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体验新版 GitCode,发现更多精彩内容 >>
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59a03095
编写于
12月 17, 2015
作者:
R
Ryuta Kamizono
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电子邮件补丁
差异文件
`join_to_delete` is same as `join_to_update`
上级
f39aa4dd
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
5 addition
and
11 deletion
+5
-11
activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
...ecord/connection_adapters/abstract/database_statements.rb
+2
-8
activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
...tive_record/connection_adapters/abstract_mysql_adapter.rb
+1
-1
activerecord/lib/active_record/relation.rb
activerecord/lib/active_record/relation.rb
+2
-2
未找到文件。
activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb
浏览文件 @
59a03095
...
...
@@ -344,18 +344,12 @@ def sanitize_limit(limit)
# The default strategy for an UPDATE with joins is to use a subquery. This doesn't work
# on MySQL (even when aliasing the tables), but MySQL allows using JOIN directly in
# an UPDATE statement, so in the MySQL adapters we redefine this to do that.
def
join_to_update
(
update
,
select
)
#:nodoc:
key
=
update
.
key
def
join_to_update
(
update
,
select
,
key
)
# :nodoc:
subselect
=
subquery_for
(
key
,
select
)
update
.
where
key
.
in
(
subselect
)
end
def
join_to_delete
(
delete
,
select
,
key
)
#:nodoc:
subselect
=
subquery_for
(
key
,
select
)
delete
.
where
key
.
in
(
subselect
)
end
alias
join_to_delete
join_to_update
protected
...
...
activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
浏览文件 @
59a03095
...
...
@@ -432,7 +432,7 @@ def exec_rollback_db_transaction #:nodoc:
# In the simple case, MySQL allows us to place JOINs directly into the UPDATE
# query. However, this does not allow for LIMIT, OFFSET and ORDER. To support
# these, we must use a subquery.
def
join_to_update
(
update
,
select
)
#
:nodoc:
def
join_to_update
(
update
,
select
,
key
)
#
:nodoc:
if
select
.
limit
||
select
.
offset
||
select
.
orders
.
any?
super
else
...
...
activerecord/lib/active_record/relation.rb
浏览文件 @
59a03095
...
...
@@ -371,11 +371,11 @@ def update_all(updates)
stmt
.
set
Arel
.
sql
(
@klass
.
send
(
:sanitize_sql_for_assignment
,
updates
))
stmt
.
table
(
table
)
stmt
.
key
=
table
[
primary_key
]
if
joins_values
.
any?
@klass
.
connection
.
join_to_update
(
stmt
,
arel
)
@klass
.
connection
.
join_to_update
(
stmt
,
arel
,
table
[
primary_key
]
)
else
stmt
.
key
=
table
[
primary_key
]
stmt
.
take
(
arel
.
limit
)
stmt
.
order
(
*
arel
.
orders
)
stmt
.
wheres
=
arel
.
constraints
...
...
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