| Commit message (Collapse) | Author | Age | Files | Lines |
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It is enough to distinguish only the trailing `unsigned` and
`unsigned zerofill`.
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Fixes #27125.
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Caused by 007e50d8e5a900547471b6c4ec79d9d217682c5d.
https://github.com/rails/rails/pull/26925 was closed in favor of dcb364e.
But dcb364e is only fixed sqlite3 adapter and still broken mysql2
adapter with `prepared_statements: true` (`exec_stmt_and_free`).
```diff
diff --git a/activerecord/test/config.example.yml b/activerecord/test/config.example.yml
index 58e2d45..7b3c1a6 100644
--- a/activerecord/test/config.example.yml
+++ b/activerecord/test/config.example.yml
@@ -56,9 +56,11 @@ connections:
username: rails
encoding: utf8
collation: utf8_unicode_ci
+ prepared_statements: true
arunit2:
username: rails
encoding: utf8
+ prepared_statements: true
oracle:
arunit:
```
```
% be rake test_mysql2 --verbose
...
Using mysql2
/Users/kamipo/src/github.com/rails/rails/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb:90: warning: assigned but unused variable - result
/Users/kamipo/src/github.com/rails/rails/activerecord/lib/active_record/connection_adapters/mysql/database_statements.rb:101:in `block in exec_stmt_and_free': NameError: undefined local variable or method `result' for #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0x007fe2c50eb140>: SELECT `ar_internal_metadata`.* FROM `ar_internal_metadata` WHERE `ar_internal_metadata`.`key` = ? LIMIT ? (ActiveRecord::StatementInvalid)
from /Users/kamipo/src/github.com/rails/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:586:in `block in log'
...
```
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A query may wait on a database-level lock, which could lead to a
deadlock between threads.
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Follow up to 99cf7558000090668b137085bfe6bcc06c4571dc.
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By doing `@connection = nil` that means that we need nil checks before it
is used anywhere, but we weren't doing those checks. Instead, we get a
NoMethodError after using a connection after it fails to reconnect.
Neither of the other adapters set @connection to nil, just the mysql2
adapter. By just closing it, we avoid the need to check if we have a
connection object and it will produce an appropriate exception when used.
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Strict mode controls how MySQL handles invalid or missing values in
data-change statements such as INSERT or UPDATE. If strict mode is not
in effect, MySQL inserts adjusted values for invalid or missing values
and produces warnings.
```ruby
def test_mysql_not_null_defaults_non_strict
using_strict(false) do
with_mysql_not_null_table do |klass|
record = klass.new
assert_nil record.non_null_integer
assert_nil record.non_null_string
assert_nil record.non_null_text
assert_nil record.non_null_blob
record.save!
record.reload
assert_equal 0, record.non_null_integer
assert_equal "", record.non_null_string
assert_equal "", record.non_null_text
assert_equal "", record.non_null_blob
end
end
end
```
It is inconsistent with other types that only text/blob defaults treated
as an empty string. This commit fixes the inconsistency.
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Style/SpaceBeforeBlockBraces
Style/SpaceInsideBlockBraces
Style/SpaceInsideHashLiteralBraces
Fix all violations in the repository.
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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`insert`, `update`, `delete`, and `exec_query` have a default value
against `name` and `binds`. But `exec_insert`, `exec_update`, and
`exec_delete` not have. It is an inconvenience and inconsistent.
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Caching a mutable string causes the following issue.
```
Loading development environment (Rails 5.1.0.alpha)
irb(main):001:0> ActiveRecord::Base.connection.quote_table_name('foo') << '!!'
=> "`foo`!!"
irb(main):002:0> ActiveRecord::Base.connection.quote_table_name('foo') << '!!'
=> "`foo`!!!!"
irb(main):003:0> ActiveRecord::Base.connection.quote_table_name('foo') << '!!'
=> "`foo`!!!!!!"
