On 10/03/2016 08:16 PM, Richard wrote:
> If
> you want/need to use it I believe you need to use the "backtick" to
> quote the name
>
Yes, that worked. Thank you.
Is there an easy way to rename a database?
--
James Moe
moe dot james at sohnen-moe dot com
520.743.3936
T
What is wrong with 'sma-v4-01'?
--
James Moe
moe dot james at sohnen-moe dot com
520.743.3936
Think.
signature.asc
Description: OpenPGP digital signature
What is wrong with 'sma-v4-01'?
--
James Moe
moe dot james at sohnen-moe dot com
520.743.3936
Think.
signature.asc
Description: OpenPGP digital signature
?
That is rather vague.
What data is stored for each user?
What are these queries that a user may perform?
- --
James Moe
moe dot james at sohnen-moe dot com
520.743.3936
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Version: GnuPG v2
iEYEARECAAYFAlXUvlgACgkQzTcr8Prq0ZPrHQCdFDqY9uEa1mS62LuUr7FhqzEa
.
I see no reason to create a unique user account for this use case.
Each user's data goes into a singe table, and a view based on the
user's ID would restrict data access for each user.
- --
James Moe
moe dot james at sohnen-moe dot com
520.743.3936
-BEGIN PGP SIGNATURE-
Version: GnuPG v2
The odds of a spurious collision with MD5 (128 bits) can be phrased this way:
If you have 9 Trillion different items, there is one chance in 9 Trillion that
two of them have the same MD5.
To phrase it another way, it is more likely to be hit by a meteor while winning
the mega-lottery.
There's an old saying, If it ain't broke, don't fix it.
Why _might_ 5.6.x or 5.7.x be better for you? Sure there might be some
features you might want, might be some performance improvements that you might
notice, etc. And there might be some regressions that will bite you.
Fortunately,
Still more to this saga
Comment 1:
... HAVING x;
The expression ( x ) is evaluated as a true/false value, based on whether x is
nonzero (true) or zero (false). Your 'x' is MIN(date_time) , which is very
likely to be nonzero, hence TRUE. That is, the HAVING does nothing useful.
Comment
Check your ~/.my.cnf and other places where configuration might be causing the
problem (such as pager).
-Original Message-
From: Radoulov, Dimitre [mailto:cichomit...@gmail.com]
Sent: Wednesday, September 18, 2013 7:32 AM
To: zxycscj; mysql
Subject: Re: All command has no content,
Assuming that your goal is to migrate an old database, perhaps the things that
will bite you the fastest:
* TYPE=MyISAM -- ENGINE=MyISAM.
* CHARACTER SETs -- no concept in until 4.1. Use DEFAULT CHARACTER SET=latin1
for now. Later you can figure out how to migrate to utf8. (Note that 5.5
bugs.mysql.com
-Original Message-
From: Ben Clewett [mailto:b...@clewett.org.uk]
Sent: Thursday, September 05, 2013 6:38 AM
To: mysql@lists.mysql.com
Subject: Core Dump
Dear MySQL,
Using 5.1.56, I have experienced this core dump. Is there anybody out
there qualified to give
certain rows can no longer be found -- Do CHECK TABLE. (It will take a
lng time.) It may tell you to REPAIR TABLE, which will also take a lng
time; but it will be necessary. (This is a strong reason for going to InnoDB.
But it will be 2x-3x bigger on disk.)
-Original
Please provide SHOW CREATE TABLE and SHOW TABLE STATUS for each table.
It smells like there is an inconsistency in the datatype of facts.accounts.id
and what it is JOINing to.
Also provide the full SELECT.
How much RAM do you have?
-Original Message-
From: Johan De Meersman
VIEWs are not well optimized. Avoid them.
The SlowLog will probably point to the worst query; we can help you improve it
(SHOW CREATE TABLE; SHOW TABLE STATUS; EXPLAIN)
Only minutes to go through 10 million records? Sounds good. It takes time to
shovel through that much stuff.
Sending data
I have to update the query every time.
Therein lies the difficulty with the schema design.
You could write a stored procedure to locate all the tables (use
information_schema.TABLES, etc) and build the UNION, and finally execute it.
The SP would have something very remotely like the foreach
Most RAID controllers will happily do Elevator stuff like you mentioned.
So will Linux.
