Tag Archives: MariaDB 10.9
The MariaDB Foundation is pleased to announce the availability of MariaDB 10.9.1, the first Release Candidate (RC) in the MariaDB 10.9 series, MariaDB 10.8.3, the first Generally Available (GA) release in the MariaDB 10.8 series, MariaDB 10.7.4, the second Generally Available release in the MariaDB 10.7 series (all maintained for one year from their first GA release dates), as well as MariaDB 10.6.8, MariaDB 10.5.16, MariaDB 10.4.25, MariaDB 10.3.35 and MariaDB 10.2.44, the latest stable releases in their respective series. …
SHOW ANALYZE
If you ever had to do query performance troubleshooting with MariaDB, you should be
familiar with MariaDB’s ANALYZE for statements feature. It does what EXPLAIN ANALYZE does in some other database systems: ANALYZE query runs the query and produces EXPLAIN output, amended with the data from the query execution:
FROM orders, customer
WHERE
customer.c_custkey = orders.o_custkey AND
customer.c_acctbal < 0 AND
orders.o_totalprice > 200*1000
+—-+————-+———-+——+—————+————-+———+——————–+——–+——–+———-+————+————-+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | r_rows | filtered | r_filtered | Extra |
+—-+————-+———-+——+—————+————-+———+——————–+——–+——–+———-+————+————-+
| 1 | SIMPLE | customer | ALL | PRIMARY,…
…
Continue reading “10.9 preview feature: SHOW ANALYZE and EXPLAIN FOR CONNECTION support”
The MariaDB 10.9 preview releases introduce a MySQL compatibility syntax extension, range notation. The ‘last’ keyword was added in JSON path expression, as requested in MDEV-22224 and MDEV-27911. Additionally, negative indexes are now also supported. Range notation, implemented using the ‘to’ keyword, and the ‘last’ keyword, is basically an array element selector.
Syntax:
Range notation:
[M to N] selects a range of elements starting from index M to N.
Last keyword:
[last-N] / [last] selects the Nth from last element, and last element, respectively.
…
Continue reading “10.9 preview feature: JSON path expression and JSON_OVERLAPS()”
We are pleased to announce the third MariaDB series release under the new release model, MariaDB 10.9.0.
Maturing MariaDB more quickly
One of the purposes of the new model is to get features into the hands of users more quickly, in a form which supports stability by allowing the new feature to be more easily tested, separate from other new features being developed at the same time.
Candidate features for MariaDB 10.9
There are four separate preview releases, containing the following features under consideration for release in 10.9.1:
SHOW ANALYZE FORMAT=JSON
- Extend SHOW EXPLAIN to support SHOW ANALYZE [FORMAT=JSON] (MDEV-27021)
- Add EXPLAIN FOR CONNECTION syntax support to SHOW EXPLAIN (MDEV-10000)
JSON Range Notation
- Implement range notation for JSONPath (MDEV-27911)
- Support JSONPath negative index (MDEV-22224)
- JSON_OVERLAPS function (MDEV-27677)
Async redo log write
- Asynchronous redo log write (MDEV-26603)
Miscellaneous
- Implement the –do-domain-ids, –ignore-domain-ids, and –ignore-server-ids options for mysqlbinlog (MDEV-20119)
- information_schema.tables.table_type now shows TEMPORARY
for local temporary tables.
…
Continue reading “MariaDB 10.9 preview releases now available”