| Commit message (Collapse) | Author | Age | Files | Lines |
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driving table
This is a regression caused by 6beb4de.
In PostgreSQL, ORDER BY expressions must appear in SELECT list when
using DISTINCT.
When using `count(:all)` with eager loading, Active Record enforces
DISTINCT to count the driving table records only. 6beb4de was caused the
regression because `count(:all)` with DISTINCT path no longer removes
ORDER BY.
We need to ignore ORDER BY when DISTINCT is enforced, otherwise not
always generated valid SQL for PostgreSQL.
Fixes #31783.
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Most of the time the table and predicate_builder
passed to Relation.new are exactly the
arel_table and predicate builder of the
given klass. This uses klass.arel_table
and klass.predicate_builder as the defaults,
so we don't have to pass them in most cases.
This does change the signaure of both Relation and
AssocationRelation. Are we ok with that?
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Allow unscoping of left_outer_joins
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Because `Relation` already have Arel `table`.
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This is a complete fix to #30995.
Originally alias tracker will only track table aliases on
`Arel::Nodes::Join`, other args are ignored.
Since c5ab6e5, parent aliases hash will be passed then it caused the
regression #30995.
It is enough to pass list of `Arel::Nodes::Join` simply, not need to
pass garbage args which will be ignored.
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`find_with_associations`
`find_with_associations` is meaningless name in this point since it just
contain `construct_join_dependency` and `apply_join_dependency`, does
not contain finding anything.
If `apply_join_dependency` returns `relation` and `join_dependency` then
`find_with_associations` is no longer needed.
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`relation.exists?` just wants to know if there is a result or not, does
not need the exact records matched. Therefore, an intermediate SELECT
query for eager loading is not necessary.
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We can use `relation.last(index)[-index]` instead of loading all records
when using reversible order because `last` will call `reverse_order`.
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Currently `last` with `offset` behaves incorrectly because `offset` can
not be reversed like `limit`. Therefore, `offset` should also be handled
like `limit`.
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This is a partial revert of #26182. There is no reason to change the
default value.
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`association_primary_key` in `TableMetadata`
Because `join_primary_key` is called by `join_keys` and it is to
abstract calling `association_primary_key`.
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Like other query bang methods.
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Currently `count(:all)` with `distinct` doesn't work correctly because
SELECT list is always replaced to `*` or primary key in that case even
if having custom SELECT list.
And also, PostgreSQL has a limitation that ORDER BY expressions must
appear in select list for SELECT DISTINCT.
Therefore, we should not replace custom SELECT list when using
`count(:all)` with `distinct`.
Closes #31277.
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Previously table name qualified `*` is used in that case. If it is not
qualified with a table name, an ambiguous column name error will occur
when using JOINs.
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Currently, sanitize methods are private. So need `send` to use from
outside class.
However, sometimes want to use sanitize methods from outside Class when
want to generate SQL including multiple tables like search.
In order to avoid using `send` in such a case, changed methods to public.
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- #30980 introcuded a change to not use `Arel.star` when model have ignored columns, a query used to look like `SELECT *. FROM developers` whereas now it would like `SELECT column1, column2 FROM developers`
- If a column has the same name has a reserved database specific keyword (such as key, where ...) then the query would fail because the names aren't quoted
- Quoting almost always happen unless we use a `from` clause in the query https://github.com/rails/rails/blob/9965b98dc0d58a86e10b4343bb6e15e01661a8c3/activerecord/lib/active_record/relation/query_methods.rb#L1052
- This PR cast all columns name to symbols in order for the quoting logic to be picked up https://github.com/rails/rails/blob/9965b98dc0d58a86e10b4343bb6e15e01661a8c3/activerecord/lib/active_record/relation/query_methods.rb#L1054-L1055
- A reproduction script can be found here https://gist.github.com/Edouard-chin/f56d464a0adcb76962afc1a9134a1536
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This regression was caused at 213796fb due to polymorphic predicates are
combined by `Arel::Nodes::And`. But I'd like to keep that combined
because it would help inverting polymorphic predicates correctly
(e9ba12f7), and we can collect equality nodes regardless of combined by
`Arel::Nodes::And` (`a AND (b AND c) AND d` == `a AND b AND c AND d`).
This change fixes the regression to collect equality nodes in
`Arel::Nodes::And` as well.
Fixes #31338.
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ref https://github.com/rails/rails/pull/22653
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Make it clear that `exists?` can be chained onto a relation
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Disallow raw SQL in dangerous AR methods
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with Arel SQL literator which overrides #concat
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Do not use `Arel.star` when `ignored_columns`
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If there are any ignored columns, we will now list out all columns we
want to be returned from the database.
Includes a regression test.
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`joins_values.partition` will break joins values order. It should be
kept as user intended order.
Fixes #15488.
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`CollectionProxy`
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Fixes #21577.
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Use these to back the attributes API. Stop automatically including
ActiveModel::Dirty in ActiveModel::Attributes, and make it optional.
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is needed
Fixes #30315.
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It should be shared the count of alias tracking in both INNER/LEFT JOINs
to avoid duplicate aliases.
Fixes #30504.
Closes #30410.
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This basically reverts 9d4f79d3d394edb74fa2192e5d9ad7b09ce50c6d
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This is the fix for the regression of #29848.
In #29848, I've kept existing select list in the subquery for the count
if ORDER BY is given. But it had accidentally affect to GROUP BY
queries also. It should keep the previous behavior in that case.
Fixes #30886.
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parent relation's aliases
Building association scope in join dependency should respect the parent
relation's aliases to avoid using the same alias name more than once.
Fixes #30681.
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I don't think this is a good abstraction because the internal method is
used only if the relation need to be applied join dependency.
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`relation.exists?` should reference correct aliases while joining tables
of has_many through associations.
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This is preparation to respect parent relation's alias tracking for
fixing #30681.
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