10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a large database with English on the left hand side and Indic words on the left hand.
It so happens that since the Indic words have been entered by hand, there are duplicates in the entries.
The structure is as under:
English headword=Indic gloss,Indic gloss
A small sample will... (6 Replies)
Discussion started by: gimley
6 Replies
2. Shell Programming and Scripting
I would like to create the following script:
run a python script with setsid
python may or may not fail with exception
check if all of the group processes were terminated correctly
if not, kill the remaining processes
How can I do that?
Thanks a lot (3 Replies)
Discussion started by: ASF Studio
3 Replies
3. Gentoo
Hi,
since the upgrade to Gnome 3.6 (now i have 3.8) the authentication over LDAP stops working. The whole machine does not start anymore. The machine boot, but no gdm and no X. I can login, with root, but then the tty hangs. When i look at ttyF12 i see a lot of systemd service the runs random,... (1 Reply)
Discussion started by: darktux
1 Replies
4. SCO
I'm trying to virtualize an instance of SCO Open Server 5.0.2c in VirtualBox (called VM- A) , I can not configure the network (NIC).
The NIC I'm using is PCnet -FAST III (Am79C973 ) (this NIC works with VirtualBox + SCO 5.0.5M)
When I add from ' Add new LAN adapter' I detects the NIC... (2 Replies)
Discussion started by: flako
2 Replies
5. UNIX for Advanced & Expert Users
Hi,
Since a year my libvirtd does not work anymore on my Gentoodesktop. In the meantime a used virtualbox. But I would like to have back libvirt. The problem was after libvirt should not only work with root privileges. I deinstalled all things with libvirt an kvm. I removed all things from /var... (4 Replies)
Discussion started by: darktux
4 Replies
6. Programming
Hey everyone,
I'm trying to attach to a process that is crashing so I can debug the source code. I've tried this:
dbx -a PID
stop at "file.cpp":line#
However, nothing ever breaks. The service crashes and restarts, but I never see it hitting the code. I've tried to use a core file, but... (2 Replies)
Discussion started by: ctote
2 Replies
7. Programming
Hey everyone,
I have a process that is crashing, and I'd like to have some way to see where it crashes. Is this possible? (2 Replies)
Discussion started by: ctote
2 Replies
8. Shell Programming and Scripting
Hi all,
My script below was working fine till I changed the LOGFILE path (which originally points to a file within the same folder of the script for testing)
Only the event.log file path is changed, the rest are still within the current folder.
Before the change, running the script works.... (1 Reply)
Discussion started by: phixsius
1 Replies
9. Programming
If your program unfortunately takes a LONG time to finish running in dbx and you find yourself hitting Ctrl+C or Ctrl+Z to stop the running, does it produce any adverse effects at all ?
The reason I am asking is because my program is in an infinite loop state (which leads to the huge delay in... (1 Reply)
Discussion started by: JamesGoh
1 Replies
10. SuSE
I install vsftpd server on 2 SUSE 10.2 servers. The first works perfectly, but the second doesn't work how I expect. The second works only over local network and doesn't over internet. The vsftpd.conf and ../xinetd.d/vsftpd are the same in 2 servers. The only different was when I threw to log in... (1 Reply)
Discussion started by: zhivko.neychev
1 Replies
MYSQLDIFF(1) MySQL Utilities MYSQLDIFF(1)
NAME
mysqldiff - Identify differences among database objects
SYNOPSIS
mysqldiff [options] {db1[:db1] | db1.obj1[:db2.obj2]} ...
DESCRIPTION
This utility reads the definitions of objects and compares them using a diff-like method to determine whether they are the same. The util-
ity displays the differences for objects that are not the same.
Use the notation db1:db2 to name two databases to compare, or, alternatively just db1 to compare two databases with the same name. The
latter case is a convenience notation for comparing same-named databases on different servers.
The comparison may be run against two databases of different names on a single server by specifying only the --server1 option. The user can
also connect to another server by specifying the --server2 option. In this case, db1 is taken from server1 and db2 from server2.