For MySQL + RAID, a Linux elevator strategy of 'deadline' or 'noop' is optimal.
(The default, 'cfq', is not as good.)
A RAID controller with multiple drives striped (and optionally parity-checked)
(RAID-5,
James; will...@techservsys.com; mysql@lists.mysql.com
Subject: RE: hypothetical question about data storage
Rick James rja...@yahoo-inc.com wrote:
For MySQL + RAID, a Linux elevator strategy of 'deadline' or 'noop' is
optimal. (The default, 'cfq', is not as good.)
I should look into those
Count the disk hits
If you have a filesystem directory, consider that it is designed to handle
small numbers of files per directory. Consider that there is a limited cache
for directories, etc. Plus there is the inode (vnode, whatever) storage for
each file. I don't know the details (and it
I'm unclear on your task, but maybe this function will help:
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_str-to-date
(It is confusing to have dato as both a column name and an alias.)
-Original Message-
From: Karl-Arne Gjersøyen
4) 3 tables from the slaves are to be replicated back to the master
NO.
However, consider Percona XtraDb Cluster or MariaDB+Galera. They allow
multiple writable masters. But they won't let you be so selective about tables
not being replicated.
Here are the gotchas for Galera usage:
Did you change innodb_log_file_size?
-Original Message-
From: Johan De Meersman [mailto:vegiv...@tuxera.be]
Sent: Tuesday, July 23, 2013 9:57 AM
To: Luis H. Forchesatto; mysql list
Subject: Re: InnoDB problem.
Eek.
No immediate clue here, but maybe someone else does - so please
Either change it back, or delete the log files so that they will be built in
the new size. (Backup the entire tree, just in case.)
From: Manuel Arostegui [mailto:man...@tuenti.com]
Sent: Tuesday, July 23, 2013 1:05 PM
To: Rick James
Cc: Johan De Meersman; Luis H. Forchesatto; mysql list
Subject
For most, not all, production servers, these two are the 'right' settings:
query_cache_type = OFF
query_cache_size = 0
Both are needed to avoid some code paths from being unnecessarily followed.
(Maybe someday, that will be fixed, too.)
I recommend only 50M as the max for _size.
Here are
Another flavor to try:
SELECT COLUMN_NAME,
group_concat(db_tbl SEPARATOR ' ') as db_tbls,
group_concat(DISTINCT info SEPARATOR ' | ') as infos
FROM (
SELECT COLUMN_NAME,
concat(TABLE_SCHEMA, '.', TABLE_NAME) as db_tbl,
Or maybe the number of levels in the BTree?
Rule of Thumb: logarithm base 100
-Original Message-
From: Hartmut Holzgraefe [mailto:hart...@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?
See if you like this:
SELECT TABLE_SCHEMA as db, TABLE_NAME, COLUMN_NAME,
CHARACTER_SET_NAME, COLUMN_TYPE
FROM `COLUMNS`
ORDER BY 3,4,5;
You might be able to embellish on it to avoid consistent definitions, etc.
-Original Message-
From: Daevid Vincent
Set innodb_buffer_pool_size to 70% of _available_ ram. That may be 11G on your
16GB machine, unless you have a lot of other bulky stuff there. Do _not_ make
it so large that it leads to swapping. Swapping is much worse on performance
than shrinking the buffer_pool.
36 seconds for a
What setting(s) did you change to move to the separate partition?
SHOW VARIABLES LIKE '%bin%';
SHOW VARIABLES LIKE '%dir%';
(there may be other VARIABLES worth checking)
What steps did you take for the move? (Actually move bin.1? Start over? etc?)
Consider using expire_logs_days.
5.0
Fetch rows_affected after each INSERT/UPDATE. Tally them in @variables, if you
like. The information is not (I think) available after COMMIT.
-Original Message-
From: Neil Tompkins [mailto:neil.tompk...@googlemail.com]
Sent: Tuesday, July 02, 2013 4:30 AM
To: [MySQL]
Subject: Get
I once found a slowlog called simply 1. But I did not track down the cause.
Possibly it was a not-so-correct configuration script.
SHOW VARIABLES LIKE '%dir%';
ibdata1 grows (never shrinks) when data is added, ALTER is done, etc. It will
reuse free space within itself.
cgroups won't work for individual MySQL users, only for mysqld as a whole.
Monitor the slowlog and help the naughty users fix their naughty queries.
