Fix broken links (#1149)

Fix many broken links, especially a huge bunch caused by mariadb
migrating their docs sites without complete redirects.

Author: adamchainz

docs/aggregates.rst

@@ -22,7 +22,7 @@ The following can be imported from ``django_mysql.models``.
     Docs:
     `MySQL
     <https://dev.mysql.com/doc/refman/en/group-by-functions.html#function_bit-and>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/bit_and/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/aggregate-functions/bit_and>`__.
 
     Example usage:
 
@@ -42,7 +42,7 @@ The following can be imported from ``django_mysql.models``.
     Docs:
     `MySQL
     <https://dev.mysql.com/doc/refman/en/group-by-functions.html#function_bit-or>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/bit_or/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/aggregate-functions/bit_or>`__.
 
     Example usage:
 
@@ -62,7 +62,7 @@ The following can be imported from ``django_mysql.models``.
     Docs:
     `MySQL
     <https://dev.mysql.com/doc/refman/en/group-by-functions.html#function_bit-xor>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/bit_xor/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/aggregate-functions/bit_xor>`__.
 
     Example usage:
 
@@ -81,7 +81,7 @@ The following can be imported from ``django_mysql.models``.
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/group-by-functions.html#function_group-concat>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/group_concat/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/aggregate-functions/group_concat>`__.
 
     Example usage:
 
@@ -102,7 +102,7 @@ The following can be imported from ``django_mysql.models``.
 
         ``group_concat_max_len`` docs:
         `MySQL <https://dev.mysql.com/doc/refman/en/server-system-variables.html#sysvar_group_concat_max_len>`__ /
-        `MariaDB <https://mariadb.com/kb/en/server-system-variables/#group_concat_max_len>`__.
+        `MariaDB <https://mariadb.com/docs/server/ha-and-performance/optimization-and-tuning/system-variables/server-system-variables#group_concat_max_len>`__.
 
     Optional arguments:
 

docs/cache.rst

@@ -143,7 +143,7 @@ but you're more likely to run up against it first with the
 ``get_many``/``set_many`` operations.
 
 The `MySQL 8.0 default <https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_max_allowed_packet>`__ is 4MB,
-and the `MariaDB 10.2 default <https://mariadb.com/kb/en/server-system-variables/#max_allowed_packet>`__ is 16MB.
+and the `MariaDB 10.2 default <https://mariadb.com/docs/server/ha-and-performance/optimization-and-tuning/system-variables/server-system-variables#max_allowed_packet>`__ is 16MB.
 Most applications should be fine with these limits.
 You can tweak the setting as high as 1GB - if this isn't enough, you should probably be considering another solution!
 

docs/checks.rst

@@ -45,7 +45,7 @@ you activate this, but it's not very likely to affect you if you don't.
 
 Docs:
 `MySQL <https://dev.mysql.com/doc/refman/en/innodb-parameters.html#sysvar_innodb_strict_mode>`__ /
-`MariaDB <https://mariadb.com/kb/en/mariadb/xtradbinnodb-strict-mode/>`__.
+`MariaDB <https://mariadb.com/docs/server/server-usage/storage-engines/innodb/innodb-system-variables#innodb_strict_mode>`__.
 
 As above, the easiest way to set this is to add ``SET`` to ``init_command`` in
 your ``DATABASES`` setting:
@@ -87,7 +87,7 @@ very easy for users to type emoji on phone keyboards these days!).
 
 Docs:
 `MySQL <https://dev.mysql.com/doc/refman/en/charset-unicode-utf8mb4.html>`__ /
-`MariaDB <https://mariadb.com/kb/en/mariadb/unicode/>`__.
+`MariaDB <https://mariadb.com/docs/server/reference/data-types/string-data-types/character-sets/unicode>`__.
 
 Also see this classic blogpost:
 `How to support full Unicode in MySQL databases <https://mathiasbynens.be/notes/mysql-utf8mb4>`_.

docs/database_functions.rst

@@ -25,7 +25,7 @@ Control Flow Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/control-flow-functions.html#function_if>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/if-function/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/control-flow-functions/if-function>`__.
 
     Usage example:
 
@@ -50,7 +50,7 @@ Numeric Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/mathematical-functions.html#function_crc32>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/crc32/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/numeric-functions/crc32>`__.
 
     Usage example:
 
@@ -77,7 +77,7 @@ String Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/string-functions.html#function_concat-ws>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/concat_ws/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/concat_ws>`__.
 
     Usage example:
 
@@ -101,7 +101,7 @@ String Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/string-functions.html#function_elt>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/elt/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/elt>`__.
 