When a database pair is specified, all objects in one database are compared to the corresponding objects in the other. Any objects not
appearing in either database produce an error.
To compare a specific pair of objects, add an object name to each database name in db.obj format. For example, use db1.obj1:db2.obj2 to
compare two named objects, or db1.obj1 to compare an object with the same name in databases with the same name. It is not legal to mix a
database name with an object name. For example, db1.obj1:db2 and db1:db2.obj2 are illegal.
The comparison may be run against a single server for comparing two databases of different names on the same server by specifying only the
--server1 option. Alternatively, you can also connect to another server by specifying the --server2 option. In this case, the first object
to compare is taken from server1 and the second from server2.
By default, the utilty generates object differences as a difference report. However, you can generate a transformation report containing
SQL statements for transforming the objects for conformity instead. Use the 'sql' value for the --difftype option to produce a listing
that contains the appropriate ALTER commands to conform the object definitions for the object pairs specified. If a transformation cannot
be formed, the utility reports the diff of the object along with a warning statement. See important limitations in the NOTES section.
To specify how to display diff-style output, use one of the following values with the --difftype option:
unified (default)
Display unified format output.
context
Display context format output.
differ Display differ-style format output.
sql Display SQL transformation statement output.
The --changes-for option controls the direction of the difference (by specifying the object to be transformed) in either the difference
report (default) or the transformation report (designated with the --difftype=sql option). Consider the following command:
mysqldiff --server1=root@host1 --server2=root@host2 --difftype=sql
db1.table1:dbx.table3
The leftmost database (db1) exists on the server designated by the --server1 option (host1). The rightmost database (dbx) exists on the
server designated by the --server2 option (host2).
o --changes-for=server1: Produce output that shows how to make the definitions of objects on server1 like the definitions of the corre-
sponding objects on server2.
o --changes-for=server2: Produce output that shows how to make the definitions of objects on server2 like the definitions of the corre-
sponding objects on server1.
The default direction is server1.
For sql difference format, you can also see the reverse transformation by specifying the --show-reverse option.
The utility stops on the first occurrence of missing objects or when an object does not match. To override this behavior, specify the
--force option to cause the utility to attempt to compare all objects listed as arguments.
OPTIONS
mysqldiff accepts the following command-line options:
--help Display a help message and exit.
--changes-for=<direction>
Specify the server to show transformations to match the other server. For example, to see the transformation for transforming object
definitions on server1 to match the corresponding definitions on server2, use --changes-for=server1. Permitted values are server1
and server2. The default is server1.
--difftype=<difftype>, -d<difftype>
Specify the difference display format. Permitted format values are unified, context, differ, and sql. The default is unified.
--force
Do not halt at the first difference found. Process all objects to find all differences.
--quiet, -q
Do not print anything. Return only an exit code of success or failure.
--server1=<source>
Connection information for the first server in <user>[:<passwd>]@<host>[:<port>][:<socket>] format.
--server2=<source>
Connection information for the second server in <user>[:<passwd>]@<host>[:<port>][:<socket>] format.
--show-reverse
Produce a transformation report containing the SQL statements to conform the object definitions specified in reverse. For example,
if --changes-for is set to server1, also generate the transformation for server2. Note: The reverse changes are annotated and marked
as comments.
--verbose, -v
Specify how much information to display. Use this option multiple times to increase the amount of information. For example, -v =
verbose, -vv = more verbose, -vvv = debug.
--version
Display version information and exit.
--width=<number>
Change the display width of the test report. The default is 75 characters.
NOTES
You must provide connection parameters (user, host, password, and so forth) for an account that has the appropriate privileges to access
all objects to be compared.
The SQL transformation feature has these known limitations:
o When tables with partition differences are encountered, the utility generates the ALTER TABLE statement for all other changes but prints
a warning and omits the partition differences.
o If the transformation detects table options in the source table (specified with the --changes-for option) that are not changed or do not
exist in the target table, the utility generates the ALTER TABLE statement for all other changes but prints a warning and omits the table
option differences.
o Rename for events is not supported. This is because mysqldiff compares objects by name. In this case, depending on the direction of the
diff, the event is identified as needing to be added or a DROP EVENT statement is generated.
o Changes in the definer clause for events are not supported.
o SQL extensions specific to MySQL Cluster are not supported.
