??(???????????? ??: how to get the levels of a table or a=?utf-8?Q?_index_in_Mysql_5.6=3F?=
Jul 09, 2013; 02:54
??(????????????
??: how to get the levels of a table or a=?utf-8?Q?_index_in_Mysql_5.6=3F?=
The level is the height of a B-tree table or a B-tree index in mysql 5.6. My question is how to get the height(blevel) of a B-tree table or a B-tree index in mysql 5.6? Thanks.
In oracle database,we can use the following statement to query the blevel of a index
select index_name,blevel from dba_indexes;
> -----Original Message----- RE: how to get the levels of a table or a index in Mysql 5.6?
Or maybe the number of levels in the BTree?
Rule of Thumb: logarithm base 100
> -----Original Message----- > From: Hartmut Holzgraefe [mailto:hartmut@skysql.com] > Sent: Monday, July 08, 2013 6:38 AM > To: mysql@lists.mysql.com > Subject: Re: how to get the levels of a table or a index in Mysql 5.6? > > On 08.07.2013 04:23, ??(????????????) wrote: > > > how to get the levels of a table or a index in Mysql 5.6? > > Level? What is level supposed to be in that context? > Cardinality? Or something completely different? > > /me confused ... > > -- > Hartmut Holzgraefe <hartmut@skysql.com> Principal Support Engineer > (EMEA) SkySQL AB - http://www.skysql.com/ > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql
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