```
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Quoting booleans should return a frozen string
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If reuse `QUOTED_TRUE` and `QUOTED_FALSE` without frozen, causing the
following issue.
```
Loading development environment (Rails 5.1.0.alpha)
irb(main):001:0> ActiveRecord::Base.connection.quote(true) << ' foo'
=> "1 foo"
irb(main):002:0> ActiveRecord::Base.connection.quote(true) << ' foo'
=> "1 foo foo"
irb(main):003:0> type = ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::MysqlString.new
=> #<ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::MysqlString:0x007fd40c15e018 @precision=nil, @scale=nil, @limit=nil>
irb(main):004:0> type.serialize(true) << ' bar'
=> "1 foo foo bar"
irb(main):005:0> type.cast(true) << ' bar'
=> "1 foo foo bar bar"
```
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Because `type_cast` against `binds` always requires
`attr.value_for_database` and this pattern appears frequently.
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Address to https://github.com/rails/rails/commit/5a302bf553af0e6fedfc63299fc5cd6e79599ef3#commitcomment-18288388.
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bquorning/optimize-for-first-result-and-remove-mysql-select_one
Remove #select_one from Mysql2Adapter
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The implementation from abstract/database_statements.rb seems to work just fine.
And with ActiveRecord::Result now implementing an optimized #first method, the
performance concerns previously addressed in
https://github.com/rails/rails/commit/bf79aa4fc14aeb2646331e767038acf0b77e9e7f
should not be an issue.
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This was added at c7c3f73 but it never raised because MySQL cannot
create text/blob columns with a default value.
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Refactor of #22911.
Signed-off-by: Jeremy Daer <jeremydaer@gmail.com>
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Primary key should be `NOT NULL`
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Follow up to #18228.
In MySQL and PostgreSQL, primary key is to be `NOT NULL` implicitly.
But in SQLite it must be specified `NOT NULL` explicitly.
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* Switch to keyword args where we can without breaking compat.
* Use add_table_options! for :options, too.
* Some code polish.
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Comments are specified in migrations, stored in database itself (in its schema),
and dumped into db/schema.rb file.
This allows to generate good documentation and explain columns and tables' purpose
to everyone from new developers to database administrators.
For PostgreSQL and MySQL only. SQLite does not support comments at the moment.
See docs for PostgreSQL: http://www.postgresql.org/docs/current/static/sql-comment.html
See docs for MySQL: http://dev.mysql.com/doc/refman/5.7/en/create-table.html
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`MysqlString`
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methods to `Quoting` module
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Extract `default_primary_key?` to refactor `column_spec_for_primary_key`
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working
Currently the results of `column.serial?` is not correct. For
`column.serial?` correctly working, initialize `column.table_name`
immediately.
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Actually `:name` and `:type` are not column options.
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A return value of `schema_type` is used by:
1. primary key type: using as `symbol.inspect`
2. normal column type: using as `symbol.to_s`
It is better to return symbol.
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`connection_adapters/mysql/type_metadata.rb`
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In Pg and Sqlite3, `:text` and `:binary` have variable unlimited length.
But in MySQL, these have limited length for each types (ref #21591, #21619).
This change adds short-hand methods for each text and blob types.
Example:
create_table :foos do |t|
t.tinyblob :tiny_blob
t.mediumblob :medium_blob
t.longblob :long_blob
t.tinytext :tiny_text
t.mediumtext :medium_text
t.longtext :long_text
end
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Such as #10404, #18206.
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Currently `tinyblob` is dumped to `t.binary "tiny_blob", limit: 255`.
But `t.binary ... limit: 255` is generating SQL to `varchar(255)`.
It is incorrect. This commit fixes this problem.
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Current master branch includes many schema dumping improvements.
It extract these features to the appropriate files.
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Current master branch includes many schema creation improvements in
MySQL. It extract these features to the appropriate file.
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Current master branch includes many schema definition improvements in
MySQL. It extract these features to the appropriate file.
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