For the --difftype option, the permitted values are not case sensitive. In addition, values may be specified as any unambiguous prefix of a
valid value. For example, --difftype=d specifies the differ type. An error occurs if a prefix matches more than one valid value.
EXAMPLES
To compare the employees and emp databases on the local server, use this command:
$ mysqldiff --server1=root@localhost employees:emp1
# server1 on localhost: ... connected.
WARNING: Objects in server1:employees but not in server2:emp1:
EVENT: e1
Compare failed. One or more differences found.
$ mysqldiff --server1=root@localhost
employees.t1:emp1.t1 employees.t3:emp1.t3
# server1 on localhost: ... connected.
# Comparing employees.t1 to emp1.t1 [PASS]
# server1 on localhost: ... connected.
# Comparing employees.t3 to emp1.t3 [PASS]
Success. All objects are the same.
$ mysqldiff --server1=root@localhost
employees.salaries:emp1.salaries --differ
# server1 on localhost: ... connected.
# Comparing employees.salaries to emp1.salaries [FAIL]
# Object definitions are not the same:
CREATE TABLE `salaries` (
`emp_no` int(11) NOT NULL,
`salary` int(11) NOT NULL,
`from_date` date NOT NULL,
`to_date` date NOT NULL,
PRIMARY KEY (`emp_no`,`from_date`),
KEY `emp_no` (`emp_no`)
- ) ENGINE=InnoDB DEFAULT CHARSET=latin1
? ^^^^^
+ ) ENGINE=MyISAM DEFAULT CHARSET=latin1
? ++ ^^^
Compare failed. One or more differences found.
The following examples show how to generate a transformation report. Assume the following object definitions:
Host1:
CREATE TABLE db1.table1 (num int, misc char(30));
Host2:
CREATE TABLE dbx.table3 (num int, notes char(30), misc char(55));
To generate a set of SQL statements that transform the definition of db1.table1 to dbx.table3, use this command:
$ mysqldiff --server1=root@host1 --server2=root@host2
--changes-for=server1 --difftype=sql
db1.table1:dbx.table3
# server1 on host1: ... connected.
# server2 on host2: ... connected.
# Comparing db1.table1 to dbx.table3 [FAIL]
# Transformation statments:
ALTER TABLE db1.table1
ADD COLUMN notes char(30) AFTER a,
CHANGE COLUMN misc misc char(55);
Compare failed. One or more differences found.
To generate a set of SQL statements that transform the definition of dbx.table3 to db1.table1, use this command:
$ mysqldiff --server1=root@host1 --server2=root@host2
--changes-for=server2 --difftype=sql
db1.table1:dbx.table3
# server1 on host1: ... connected.
# server2 on host2: ... connected.
# Comparing db1.table1 to dbx.table3 [FAIL]
# Transformation statments:
ALTER TABLE dbx.table3
DROP COLUMN notes,
CHANGE COLUMN misc misc char(30);
Compare failed. One or more differences found.
To generate a set of SQL statements that transform the definitions of dbx.table3 and db1.table1 in both directions, use this command:
$ mysqldiff --server1=root@host1 --server2=root@host2
--show-reverse --difftype=sql
db1.table1:dbx.table3
# server1 on host1: ... connected.
# server2 on host2: ... connected.
# Comparing db1.table1 to dbx.table3 [FAIL]
# Transformation statments:
# --destination=server1:
ALTER TABLE db1.table1
ADD COLUMN notes char(30) AFTER a,
CHANGE COLUMN misc misc char(55);
# --destination=server2:
# ALTER TABLE dbx.table3
# DROP COLUMN notes,
# CHANGE COLUMN misc misc char(30);
Compare failed. One or more differences found.
COPYRIGHT
Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
AUTHOR
MySQL Utilities Team
COPYRIGHT
2010, Oracle and/or its affiliates. All rights reserved.
1.0.3 May 09, 2012 MYSQLDIFF(1)