where is the index physically located in MySQL database?
Let’s learn where is the index physically located in MySQL database. The most accurate or helpful solution is served by Database Administrators.
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Just wondering where is the index info physically located in MySQL database if I have indexed a table with ALTER TABLE contacts ADD KEY (columnName); ? it will stay with that table and add a new spacial column to it; stay separately from that table; I think the #2 is the correct answer. Can we index columns from more than one tables? how?
Answer:
(This question might better be asked on dba.stackexchange.com) But to answer your questions: For the...
5YrsLaterDBA at Database Administrators Mark as irrelevant Undo
Other solutions
Hi guys, I have designed a very simple guestbook using a mysql database and php to link to my website but am having problems getting it going. Am fairly new to this kind of programming so I am sure its something simple ..... Basically ..... I have a...
Answer:
The code should work (I believe) so perhaps you have the wrong name of the database? I would suggest...
Yiaggi at Yahoo! Answers Mark as irrelevant Undo
I work on large database (hundreds of GB) and Mysql now gives me more or less satisfaction. I hesitate to cassandra on launch. What I want to know everything before, so this kind of DBMS NoSQL is supposed to be faster than MySQL? Several points: The...
Answer:
See this related topic on some of the NoSQL solutions - What are each of these solutions best fit for...
Raghavendra Kidiyoor at Quora Mark as irrelevant Undo
I have been trying and failing, to code a twitter bot that tweets lines held in a MYSQL database, one by one, in order. I have a DATABASE with two tables: 1. tweetstable - holds a lot of tweets (tweetsfield) and an id column (id) 2. last_row - holds...
Answer:
Fatal error: Call to a member function where() on a non-object in /LOCATION/index.php on line 13 means...
Adam Marshall at Quora Mark as irrelevant Undo
Hi all, Need help on deciding Index for my database table. so here are the details. I have a table Source which have 10 million records and growing. Now the web application has search functionality. the user on web application can search for sources...
Answer:
The purpose of an R-tree index is primarily for indexing multi-dimensional data like points and regions...
Bill Karwin at Quora Mark as irrelevant Undo
Please let me know whether is it possible to connect a MYSQL db which is located in Windows Server 2003 Microsoft-IIS/6.0 from a Linux Apache/1.3.37 (Unix) server. FYI, the mysql db connection file is in LINUX Apache server and the mysql database is...
Answer:
make sure the mysql server is configured to allow connections from other computers, and that any firewals...
Mahesh at Yahoo! Answers Mark as irrelevant Undo
So, I have a database in MySql, and i want to use the database in a java application. I dont know how to connect the two. The database in Sql is called "restaurants" I've tried the following code: Connection con = null; try { Class.forName...
Answer:
You must download the MySQL driver that will connect you with the DB by means of JDBC. Use this to connect...
mayi o at Yahoo! Answers Mark as irrelevant Undo
We recently converted our database from MyISAM to InnoDB. Now, when looking at some EXPLAINs, the optimizer chooses to use Key: PRIMARY, instead of the better-performing secondary index it was using in MyISAM. How long, if ever, will it take MySQL to...
Answer:
It's not necessarily going to be better-performing to use a secondary index over PRIMARY in InnoDB,...
Bill Karwin at Quora Mark as irrelevant Undo
I am not interested in a collection of links to sites that offer all sorts of explanations of all the command line switches for doing this (I could find these myself). I want a researcher who knows the answer with confidence to respond to this question...
Answer:
Hello, I manage a couple forums in MySQL which have different tables & data which need to be backed...
mork-ga at Google Answers Mark as irrelevant Undo
I'm currently retro-fitting an InnoDB-based MySQL table with GUIDs. In the short-term, I'll be assigning each existing record a GUID and indexing on it (in the long-term, I'll be migrating to a K-V store). I have two optimizations in mind, and I'm wondering...
Answer:
Regarding option #1: I don't understand how that would help. The B-tree data structure stores the least...
Bill Karwin at Quora Mark as irrelevant Undo
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