| Commit message (Collapse) | Author | Age | Files | Lines |
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I do not want to set the expectation that any enumerable object should
behave this way, but this case in particular comes up frequently enough
that I'm caving on this one.
Fixes #30684.
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It is only used `primary_key` and `connection` in the internal, so it is
not needed to delegate others to `klass` explicitly.
This doesn't change public behavior because `relation` will delegate
missing method to `klass`.
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Because `quoted_table_name` doesn't respect table alias. We should use
`arel_attribute` for that, so I added `column_name_from_arel_node` to
generate column name from an arel node.
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So using `arel_attribute(primary_key).asc` in `batch_order` instead.
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Before:
```sql
SELECT "posts".* FROM "posts" ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > 2 ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > 4 ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > 6 ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > 8 ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > 10 ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
```
After:
```sql
SELECT "posts".* FROM "posts" ORDER BY "posts"."id" ASC LIMIT ? [["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > ? ORDER BY "posts"."id" ASC LIMIT ? [["id", 2], ["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > ? ORDER BY "posts"."id" ASC LIMIT ? [["id", 4], ["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > ? ORDER BY "posts"."id" ASC LIMIT ? [["id", 6], ["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > ? ORDER BY "posts"."id" ASC LIMIT ? [["id", 8], ["LIMIT", 2]]
SELECT "posts".* FROM "posts" WHERE "posts"."id" > ? ORDER BY "posts"."id" ASC LIMIT ? [["id", 10], ["LIMIT", 2]]
```
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```ruby
require 'active_record'
require 'benchmark/ips'
ActiveRecord::Base.establish_connection(ENV.fetch('DATABASE_URL'))
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define do
create_table :users, force: true do |t|
t.string :name, :email
t.timestamps null: false
end
end
attributes = {
name: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.',
email: 'foobar@email.com'
}
class User < ActiveRecord::Base; end
1000.times do
User.create!(attributes)
end
Benchmark.ips do |x|
x.config(time: 10, warmup: 2)
x.report('pluck 1 column') do
User.pluck(:id)
end
x.report('pluck 2 columns') do
User.pluck(:id, :email)
end
x.report('pluck 1 column with scope') do
User.where(id: 1000).pluck(:id)
end
x.report('pluck 2 columns with scope') do
User.where(id: 1000).pluck(:id, :email)
end
end
```
```
Calculating -------------------------------------
pluck 1 column 122.000 i/100ms
pluck 2 columns 74.000 i/100ms
pluck 1 column with scope
615.000 i/100ms
pluck 2 columns with scope
515.000 i/100ms
-------------------------------------------------
pluck 1 column 1.272k (± 3.9%) i/s - 12.810k
pluck 2 columns 750.096 (± 3.3%) i/s - 7.548k
pluck 1 column with scope
6.074k (± 4.1%) i/s - 60.885k
pluck 2 columns with scope
5.158k (± 2.7%) i/s - 52.015k
```
```
Calculating -------------------------------------
pluck 1 column 126.000 i/100ms
pluck 2 columns 78.000 i/100ms
pluck 1 column with scope
457.000 i/100ms
pluck 2 columns with scope
434.000 i/100ms
-------------------------------------------------
pluck 1 column 1.266k (± 2.1%) i/s - 12.726k
pluck 2 columns 795.061 (± 3.0%) i/s - 7.956k
pluck 1 column with scope
4.660k (± 2.1%) i/s - 46.614k
pluck 2 columns with scope
4.355k (± 2.3%) i/s - 43.834k
```
```
Calculating -------------------------------------
pluck 1 column 126.000 i/100ms
pluck 2 columns 78.000 i/100ms
pluck 1 column with scope
539.000 i/100ms
pluck 2 columns with scope
481.000 i/100ms
-------------------------------------------------
pluck 1 column 1.308k (± 3.4%) i/s - 13.104k
pluck 2 columns 798.604 (± 2.8%) i/s - 8.034k
pluck 1 column with scope
5.530k (± 3.4%) i/s - 55.517k
pluck 2 columns with scope
4.914k (± 2.7%) i/s - 49.543k
```
```
Calculating -------------------------------------
pluck 1 column 139.000 i/100ms
pluck 2 columns 79.000 i/100ms
pluck 1 column with scope
580.000 i/100ms
pluck 2 columns with scope
526.000 i/100ms
-------------------------------------------------
pluck 1 column 1.337k (± 3.0%) i/s - 13.483k
pluck 2 columns 806.776 (± 2.7%) i/s - 8.137k
pluck 1 column with scope
5.924k (± 4.1%) i/s - 59.160k
pluck 2 columns with scope
5.276k (± 3.1%) i/s - 53.126k
```
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Delegate :rindex, :slice, :rotate(missing) to 'records'
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Context: https://github.com/rails/rails/pull/29619#discussion_r125158589
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This regression was caused by caa178c1. The block for
`set_inverse_instance` should also be passed to join dependency.
Fixes #30402.
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Ensure sum honors distinct on has_many through
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When using a has_many through relation and then summing an attribute
the distinct was not being used. This will ensure that when summing
an attribute, the number is only used once when distinct has been used.
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The previous paragraph mentions that you can hand off the same processing
queue to multiple workers. This completes the following example below it.
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chopraanmol1/support_for_has_many_and_has_one_for_where_relation
Fixed query building when relation is passed for has one or has many association in where
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has many association wrong set of primary key and foreign key are selected.
Changed code to use 'join' primary key and foreign key over 'association' primary key and foreign key.
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Return Not found Ids in ActiveRecord::NotFound
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This builds on top of 15e2da656f41af0124f7577858536f3b65462ad5.
now it also returns exact Ids which were not found which will be debugging simple.