-Original Message-
From: Rafał Radecki [mailto:radecki.ra...@gmail.com]
Sent: Tuesday, July 02, 2013 3:07 AM
To: mysql@lists.mysql.com
FULLTEXT (at least the MyISAM version) has 3 gotchas:
ft_min_word_len=4, stopwords, and the 50% rule
-Original Message-
From: shawn green [mailto:shawn.l.gr...@oracle.com]
Sent: Tuesday, July 02, 2013 10:21 AM
To: mysql@lists.mysql.com
Subject: Re: Full text search and sign as a
The particular example given here is unsafe and slow.
* Without an ORDER BY, you are not guaranteed that the chunks will be distinct.
* If there are any INSERTs/DELETEs between chunk copies, you will get
dups/missing rows for two reasons: the inserted/deleted rows, and the OFFSET
is not quite
Prefer xfs on RHEL.
Certain stalls are inherent in older InnoDBs, but MariaDB 5.5 should have the
Percona fixes that greatly smoothed out that problem.
What kind of drives? A RAID controller with caching helps for datasets that
big.
innodb_flush_log_at_trx_commit = 1 is a big performance
Submit a bug:
http://bugs.mysql.com
Alas, you probably cannot provide a reproducible test case. Still, someone
might start at the code and discover a possible cause.
-Original Message-
From: Andy Wallace [mailto:awall...@ihouseweb.com]
Sent: Wednesday, June 26, 2013 3:10 PM
To:
(`site_id`,`index_date`,`index_month`,`index_year`,`keyword`,`source`,`visits`,
`bounced_visits`,`transactions`,`revenue`,`value_per_click`,`conversions`,`goal_value`);
May we see the SHOW CREATE TABLE? Some of this smells bad.
* It is almost always bad to split day/month/year into multiple
” and
appeared after MySQL crash?
i know what happened but how get rid of these two bullshit files after
*three years* not touched and used by mysqld
Am 20.06.2013 21:28, schrieb Rick James:
#sql files are temp tables that vanish when the ALTER (or whatever)
finishes. If you find one
SHOW GLOBAL STATUS LIKE 'Innodb%';
Then do some math -- usually dividing by Uptime.
That will give you some insight in how hard the I/O is working, and how full
the buffer_pool is.
-Original Message-
From: Rafał Radecki [mailto:radecki.ra...@gmail.com]
Sent: Friday, June 21, 2013 4:59
Yeah, why not flush them to disk on a clean shutdown, and periodically before
that?
-Original Message-
From: Dotan Cohen [mailto:dotanco...@gmail.com]
Sent: Sunday, June 23, 2013 10:39 AM
To: mysql.
Subject: UPDATE_TIME for InnoDB in MySQL 5.7
The MySQL 5.7 changelog mentions:
Switch to InnoDB so you won't have to repair after crashes.
Caution: InnoDB takes 2x-3x the disk space per table. Be sure to use
innodb_file_per_table=1.
Repair by sort. is usually much faster than repair by keycache; you
probably got 'sort' because of this being big enough:
#sql files are temp tables that vanish when the ALTER (or whatever) finishes.
If you find one sitting around, it sounds like a crash happened in the middle
of the ALTER.
-Original Message-
From: Reindl Harald [mailto:h.rei...@thelounge.net]
Sent: Wednesday, June 19, 2013 12:19 PM
Waiting for master to send event -- just means that nothing is being
replicated at the moment.
The Yes+Yes says that things are running.
Seconds_behind_master = 0 says that the Slave is essentially caught up. NULL
means something is broken. 0 _may_ indicate a problem, or it may indicate a
Thinking out of the box... (And posting my reply at the 'wrong' end of the
email.)...
Are there fewer than 64 genres? Use a SET or BIGINT UNSIGNED.
AND sg.`genre_id` IN (10,38)
AND sg.`genre_id` NOT IN (22,61)
--
AND genre ((110) | (138)) != 0
I'm the ORIGINAL Rick James, B (And, I'm still alive.) LOL
If you are using PHP, you might want to stop at 31 bits per INT/SET. PHP seems
not to yet be in the 64-bit world.
-Original Message-
From: Daevid Vincent [mailto:dae...@daevid.com]
Sent: Wednesday, June 12, 2013 11:26
Soundex is the 'right' approach, but it needs improvement. So, find an
improvement, then do something like this...
