ALTER TABLE Performance with MyISAM


 
Thread Tools Search this Thread
Operating Systems Solaris Solaris BigAdmin RSS ALTER TABLE Performance with MyISAM
# 1  
Old 02-17-2009
ALTER TABLE Performance with MyISAM

Discusses an issue with adding a column to a table that has over 3 million rows and the performance of such additions.

More...
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. UNIX and Linux Applications

SQL - how to alter info of a cell in table

Hello, I am newbie on mysql and trying to edit my database from terminal under linux. What I need to do is to change the information written in a cell in table. Let me explain what I tried: $ mysql -u mysqluser -p $ show databases; $ USE catalogue; $ show tables ; $ select * from... (2 Replies)
Discussion started by: baris35
2 Replies

2. UNIX for Dummies Questions & Answers

alter data in a file

Hi , I have data in file like below. status ----------- ------ 2287 C 1502 E 19 can anyone pls help me how can i get it modified as below status 2287|C|1502 E|19 can someone pls help. Thanks. (2 Replies)
Discussion started by: gaddamja
2 Replies

3. Linux

Routing table vulnerability comparison between two versions and analysis of performance in a scenari

Hi Routing tables in a typical linux kernel are implemented using hash data structures. So if the hash table is forced to behave more like a linked list(i.e create chaining) the purpose of using hash is defeated and time complexity increases. I want to try to assess the performance deterioration... (0 Replies)
Discussion started by: coolvaibhav
0 Replies

4. Shell Programming and Scripting

Alter file descriptor for stdout

Is there a way to alter the file descriptor for stdout.? sample: #!/bin/ksh exec 1>file exec 2>file echo hi --------->This will go to file print -u4 "come statement"---->I want to make the file descriptor 4 to point to stdout. The reason is ,I have a script which has lot of db2... (1 Reply)
Discussion started by: prasperl
1 Replies

5. UNIX for Dummies Questions & Answers

alter data in column

Hello All, I want to alter the first column of a dataset, say, 001 0.700 100.000 002 0.715 99.998 003 0.730 99.998 004 0.744 99.975 005 0.759 99.916 011 0.847 97.987 012 0.861 97.317 020 0.978 87.789 021 0.993 86.400 022 1.008 84.904 023 1.022 83.014 100 2.148 11.426 101... (2 Replies)
Discussion started by: tintin72
2 Replies

6. Shell Programming and Scripting

File Alter Problem--need help

i have 3 files a.txt , b.txt and c.txt each files have keyfields and some column fields e.g. a.txt keyfield1 keyfield2 keyfield3 col1 col2 col3 1 2 3 44 55 66 4 5 6 92 48 33 .....................etc.................. b.txt keyfield1... (2 Replies)
Discussion started by: manas_ranjan
2 Replies

7. AIX

Can't alter bootlist

Made a sysback tape backup on our 595 running 4.1.5 but when trying to do a restore discovered that rmt0 not in bootlist(s). Tried to alter both the normal and service bootlists but system wont respond to F7(commit). Erased the service boolist then tried alter again, same result. Now have... (2 Replies)
Discussion started by: mooshkie
2 Replies

8. Shell Programming and Scripting

Alter Table Shell Script

I want to add some columns to a existing tables through a shell script. Please help. (2 Replies)
Discussion started by: ankitgupta
2 Replies
Login or Register to Ask a Question
ALTER 
VIEW(7) SQL Commands ALTER VIEW(7) NAME
ALTER VIEW - change the definition of a view SYNOPSIS
ALTER VIEW name ALTER [ COLUMN ] column SET DEFAULT expression ALTER VIEW name ALTER [ COLUMN ] column DROP DEFAULT ALTER VIEW name OWNER TO new_owner ALTER VIEW name RENAME TO new_name ALTER VIEW name SET SCHEMA new_schema DESCRIPTION
ALTER VIEW changes various auxiliary properties of a view. (If you want to modify the view's defining query, use CREATE OR REPLACE VIEW.) You must own the view to use ALTER VIEW. To change a view's schema, you must also have CREATE privilege on the new schema. To alter the owner, you must also be a direct or indirect member of the new owning role, and that role must have CREATE privilege on the view's schema. (These restrictions enforce that altering the owner doesn't do anything you couldn't do by dropping and recreating the view. However, a superuser can alter ownership of any view anyway.) PARAMETERS
name The name (optionally schema-qualified) of an existing view. SET/DROP DEFAULT These forms set or remove the default value for a column. A default value associated with a view column is inserted into INSERT statements on the view before the view's ON INSERT rule is applied, if the INSERT does not specify a value for the column. new_owner The user name of the new owner of the view. new_name The new name for the view. new_schema The new schema for the view. NOTES
For historical reasons, ALTER TABLE can be used with views too; but the only variants of ALTER TABLE that are allowed with views are equiv- alent to the ones shown above. EXAMPLES
To rename the view foo to bar: ALTER VIEW foo RENAME TO bar; COMPATIBILITY
ALTER VIEW is a PostgreSQL extension of the SQL standard. SEE ALSO
CREATE VIEW [create_view(7)], DROP VIEW [drop_view(7)] SQL - Language Statements 2010-05-14 ALTER VIEW(7)