     Usage example:
 
@@ -126,7 +126,7 @@ String Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/string-functions.html#function_field>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/field/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/field>`__.
 
     Usage example:
 
@@ -155,7 +155,7 @@ XML Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/xml-functions.html#function_updatexml>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/updatexml/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/updatexml>`__.
 
     Usage example:
 
@@ -179,7 +179,7 @@ XML Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/xml-functions.html#function_extractvalue>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/extractvalue/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/extractvalue>`__.
 
     Usage example:
 
@@ -202,7 +202,7 @@ Regexp Functions
     These work with MariaDB 10.0.5+ only, which includes PCRE regular
     expressions and these extra functions to use them. More information can be
     found in `its documentation
-    <https://mariadb.com/kb/en/mariadb/regular-expressions-overview/>`_.
+    <https://mariadb.com/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regular-expressions-overview>`_.
 
 
 .. class:: RegexpInstr(expression, regex)
@@ -215,7 +215,7 @@ Regexp Functions
     column, whilst if ``regex`` is a string, it will be used as a string. If
     you want ``regex`` to refer to a column, use Django's ``F()`` class.
 
-    Docs: `MariaDB <https://mariadb.com/kb/en/mariadb/regexp_instr/>`__.
+    Docs: `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp_instr>`__.
 
     Usage example:
 
@@ -236,7 +236,7 @@ Regexp Functions
     used as strings. If you want ``regex`` or ``replace`` to refer to columns,
     use Django's ``F()`` class.
 
-    Docs: `MariaDB <https://mariadb.com/kb/en/mariadb/regexp_replace/>`__.
+    Docs: `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp_replace>`__.
 
     Usage example:
 
@@ -263,7 +263,7 @@ Regexp Functions
     column, whilst if ``regex`` is a string, it will be used as a string. If
     you want ``regex`` to refer to a column, use Django's ``F()`` class.
 
-    Docs: `MariaDB <https://mariadb.com/kb/en/mariadb/regexp_substr/>`__.
+    Docs: `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/string-functions/regular-expressions-functions/regexp_substr>`__.
 
     Usage example:
 
@@ -307,7 +307,7 @@ Information Functions
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/information-functions.html#function_last-insert-id>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/last_insert_id/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/information-functions/last_insert_id>`__.
 
     Usage examples:
 
@@ -341,7 +341,7 @@ package.
 These functions use JSON paths to address content inside JSON documents - for
 more information on their syntax, refer to the docs:
 `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json.html#json-path-syntax>`__ /
-`MariaDB <https://mariadb.com/kb/en/jsonpath-expressions/>`__.
+`MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/jsonpath-expressions>`__.
 
 
 .. class:: JSONExtract(expression, *paths, output_field=None)
@@ -364,7 +364,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html#function_json-extract>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_extract/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_extract>`__.
 
     Usage examples:
 
@@ -395,7 +395,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html#function_json-keys>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_keys/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_keys>`__.
 
     .. code-block:: pycon
 
@@ -431,7 +431,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-attribute-functions.html#function_json-length>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_length/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_length>`__.
 
     .. code-block:: pycon
 
@@ -457,7 +457,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-modification-functions.html#function_json-insert>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_insert/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_insert>`__.
 
     .. code-block:: pycon
 
@@ -480,7 +480,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-modification-functions.html#function_json-replace>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_replace/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_replace>`__.
 
     .. code-block:: pycon
 
@@ -503,7 +503,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-modification-functions.html#function_json-set>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_set/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_set>`__.
 
     .. code-block:: pycon
 
@@ -530,7 +530,7 @@ more information on their syntax, refer to the docs:
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/8.0/en/json-modification-functions.html#function_json-array-append>`__ /
-    `MariaDB <https://mariadb.com/kb/en/json_array_append/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/json-functions/json_array_append>`__.
 
     .. code-block:: pycon
 
@@ -570,7 +570,7 @@ These are MariaDB 10.0+ only, and for use with ``DynamicField``.
     examples below.
 
     Docs:
-    `MariaDB <https://mariadb.com/kb/en/mariadb/column_add/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_add>`__.
 
     Usage examples:
 
@@ -597,7 +597,7 @@ These are MariaDB 10.0+ only, and for use with ``DynamicField``.
     column". If you do mean that, use ``F('fieldname')``.
 
     Docs:
-    `MariaDB <https://mariadb.com/kb/en/mariadb/column_delete/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_delete>`__.
 
     Usage examples:
 
@@ -617,7 +617,7 @@ These are MariaDB 10.0+ only, and for use with ``DynamicField``.
     documented for the ``DynamicField`` lookups.
 