Store the Soundex value in a column of its own, INDEX that column, and JOIN on
that column using =. Thus, ...
* You have spent the effort to convert to Soundex once, not on every
UUID PRIMARY KEY (or even secondary index) --
Once the table gets big enough (bigger than RAM cache), each row INSERTed (or
SELECTed) will be a disk hit. (Rule of Thumb: only 100 hits/sec.) This is
because _random_ keys (like UUID) make caching useless. Actually, the slowdown
will be
(To ramble in a slightly different direction...)
I claim that the world gained half a second when we went from round time to
square time a few decades ago. Before then, announcers on radio/tv would
look at their round-shape analog clock to see what time it was; they would
perform a ROUND()
DATETIME
Hello Rick,
On 5/23/2013 7:08 PM, Rick James wrote:
Watch out for CAST(), DATE(), and any other function. In a WHERE
clause, if you hide an indexed column inside a function, the index
cannot be used for optimization.
INDEX(datetime_col)
...
WHERE DATE(datetime_col
I use this; it keeps me out of trouble whether I am using
* MySQL's DATE vs DATETIME vs TIMESTAMP
* Sybase dates (to minute or to millisecond, hence :59:59 does not work)
* leap year
WHERE dt = ?
AND dt ? + INTERVAL ? DAY
I fill in the first two ? with the same starting date.
Watch out for CAST(), DATE(), and any other function. In a WHERE clause, if
you hide an indexed column inside a function, the index cannot be used for
optimization.
INDEX(datetime_col)
...
WHERE DATE(datetime_col) = '2013-01-01'
will not use the index!
The workaround is messy, but worth
ext does less well with simultaneous IOPs than xfs.
-Original Message-
From: Manuel Arostegui [mailto:man...@tuenti.com]
Sent: Wednesday, May 22, 2013 12:22 AM
To: Rafał Radecki
Cc: mysql@lists.mysql.com
Subject: Re: Mysql server - which filesystem to choose? Is it really
that
In query syntax, TRUE is the same as 1; FALSE is the same as 0.
A minor syntax note: ENUM('FALSE', 'TRUE') would require quotes when using it.
If you have multiple 'flags', consider the SET datatype. (Yeah, it is somewhat
clumsy.)
If you have installed 5.6, simply try BOOL or BOOLEAN. I
The fragmented message is bogus. It says it to everyone. Almost no one
needs to OPTIMIZE their tables.
-Original Message-
From: Miguel González [mailto:miguel_3_gonza...@yahoo.es]
Sent: Tuesday, May 21, 2013 2:03 PM
To: mysql@lists.mysql.com
Subject: fragmentation in innodb tables
Sorry, I can't address your specific question, but I have several other tips,
some of which may save a lot of space...
USING HASH -- ignored; presumably BTree is used instead.
What Version of MySQL? 5.5(?) can drop an InnoDB (only?) index live.
BTrees sometimes grow after any sort of
the query run _much_ faster. If not, provide
the SHOW CREATE TABLE for the tables being used here, plus EXPLAIN SELECT.
-Original Message-
From: Robinson, Eric [mailto:eric.robin...@psmnv.com]
Sent: Friday, May 10, 2013 11:36 AM
To: Rick James; Bruce Ferrell; mysql@lists.mysql.com
Triggers use whatever code you put in them.
Recommendations for what?
-Original Message-
From: Aastha [mailto:aast...@gmail.com]
Sent: Friday, May 10, 2013 11:55 AM
To: mysql@lists.mysql.com
Subject: Triggers
If triggers use complex business rules and large transaction.
What
MyISAM? Or InnoDB?
Lock_time perhaps applies only to table locks on MyISAM.
SHOW ENGINE InnoDB STATUS;
You may find some deadlocks.
Is Replication involved?
Anyone doing an ALTER?
-Original Message-
From: Robinson, Eric [mailto:eric.robin...@psmnv.com]
Sent: Thursday, May 09, 2013
1. MyISAM locks _tables_. That can cause other connections to be blocked.
Solution: switch to InnoDB. Caution: There are a few caveats when switching;
see
https://kb.askmonty.org/en/converting-tables-from-myisam-to-innodb/
2. As mentioned by Shawn, the Query Cache can be more trouble than
1) Enable log-bin on master2 (slave that will be converted to a master)
That does not 'convert' it -- it makes it both a Master and a Slave (a Relay).
