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Displaying posts with tag: Pythian (reset)

Log Buffer #196, A Carnival of the Vanities for DBAs
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Welcome to Log Buffer, the weekly roundup of database industry news.

For your reading pleasure this week we have Log Buffer #196:

Charles Hooper blogs about an in-depth investigation on what can cause Oracle to ignore a hint.

Doug Burns reminds his readers that there are only two weeks left to

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INFORMATION_SCHEMA tables are case sensitive
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I wanted to get examples of some of the extra information that the Percona server has in its INFORMATION_SCHEMA metadata, and in doing so, I stumbled across an interesting MySQL bug/feature/point — INFORMATION_SCHEMA tables (which are actually system views) are case sensitive when used in comparisons:

mysql> use information_schema;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql>  select @@version;
+--------------------+
| @@version          |
+--------------------+
| 5.1.36-xtradb6-log |
+--------------------+
1 row in set (0.00 sec)

mysql> use information_schema;
Database changed
mysql> show tables like 'innodb%';
Empty set (0.00 sec)

mysql>  show tables like 'INNODB%';

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Log Buffer #195, A Carnival of The Vanities for DBAs
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A short post marks Pythian’s 195th edition of Log Buffer, a blog of blogs encapsulating what’s going on in the world of database administration.

Remember if you find a link or interesting blog post that you think Log Buffer should mention, send a note to the editor at Log Buffer and be sure to include the link, and a short note on why you think that others will want to read it too.

Now on to Log Buffer #195. Alex Gorbachev starts us off with his suggested readings and funnily enough,

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The XLDB4 Conference for Very Large Databases
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Ronald saved me a post by giving his feedback on a few Oracle conferences that now have MySQL content.

My opinion is pretty much a summary of Ronald’s post, so I won’t repeat it here. Instead, I’ll post about a conference he did not, the 4th Extremely Large Databases Conference. I am particularly interested in any MySQL folks planning to attend (I would expect Tokutek to be represented, and maybe even the Calpont folks).

Most of this is directly from an e-mail I received from Jacek Becla, who had a keynote at the 2008 MySQL User Conference and Expo. If you also received

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ODTUG Kscope Wrap-up and Slides
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Ronald Bradford and I produced a successful MySQL track at Kaleidoscope (hereinafter referred to as Kscope). With a speaker list of Philip Antoniades, Josh Sled and Craig Sylvester of Oracle, Laine Campbell of PalominoDB, Patrick Galbraith of Northscale, Sarah Novotny of Blue Gecko, Padrig O’Sullivan of Akiba, Dossy Shiobara of Panoptic.com and Matt Yonkovic of Percona, we knew the technical content was going to be great.

As someone who’s helped organize

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MySQL’s SQL Deviations and Extensions
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Today at Kaleidoscope I will be doing a 90-minute session comparing MySQL’s SQL syntax to the ANSI/ISO SQL:2003 standard, entitled What Do You Mean, “SQL Syntax Error”?

You can download the PDF slides now.

For those that may be following along the presentation later today (4 pm Eastern time), here are some links that I may throw out during the session:

  • SQL 2003 standard – actually it is “Information taken from the Final Committee Draft (FCD) of ISO/IEC 9075-2:2003″ but it’s extremely close to the actual standard. The actual standard is a document that costs a non-trivial amount of money to get, and cannot be



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MySQL and Quoting
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MySQL does not follow the ANSI SQL standard for quoting. MySQL’s default quoting behavior is that either single or double quotes can be used to quote a string (this gets me into trouble when I work with Oracle databases, as double quotes do not indicate a string!).

mysql> SELECT 'alive';
+-------+
| alive |
+-------+
| alive |
+-------+
1 row in set (0.00 sec)

mysql> SELECT "alive";
+-------+
| alive |
+-------+
| alive |
+-------+
1 row in set (0.00 sec)

Bare words are dealt with in context; in this case, a bare word would be parsed as a column name:

mysql> SELECT alive;
ERROR 1054 (42S22): Unknown column 'alive' in 'field list'

Backquotes are the way MySQL escapes table names. So, if you want a reserved word, number or operator to be the name of an object (ie, a table named “1″ or a column named “date”)

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Log Buffer #192, A Carnival of The Vanities for DBAs
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It’s Friday, and summer’s here. While it seems the industry is slowing down to a lazy pace, there is still some action so let’s splash right in to this week’s edition of Log Buffer DBA industry news in Log Buffer #192.

Alex Gorbachev had a few minutes to suggest the following interesting tidbits to me before running off to attend Oracle ACE Director activities at ODTUG/Kaleidoscope this weekend. One of these days we’ll have to see if he can share some of what

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The MySQL Track at Kaleidoscope is set!
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The MySQL track at Kaleidoscope in Washington, DC during June 28-July 1st is set! Here is the schedule, Lincoln VI is the MySQL track room.

Ronald has done a super job and spent a ton of hours in the past several weeks coordinating this effort. Work has kept me much busier than normal, but I have lent some time to the coordination as well. It is a credit mostly to Ronald that we have been able to plan an entire 19-session conference track, complete with confirming speakers, in less than a month. (You may notice the schedule does not have all 19 sessions full, we are just waiting for some more speakers to confirm details.)

Whether or

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A Useful Tool to Centrally Manage Many MySQL Instances
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I have been talking with a group of folks who have been making a product that has lots of free functionality, including the ability to centrally manage many MySQL instances. The administration functions include starting and stopping MySQL, seeing status and system variables, seeing and managing the MySQL config file (/etc/my.cnf), seeing and managing accounts, a small dashboard of overall health graphs, and more.

With this free tool you can look at and manage local and remote databases. It supports ssh tunneling, including ssh using password-protected ssh keys. It’s pretty neat, and I have been working with the product manager to add features. I think this took will become the de facto standard for centralized GUI administration of MySQL.

The tool is
MySQL workbench….Surprise! One of the best new features for the

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10 Newer Entries Showing entries 31 to 40 of 143 10 Older Entries

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