| Commit message (Collapse) | Author | Age | Files | Lines |
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Move `explain` into `AbstractMysqlAdapter`
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Common methods in both mysql adapters are should be added to
`AbstractMysqlAdapter`, but some methods had been added to
`Mysql2Adapter`. (8744632f, 0306f82e, #14359)
Some methods already moved from `Mysql2Adapter` to
`AbstractMysqlAdapter`. (#17601, #17998)
Common methods in both mysql adapters are remaining only the `explain`
method in `Mysql2Adapter`.
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`@connection` in `StatementPool` is only used for PG adapter.
No need for abstract `StatementPool` class.
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skip]
Bumps from `5.6` to `5.7`
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Also added reference for to_date, as it belongs historically.
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The cause by which the test suite for the mysql adapter broke in 1502cae
(reverted 89ba5bb) is because the precision was not extracted.
The rounding problem in mysql adapter has not been fixed, but `mysql_56`
helper tested only mysql2 adapter, its behavior was not apparent.
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`bound_attributes` is now used universally across the board, removing
the need for the conversion layer. These changes are mostly mechanical,
with the exception of the log subscriber. Additional, we had to
implement `hash` on the attribute objects, so they could be used as a
key for query caching.
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Some comments that are meant to separate blocks of code in a file show up
on http://api.rubyonrails.org as though they were part of the documentation.
This commit hides those comments from the documentation.
Stems from the discussion with @zzak at https://github.com/voloko/sdoc/issues/79#issuecomment-64158738
[ci skip]
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I grepped the source code for code snippets wrapped in backticks in the comments
and replaced the backticks with plus signs so they are correctly displayed in
the Rails documentation.
[ci skip]
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The `select` method has the same definition in almost all database
adapters, so it can be moved from the database-specific adapters
(PostgreSQl, MySQL, SQLite) to the abstract `database_statement`:
```ruby
def select(sql, name = nil, binds = [])
exec_query(sql, name, binds)
end
```
---
More details about this commit: the only two DB-specific adapters
that have a different definition of `select` are MySQLAdapter and
MySQL2Adapter.
In MySQLAdapter, `select` invokes `exec_query(sql, name, binds)`, so
calling `super` achieves the same goal with less repetition.
In MySQL2Adapter, `select` invokes `exec_query(sql, name)`, that is,
it does not pass the `binds` parameter like other methods do. However,
[MySQL2Adapter's `exec_query`](https://github.com/rails/rails/blob/74a527cc63ef56f3d0a42cf638299958dc7cb08c/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb#L228L231)
works exactly the same whether this parameters is passed or not, so the output
does not change:
```ruby
def exec_query(sql, name = 'SQL', binds = [])
result = execute(sql, name)
ActiveRecord::Result.new(result.fields, result.to_a)
end
```
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Adding `# :nodoc:` to the parent `class` / `module` is not going
to ignore nested classes or modules.
There is a modifier `# :nodoc: all` but sadly the containing class
or module will continue to be in the docs.
/cc @sgrif
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`ActiveRecord::ConnectionAdapters::Type::Value` =>
`ActiveRecord::Type::Value`
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Replace `type_cast` case statement with delegation
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All subclasses of column were now delegating `type_cast` to their
injected type object. We can remove the overriding methods, and
generalize it on the `Column` class itself. This also enabled us to
remove several column classes completely, as they no longer had any
meaningful behavior of their own.
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The decision to wrap type registrations in a proc was made for two
reasons.
1. Some cases need to make an additional decision based on the type
(e.g. a `Decimal` with a 0 scale)
2. Aliased types are automatically updated if they type they point to is
updated later. If a user or another adapter decides to change the
object used for `decimal` columns, `numeric`, and `number` will
automatically point to the new type, without having to track what
types are aliased explicitly.
Everything else here should be pretty straightforward. PostgreSQL ranges
had to change slightly, since the `simplified_type` method is gone.
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Part of #15134. In order to perform typecasting polymorphically, we need
to add another argument to the constructor. The order was chosen to
match the `oid_type` on `PostgreSQLColumn`.
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* Clarify what the situation is and what to do.
* Advise loading schema using `rake db:setup` instead of migrating.
* Use a rescue in the initializer rather than extending the error
message in-place.
* Preserve the original backtrace of other errors by using `raise`
rather than raising again with `raise error`.
References 0ec45cd15d0a2f5aebc75e23d841b6c12f3ba763
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This was a common pattern:
```
query = author.posts.select(:title)
connection.select_one(query)
```
However `.select` returns a ActiveRecord::AssociationRelation, which has
the bind information, so we can use that to get the right sql query.
Also fix select_rows on postgress and sqlite3 that were not using the binds
[fixes #7538]
[fixes #12017]
[related #13731]
[related #12056]
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Building on the work of #13427 this PR adds a helpful error message to the adapters: mysql, mysql2, and sqlite3
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This will fix the [broken
test](https://github.com/rails/rails/commit/4a2650836680f51490e999c3c8441a2f9adff96e)
`test_with_limiting_with_custom_select`.
The query's result was built in a hash with column name as key, if the
result have a duplicated column name the last value was
overriding the first one.
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dougbarth/dont_swallow_exceptions_during_transactional_statements_in_mysql
Don't swallow exceptions in transctional statements
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The MySQL connection adapater swallows all StandardError exceptions,
which includes Mysql::Error and Mysql2::Error. The comment in the
exception clause claims errors thrown here indicate that transactions
aren't supported by the server but that isn't necessarily true. It's
possible the MySQL server has gone away and swallowing a failed commit
may let the application return a successful response when the data has
not been saved. Also, replication libraries like Galera require that the
application handle exceptions thrown at BEGIN/COMMIT.
I'm unable to determine what version of MySQL threw an exception for
transactional statements. I tried as far back as 3.23.49 with InnoDB
disabled but BEGIN & COMMIT statements do not throw an error. If there's
a real case for this logic to continue, we could instead push this
behavior into a configuration setting.
The exception swallowing has been there since the beginning:
db045dbbf60b53dbe013ef25554fd013baf88134
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The log output used to be confusing in situation where type casting has
"unexpected" effects. For example when finding records with a `String`.
BEFORE:
irb(main):002:0> Event.find("im-no-integer")
D, [2013-11-09T11:10:28.998857 #1706] DEBUG -- : Event Load (4.5ms) SELECT "events".* FROM "events" WHERE "events"."id" = $1 LIMIT 1 [["id", "im-no-integer"]]
AFTER:
irb(main):002:0> Event.find("im-no-integer")
D, [2013-11-09T11:10:28.998857 #1706] DEBUG -- : Event Load (4.5ms) SELECT "events".* FROM "events" WHERE "events"."id" = $1 LIMIT 1 [["id", 0]]
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This is not valid anymore after 08477a651648ba4417ded128aa37b9ae0dcbc9ce
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When the adapter is with prepared statement disabled and the binds array
is not empty the connection adapter will try to set the binds values and
will fail. Now we are checking if the adapter has the prepared statement
disabled.
Fixes #12023
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`result_metadata` returns a new object each time it is called, so calling `result_metadata.free` is essentially a noop. Instead call `free` directly on the metadata when we're done with it.
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This reverts commit cb1d07e43926bcec95cb8b4a663ca9889173395a, reversing
changes made to 754a373e301d2df0b12a11083405252722bc8366.
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Using the mysql2 adapter, boolean values were sometimes being incorrectly cast
to 't' or 'f'. This changes the cast to match the mysql adapter behavior, ie 1 and 0.
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Conflicts:
activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
activerecord/test/cases/adapter_test.rb
guides/source/testing.md
[ci skip]
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