The CHANGE MASTER is probably correct, but it is difficult to find the right
spot.
A simple way is to
1. Stop all writes everywhere.
2. Wait
You want to say either Germany or Deutschland, depending on a
language_code somewhere?
Remove the strings you have in those tables now; add about 4 new tables, each
one paralleling the existing tables, but more rows and these columns:
* id (the PK of the existing table)
* language code (ENUM or
Or
SELECT ... \G
(replace ';' with '\G')
-Original Message-
From: h...@tbbs.net [mailto:h...@tbbs.net]
Sent: Wednesday, April 24, 2013 9:55 AM
To: mysql list
Subject: Re: how to list record in column (instead of a row)
2013/04/24 09:06 -0700, Rajeev Prasad
this table has
Please provide
SHOW CREATE TABLE cdsem_event_message_idx \G
EXPLAIN SELECT * FROM cdsem_event_message_idx where event_id in () \G
SHOW VARIABLES LIKE 'autocommit';
These can impact DELETE speed:
* secondary indexes
* whether event_id is indexed.
* disk type and speed --
OR would not show dups.
WHERE duespaid AND cat1 OR cat2
means
WHERE (duespaid AND cat1) OR cat2
That is probably not what you wanted -- add parens like
WHERE duespaid AND (cat1 OR cat2 ...)
But...
That is not a good way to build a schema. What will happen when you add
category9?
Plan A:
See also Percona XtraDB Cluster.
Will you nodes be in the same physical location? If so, what about floods,
earthquakes, etc?
Clouds are ephemeral; data wants to persist
-Original Message-
From: Andrew Morgan [mailto:andrew.mor...@oracle.com]
Sent: Tuesday, April 30, 2013 12:36 AM
WHERE id = UNHEX('36a461c81cab40169791f49ad65a3728')
-Original Message-
From: Martin Koch [mailto:m...@issuu.com]
Sent: Tuesday, April 30, 2013 8:18 AM
To: mysql@lists.mysql.com
Subject: Long integer constant problem in views
Hi List
I have a table with a primary key with
James:
What's the STATUS value of Threads_running? If it really is
~60-100 connection threads, then there could be any of a few temp
allocations for the queries. Some allocations are per-subquery.
Usually around 2-4. I also tried checking if killing / resetting
existing (idle
What's the STATUS value of Threads_running? If it really is ~60-100
connection threads, then there could be any of a few temp allocations for the
queries. Some allocations are per-subquery.
5.6 has a lot of new tricks for optimizing certain subqueries -- such as
testing out all possible
Kazakevich [mailto:ilya.kazakev...@jetbrains.com]
Sent: Wednesday, April 17, 2013 8:05 AM
To: Rick James
Cc: 'MySQL'
Subject: RE: Mesaure query speed and InnoDB pool
Hello Rick,
Run your query twice; take the second time. For most queries the
first
run brings everything into cache
Run your query twice; take the second time. For most queries the first run
brings everything into cache, then the second gives you a repeatable, though
cached, timing.
Please provide EXPLAIN SELECT, SHOW CREATE TABLE, and we will critique your
indexes and query plan.
Handler* is another way
.
If I set it to 800-900M, it just fine and I have like 100M of RAM left
for some occasional process. I did try it.
Thanks,
Igor
On 16/04/13 16:21, Rick James wrote:
Run your query twice; take the second time. For most queries the
first run brings everything into cache, then the second gives
I would guess it would work.
Better to upgrade to RHEL 6.3.
-Original Message-
From: Keith Keller [mailto:kkel...@wombat.san-francisco.ca.us]
Sent: Friday, April 05, 2013 6:46 AM
To: mysql@lists.mysql.com
Subject: Re: MySQL on RHEL4
On 2013-04-05, Nitin Mehta ntn...@yahoo.com
An optimization (at least in InnoDB) is to delay updating the secondary
index(es). If you can provide a reproducible test case, it would probably be
worth filing a bug at bugs.mysql.com
-Original Message-
From: Andrés Tello [mailto:mr.crip...@gmail.com]
Sent: Friday, April 05, 2013
Richard, there is more to a system than number of queries.
Please post these in a new thread on http://forums.mysql.com/list.php?24 :
SHOW GLOBAL STATUS;
SHOW VARIABLES;
Ram size
I will do some analysis and provide my opinion.
