83, :T_ARRAY]=>[1, 0, 1, 1, 1, 40], ["~/rails/activerecord/lib/active_record/timestamp.rb", 87, :T_ARRAY]=>[1, 0, 1, 1, 1, 40], ["~/rails/activerecord/lib/active_record/timestamp.rb", 64, :T_ARRAY]=>[1, 1, 1, 1, 1, 0], ["~/rails/activerecord/lib/active_record/timestamp.rb", 69, :T_ARRAY]=>[1, 1, 1, 1, 1, 0], ["~/rails/activerecord/lib/active_record/timestamp.rb", 74, :T_ARRAY]=>[1, 1, 1, 1, 1, 0]} Warming up -------------------------------------- User.create * 10 37.000 i/100ms Calculating ------------------------------------- User.create * 10 380.063 (± 7.1%) i/s - 1.924k in 5.097917s ```
* Fix table comment also being applied to the primary key columnGuilherme Goettems Schneider2019-05-311-1/+1
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* Remove wrong default value for `cache_versioning` in documentation of ↵Sebastian Röder2019-05-291-1/+1
| | | | | `cache_version` `ActiveRecord::Base.cache_versioning` it `true` by default since Rails 5.2 as stated correctly in the documentation for the `ActiveRecord::Base.cache_versioning` class attribute. Remove the wrong and duplicated documentation of the default value for `cache_versioning` from `cache_version`.
* `:datetime` and `:time` columns allows `:precision` option [ci skip]Ryuta Kamizono2019-05-281-2/+3
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* Merge pull request #36350 from kamipo/fast_pluckRyuta Kamizono2019-05-281-3/+5
|\ | | | | Allow symbol (i.e. quoted identifier) as safe SQL string
| * Allow symbol (i.e. quoted identifier) as safe SQL stringRyuta Kamizono2019-05-281-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `pluck(:id)` / `order(:id)` are very common use case, and passed symbol (i.e. quoted identifier) is obviously safe argument, but `:id.to_s.split(/\s*,\s*/).all? { |part| permit.match?(part) }` is useless and a bit expensive operation for each such safe symbols (will make extra 2 mutable strings, 1 array, 1 proc). This avoids the expensive operation to such safe symbols, it makes `pluck(:id)` / `order(:id)` itself about 9% faster. https://gist.github.com/kamipo/11d428b57f3629a72ae89c6f21721326 Before (93e640735e9363672b770b8d1c5a35f9e464f806): ``` Warming up -------------------------------------- users.pluck(:id) 1.217k i/100ms users.order(:id).to_sql 1.848k i/100ms Calculating ------------------------------------- users.pluck(:id) 12.239k (± 8.2%) i/s - 60.850k in 5.013839s users.order(:id).to_sql 19.111k (± 7.5%) i/s - 96.096k in 5.064450s ``` After (this change): ``` Warming up -------------------------------------- users.pluck(:id) 1.293k i/100ms users.order(:id).to_sql 2.036k i/100ms Calculating ------------------------------------- users.pluck(:id) 13.257k (± 6.9%) i/s - 65.943k in 5.002568s users.order(:id).to_sql 20.957k (± 7.6%) i/s - 105.872k in 5.086102s ```
* | Use WeakRef to avoid leaking connection poolsJohn Hawthorn2019-05-271-11/+21
|/ | | | | | | | | | | | | | | | | | Prior to 3e2e8eeb9ea552bd4782538cf9348455f3d0e14a the Reaper thread would hold a reference to connection pools indefinitely, preventing the connection pool from being garbage collected, and also leaking the Thread. Since 3e2e8eeb9ea552bd4782538cf9348455f3d0e14a, there is only one Reaper Thread for all pools, however all pools are still stored in a class variable, preventing them from being garbage collected. This commit instead holds reference to the pools through a WeakRef. This way, connection pools referenced elsewhere will be reaped, any others will be able to be garbage collected. I don't love resorting to WeakRef to solve this, but I believe it's the simplest way to accomplish the the desired behaviour.
* Extract `readonly_attribute?`Ryuta Kamizono2019-05-273-6/+6
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* Merge pull request #36320 from XrXr/no-doc-prependRafael França2019-05-211-1/+1
|\ | | | | [CI skip] Put :nodoc: on method that raises NoMethodError
| * Put :nodoc: on method that raises NoMethodErrorAlan Wu2019-05-211-1/+1
| | | | | | | | | | This method is not intended to be used so I think we should remove it from the docs.
* | Put all `explain` methods into `DatabaseStatements` moduleRyuta Kamizono2019-05-224-18/+14
| | | | | | | | | | Almost all database statements methods except `explain` was moved into `DatabaseStatements` at #35922. This moves the last one method.
* | Fall back to type casting from the connection adapterRyuta Kamizono2019-05-212-20/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unfortunately, a11a8ff had no effect as long as using bind param, and was not tested. This ensures making the intent of a11a8ff, which fall back to type casting from the connection adapter. Fixes #35205. ``` % ARCONN=postgresql bundle exec ruby -w -Itest test/cases/relation/where_test.rb -n test_type_casting_nested_joins Using postgresql Run options: -n test_type_casting_nested_joins --seed 55730 # Running: E Error: ActiveRecord::WhereTest#test_type_casting_nested_joins: ActiveRecord::StatementInvalid: PG::InvalidTextRepresentation: ERROR: invalid input syntax for integer: "2-foo" rails test test/cases/relation/where_test.rb:30 Finished in 0.245778s, 4.0687 runs/s, 0.0000 assertions/s. 1 runs, 0 assertions, 0 failures, 1 errors, 0 skips ```
* | Implicit through table joins should be appeared before user supplied joinsRyuta Kamizono2019-05-191-17/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | #36293 was an issue for through association with `joins` for a long time, but since #35864 through association with `left_joins` would also be affected by the issue. Implicit through table joins should be appeared before user supplied joins, otherwise loading through association with joins will cause a statement invalid error. Fixes #36293. ``` % ARCONN=postgresql bundle exec ruby -w -Itest test/cases/associations/has_many_through_associations_test .rb -n test_through_association_with_joins Using postgresql Run options: -n test_through_association_with_joins --seed 7116 # Running: E Error: HasManyThroughAssociationsTest#test_through_association_with_joins: ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR: missing FROM-clause entry for table "posts" LINE 1: ... "comments_posts" ON "comments_posts"."post_id" = "posts"."i... ^ : SELECT "comments".* FROM "comments" INNER JOIN "comments" "comments_posts" ON "comments_posts"."post_id" = "posts"."id" INNER JOIN "posts" ON "comments"."post_id" = "posts"."id" WHERE "posts"."author_id" = $1 rails test test/cases/associations/has_many_through_associations_test.rb:61 Finished in 0.388657s, 2.5730 runs/s, 0.0000 assertions/s. 1 runs, 0 assertions, 0 failures, 1 errors, 0 skips ```
* | Merge pull request #36296 from jhawthorn/dont_fear_the_reaperAaron Patterson2019-05-181-7/+25
|\ \ | | | | | | Use a single thread for all ConnectionPool Reapers
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