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kamipo/relation_merger_should_not_fill_empty_values
`Relation::Merger` should not fill `values` with empty values
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Currently `Relation#merge` will almost fill `values` with empty values
(e.g. `other.order_values` is always true, it should be
`other.order_values.any?`). This means that `Relation#merge` always
changes `values` even if actually `values` is nothing changed. This
behavior will makes `Relation#empty_scope?` fragile. So `Relation#merge`
should avoid unnecessary changes.
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Condenses the clauses that are common to both sides of the OR and put them outside, before the OR
This fix the current behavior where the number of conditions is exponential based on the number of times #or is used.
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Remove single element array preprocess
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Since 213796f, array predicate handler supports making binds, so the
preprocess is no longer needed.
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Note that the two relations must still have the same `includes` values
(which is the only time `references` actually does anything). It makes
sense for us to allow this, as `references` is called implicitly when
passing a hash to `where`.
Fixes #29411
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Remove useless `JoinInformation`
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Since 213796f removed `binds`, `JoinInformation` only contain `joins`.
So it is enough to return `joins` simply.
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Since 213796f, `queries_predicates` is no longer used.
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Fix `COUNT(DISTINCT ...)` with `ORDER BY` and `LIMIT`
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Since #26972, `ORDER BY` is kept if `LIMIT` is presented for
performance. But in most SQL servers (e.g. PostgreSQL, SQL Server, etc),
`ORDER BY` expressions must appear in select list for `SELECT DISTINCT`.
We should not replace existing select list in that case.
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Honestly I don't think the tests that are fixed by this change should
have been merged. Passing a range or an array to `where` has a special
meaning. We need to solve the problem more concretely without overriding
the behavior that is present for *every* other type.
However, the damage has been done. These changes were in 5.1, so we need
a deprecation cycle to remove it.
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A common source of bugs and code bloat within Active Record has been the
need for us to maintain the list of bind values separately from the AST
they're associated with. This makes any sort of AST manipulation
incredibly difficult, as any time we want to potentially insert or
remove an AST node, we need to traverse the entire tree to find where
the associated bind parameters are.
With this change, the bind parameters now live on the AST directly.
Active Record does not need to know or care about them until the final
AST traversal for SQL construction. Rather than returning just the SQL,
the Arel collector will now return both the SQL and the bind parameters.
At this point the connection adapter will have all the values that it
had before.
A bit of this code is janky and something I'd like to refactor later. In
particular, I don't like how we're handling associations in the
predicate builder, the special casing of `StatementCache::Substitute` in
`QueryAttribute`, or generally how we're handling bind value replacement
in the statement cache when prepared statements are disabled.
This also mostly reverts #26378, as it moved all the code into a
location that I wanted to delete.
/cc @metaskills @yahonda, this change will affect the adapters
Fixes #29766.
Fixes #29804.
Fixes #26541.
Close #28539.
Close #24769.
Close #26468.
Close #26202.
There are probably other issues/PRs that can be closed because of this
commit, but that's all I could find on the first few pages.
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Without this fix, `JoinDependency` doesn't use a custom table alias:
```
% ARCONN=sqlite3 be ruby -w -Itest test/cases/relations_test.rb -n test_using_a_custom_table_with_joins_affects_the_wheres
Using sqlite3
Run options: -n test_using_a_custom_table_with_joins_affects_the_wheres --seed 14531
E
Error:RelationTest#test_using_a_custom_table_with_joins_affects_the_wheres:
ActiveRecord::StatementInvalid: SQLite3::SQLException: no such column: posts.author_id: SELECT "omg_posts".* FROM "posts" "omg_posts" INNER JOIN "authors" ON "authors"."id" = "posts"."author_id" WHERE "omg_posts"."title" = ? LIMIT ?
```
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Without this fix, SELECT clause doesn't use a custom table alias name:
```
% ARCONN=sqlite3 be ruby -w -Itest test/cases/relations_test.rb -n test_using_a_custom_table_affects_the_wheres
Using sqlite3
Run options: -n test_using_a_custom_table_affects_the_wheres --seed 31818
E
Error:
RelationTest#test_using_a_custom_table_affects_the_wheres:
ActiveRecord::StatementInvalid: SQLite3::SQLException: no such table: posts: SELECT "posts".* FROM "posts" "omg_posts" WHERE "omg_posts"."title" = ? LIMIT ?
```
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`arel_engine` is only used in `raise_record_not_found_exception!` to use
`engine.connection` (and `connection.visitor`) in `arel.where_sql`.
https://github.com/rails/arel/blob/v8.0.0/lib/arel/select_manager.rb#L183
But `klass.connection` will work as expected even if not using
`arel_engine` (described by `test_connection`). So `arel_engine` is no
longer needed.
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[ci skip]
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This is related with #27680.
Since `where_values_hash` keys constructed by `where` are string, so we
need `stringify_keys` to `create_with_value` before merging it.
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Post.where(id: 1).or(Post.where(id: 2)).where(foo: 3).unscope(where: :foo).where_clause.binds.map(&:value)
Would return [2, 3] instead of the expected [1,2]
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The `find_each`, `find_in_batches` and `in_batches` APIs usually operate
on large numbers of records, where it's preferable not to load them all
into memory at once.
If the query cache is enabled, it will hold onto the query results until
the end of the execution context (request/job), which means the memory
used is still proportional to the total number of records. These queries
are typically not repeated, so the query cache isn't desirable here.
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This reverts commit 3420a14590c0e6915d8b6c242887f74adb4120f9, reversing
changes made to afb66a5a598ce4ac74ad84b125a5abf046dcf5aa.
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Enforce frozen string in Rubocop
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Make ActiveSupport frozen-string-literal friendly.
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