-Original Message-
From: Manuel Arostegui
, schrieb spameden:
2013/3/19 Rick James rja...@yahoo-inc.com
mailto:rja...@yahoo-inc.com:
you never have hosted a large site
Check my email address before saying that.
:D
as said, big company does not have only geniusses
I do not judge only on 1 parameter
...@thelounge.net]
Sent: Tuesday, April 02, 2013 2:00 PM
To: mysql@lists.mysql.com
Subject: Re: How to change max simultaneous connection parameter in
mysql.
Am 02.04.2013 22:56, schrieb Rick James:
I hear that nginx is very fast for a certain class of web serving.
yes
But what happens
/19 Rick James rja...@yahoo-inc.com:
you never have hosted a large site
Check my email address before saying that.
:D
as said, big company does not have only geniusses
I do not judge only on 1 parameter, Rick has been constantly helping
here and I'm pretty sure he has more
How often to OPTIMIZE?
The Short answer: Never.
The Long answer: A _few_ tables _may_ need OPTIMIZE _sometimes_.
One test: Is the free space (according to SHOW TABLE STATUS or equivalent
information_schema stuff) is 10%, then OPTIMIZE. Maybe. However... That
math works OK for MyISAM,
select * from tab where anwer_timestamp in (select max(anwer_timestamp) from
tab where q_id in (select distinct q_id from tab) group by q_id);
That query will be extremely slow if you have lots of data. This is because
the construct in (select...) is not optimized (until version 5.6).
select
Check directory permissions, and check out the 'answers' in here:
http://forums.mysql.com/read.php?10,284776,284936
-Original Message-
From: Patrice Olivier-Wilson [mailto:b...@biz-comm.com]
Sent: Monday, March 18, 2013 12:05 PM
To: mysql@lists.mysql.com
Subject: MySQL Error#: 2002
an error.
-Original Message-
From: Reindl Harald [mailto:h.rei...@thelounge.net]
Sent: Monday, March 18, 2013 12:15 PM
To: mysql@lists.mysql.com
Subject: Re: How to change max simultaneous connection parameter in
mysql.
Am 18.03.2013 19:26, schrieb Rick James:
If you are running
If you are running Apache with MaxClients set too high, that can cause the
problem. That Apache setting should be something like 20. (Other web servers
have similar settings.)
-Original Message-
From: Igor Shevtsov [mailto:nixofort...@gmail.com]
Sent: Saturday, March 16, 2013 1:45
simultaneous connection parameter in
mysql.
Am 18.03.2013 21:01, schrieb Rick James:
20 is plenty if your pages run fast enough
it is not
you never have hosted a large site
Excess clients after MaxClients are queued in Apache
so what - it doe snot help you
been there, done
Possibly related:
http://ronaldbradford.com/blog/why-sql_mode-is-important-2011-06-01/
http://rpbouman.blogspot.com/2009/01/mysqls-sqlmode-my-suggestions.html
http://gabrito.com/post/when-installing-mysql-always-set-the-sql-mode
-Original Message-
From: h...@tbbs.net
Clustrix now has a software version of their auto-sharding system. (It used to
be that they only sold an 'appliance'.)
-Original Message-
From: Andrew Morgan [mailto:andrew.mor...@oracle.com]
Sent: Monday, March 18, 2013 6:51 AM
To: Mike Franon
Cc: mysql@lists.mysql.com
Subject:
A lot of details are missing...
Engine: MyISAM? InnoDB? other?
Let's see the SELECT.
If InnoDB, let's see the transaction, if it is part of such.
If InnoDB, which (COMPACT, etc) are you using.
You are asking about a single row with the 500MB, correct?
In general, each
What language are you using?
In Perl, there is
$sth-more_results;
-Original Message-
From: Girish Talluru [mailto:girish.dev1...@gmail.com]
Sent: Wednesday, March 13, 2013 5:24 AM
To: mysql@lists.mysql.com
Subject: How to return resultset from MySQL Stored Procedure using
What settings? (innodb_autoinc_lock_mode comes to mind, but there may be
others.)
It is acceptable, by the definition of AUTO_INCREMENT, for it to burn the
missing 15K ids.
