maria-developers team mailing list archive
-
maria-developers team
-
Mailing list archive
-
Message #10356
Re: [Commits] 787610a: MDEV-10766: Queries which start with WITH clause do not get inserted into query cache
Hi Varun,
On Fri, Feb 03, 2017 at 08:20:51PM +0530, Varun wrote:
> revision-id: 787610a1f5cec04311fd16f6c1de87171e5cfdd4 (mariadb-10.2.3-159-g787610a)
> parent(s): bc12d993d7bc94a9533028a258afc7e4ceb21e92
> author: Varun Gupta
> committer: Varun Gupta
> timestamp: 2017-02-03 20:17:16 +0530
> message:
>
> MDEV-10766: Queries which start with WITH clause do not get inserted into query cache
>
> Added conditions so that the WITH queries are also added to the query cache
>
> ---
> mysql-test/r/query_cache.result | 30 ++++++++++++++++++++++++++++++
> mysql-test/t/query_cache.test | 14 ++++++++++++++
> sql/sql_cache.cc | 5 ++++-
> 3 files changed, 48 insertions(+), 1 deletion(-)
>
> diff --git a/mysql-test/r/query_cache.result b/mysql-test/r/query_cache.result
> index d34c96c..fa169d4 100644
> --- a/mysql-test/r/query_cache.result
> +++ b/mysql-test/r/query_cache.result
> @@ -2136,6 +2136,36 @@ Qcache_hits 1
> use test;
> drop database `foo.bar`;
> End of 10.0 tests
> +FLUSH USER_STATISTICS;
> +FLUSH CLIENT_STATISTICS;
I'm wondering what is the reason for the above? Qcache_XXX status variables
are flushed with FLUSH STATUS.
> +flush status;
> +show status like "Qcache_inserts";
> +Variable_name Value
> +Qcache_inserts 0
> +create table t1 (i int);
> +with cte as (select * from t1) select * from cte;
> +i
> +show status like "Qcache_queries_in_cache";
> +Variable_name Value
> +Qcache_queries_in_cache 1
> +show status like "Qcache_inserts";
> +Variable_name Value
> +Qcache_inserts 1
> +show status like "Qcache_hits";
> +Variable_name Value
> +Qcache_hits 0
> +with cte as (select * from t1) select * from cte;
> +i
> +show status like "Qcache_queries_in_cache";
> +Variable_name Value
> +Qcache_queries_in_cache 1
> +show status like "Qcache_inserts";
> +Variable_name Value
> +Qcache_inserts 1
> +show status like "Qcache_hits";
> +Variable_name Value
> +Qcache_hits 1
> +drop table t1;
> restore defaults
> SET GLOBAL query_cache_type= default;
> SET GLOBAL query_cache_size= default;
BR
Sergei
--
Sergei Petrunia, Software Developer
MariaDB Corporation | Skype: sergefp | Blog: http://s.petrunia.net/blog
Follow ups