     Docs:
-    `MariaDB <https://mariadb.com/kb/en/mariadb/column_get/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/special-functions/dynamic-columns-functions/column_get>`__.
 
     Usage examples:
 

docs/locks.rst

@@ -38,7 +38,7 @@ The following can be imported from ``django_mysql.locks``.
     For more information on user locks refer to the ``GET_LOCK`` documentation
     on `MySQL
     <https://dev.mysql.com/doc/refman/8.0/en/locking-functions.html#function_get-lock>`__
-    or `MariaDB <https://mariadb.com/kb/en/mariadb/get_lock/>`__.
+    or `MariaDB <https://mariadb.com/docs/server/reference/sql-functions/secondary-functions/miscellaneous-functions/get_lock>`__.
 
     .. warning::
 
@@ -164,7 +164,7 @@ The following can be imported from ``django_mysql.locks``.
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/lock-tables.html>`_ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/lock-tables-and-unlock-tables/>`_.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-statements/transactions/lock-tables>`_.
 
     .. attribute:: read
 

docs/management_commands/dbparams.rst

@@ -57,4 +57,4 @@ take, e.g.:
     configuration being given in their DSN format; you must pass them via a
     MySQL configuration file instead.  ``dbparams`` will output a warning
     on stderr if this is the case. For more info see the `percona blog
-    <https://www.percona.com/blog/2014/10/16/percona-toolkit-for-mysql-with-mysql-ssl-connections/>`_.
+    <https://www.percona.com/blog/percona-toolkit-for-mysql-with-mysql-ssl-connections/>`_.

docs/migration_operations.rst

@@ -22,7 +22,7 @@ Install Plugin
 
     Docs:
     `MySQL <https://dev.mysql.com/doc/refman/en/install-plugin.html>`__ /
-    `MariaDB <https://mariadb.com/kb/en/mariadb/install-plugin/>`__.
+    `MariaDB <https://mariadb.com/docs/server/reference/sql-statements/administrative-sql-statements/plugin-sql-statements/install-plugin>`__.
 
     .. attribute:: name
 
@@ -67,7 +67,7 @@ Install SOName
     the library is already installed, since there is no way of knowing if all
     the plugins inside the library are installed.
 
-    Docs: `MariaDB <https://mariadb.com/kb/en/mariadb/install-soname/>`_.
+    Docs: `MariaDB <https://mariadb.com/docs/server/reference/sql-statements/administrative-sql-statements/plugin-sql-statements/install-soname>`_.
 
     .. attribute:: soname
 
@@ -119,7 +119,7 @@ Alter Storage Engine
         If you're using this to move from MyISAM to InnoDB, there's a page for
         you in the MariaDB knowledge base - `Converting Tables from MyISAM to
         InnoDB
-        <https://mariadb.com/kb/en/mariadb/converting-tables-from-myisam-to-innodb/>`_.
+        <https://mariadb.com/docs/server/server-usage/storage-engines/converting-tables-from-myisam-to-innodb>`_.
 
     Example usage:
 

docs/model_fields/dynamic_field.rst

@@ -9,7 +9,7 @@ DynamicField
 **MariaDB** has a feature called **Dynamic Columns** that allows you to store
 different sets of columns for each row in a table. It works by storing the data
 in a blob and having a small set of functions to manipulate this blob.
-(`Docs <https://mariadb.com/kb/en/mariadb/dynamic-columns/>`_).
+(`Docs <https://mariadb.com/docs/server/reference/sql-structure/nosql/dynamic-columns>`_).
 
 Django-MySQL supports the *named* Dynamic Columns of MariaDB 10.0+, as opposed
 to the *numbered* format of 5.5+. It uses the

docs/model_fields/enum_field.rst

@@ -16,7 +16,7 @@ Django.
 
 Docs:
 `MySQL <https://dev.mysql.com/doc/refman/en/enum.html>`_ /
-`MariaDB <https://mariadb.com/kb/en/mariadb/enum/>`_.
+`MariaDB <https://mariadb.com/docs/server/reference/data-types/string-data-types/enum/>`_.
 
 
 .. class:: EnumField(choices, **kwargs)

docs/model_fields/fixedchar_field.rst

@@ -19,7 +19,7 @@ behaviour.
 
 Docs:
 `MySQL <https://dev.mysql.com/doc/refman/en/char.html>`_ /
-`MariaDB <https://mariadb.com/kb/en/char/>`_.
+`MariaDB <https://mariadb.com/docs/server/reference/data-types/string-data-types/char>`_.
 
 .. class:: FixedCharField(*args, max_length: int, **kwargs)