-Original Message-
From: spameden [mailto:spame...@gmail.com]
Sent: Tuesday, March 12, 2013 2:34 PM
To:
To: Rick James
Cc: mysql@lists.mysql.com
Subject: Re: auto_increment field behavior
2013/3/13 Rick James rja...@yahoo-inc.com:
What settings? (innodb_autoinc_lock_mode comes to mind, but there
may
be others.)
Hi, Rick.
Many thanks for the quick answer here is my settings:
mysql show
What do _you_ mean by a new High Availability solution?
See also Percona Cluster. It uses InnoDB (XtraDB), so that might be zero
change for you. Oops, except that you should check for errors after COMMIT.
-Original Message-
From: Johan De Meersman [mailto:vegiv...@tuxera.be]
Sent:
If it is MyISAM and there is some form of corruption, you might get the symptom
you see. Do CHECK TABLE.
information_schema has the same flaw in row count as SHOW TABLE STATUS for
InnoDB.
-Original Message-
From: Stillman, Benjamin [mailto:bstill...@limitedbrands.com]
Sent:
They are both right. It is a matter of how many decimal places you want to
display:
mysql SELECT 365 * 1.67 * ( 1 - 0.10);
+--+
| 365 * 1.67 * ( 1 - 0.10) |
+--+
| 548.5950 |
+--+
1 row in set (0.00 sec)
* Smells like some huge LONGTEXTs were INSERTed, then DELETEd. Perhaps just a
single one of nearly 500M.
* Yes, there is an impact on full table scans -- it has to step over the empty
spots. Or maybe not -- one big cow chip of 500MB would be easy to leap over.
* OPTIMIZE TABLE is the
It is safer to have the Slave be a newer version.
-Original Message-
From: Reindl Harald [mailto:h.rei...@thelounge.net]
Sent: Thursday, February 21, 2013 10:30 AM
To: mysql@lists.mysql.com
Subject: Re: replication fails after upgrade to 5.6
Am 21.02.2013 19:11, schrieb Mike
Ditto. I would mysqldump 5.0, load it onto a 5.5 (or 5.6) box that you have as
a slave of the 5.0 master. The load may uncover some issues. Testing reads
may uncover issues. The replication stream will test the writes; it may
uncover issues.
After being comfortable with that, build new
, 2013 2:59 PM
To: Rick James
Cc: mysql
Subject: Re: slave replication with lots of 'duplicate entry' errors
On Thu, Feb 14, 2013 at 5:46 PM, Rick James rja...@yahoo-inc.com
wrote:
Is it in read only mode?
Furthermore, are all users logging in as non-SUPER users? Note:
root bypasses
Is it in read only mode?
Furthermore, are all users logging in as non-SUPER users? Note: root bypasses
the readonly flag!
-Original Message-
From: Manuel Arostegui [mailto:man...@tuenti.com]
Sent: Thursday, February 14, 2013 1:55 PM
To: Robert Citek
Cc: mysql
Subject: Re: slave
Singer, do you have some examples?
-Original Message-
From: Singer Wang [mailto:w...@singerwang.com]
Sent: Thursday, February 14, 2013 2:59 PM
To: Mihail Manolov
Cc: Mike Franon; Akshay Suryavanshi; mysql@lists.mysql.com
Subject: Re: Upgrading form mysql 5.0.90 to 5.5 or 5.6
...@liquidation.com]
Sent: Thursday, February 14, 2013 3:30 PM
To: Rick James
Cc: Singer Wang; Mike Franon; Akshay Suryavanshi;
mysql@lists.mysql.com
Subject: Re: Upgrading form mysql 5.0.90 to 5.5 or 5.6
The ones that didn't work for me required table rearrangement in the
query. MySQL 5.5 was very
, the other with precedence of commajoin vs explicit
JOIN.
From: Singer Wang [mailto:w...@singerwang.com]
Sent: Thursday, February 14, 2013 3:41 PM
To: Rick James
Cc: Mihail Manolov; Mike Franon; Akshay Suryavanshi; mysql@lists.mysql.com
Subject: Re: Upgrading form mysql 5.0.90 to 5.5 or 5.6
Its a very
As a Rule of Thumb, function evaluation time is not significant to the overall
time for running a query. (I see IF and CASE as 'functions' for this
discussion.)
Do you have evidence that says that IF is slower? Perhaps using BENCHMARK()?
-Original Message-
From: h...@tbbs.net
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