You said
which eliminates user4 and user5. Don't use HAVING clause if you don't need it.
mmmm, I believe this is not the right way. This because otherwise the query output all the users, but I need only users with the same IP (so, count greater than 1)
hi all
i am new in unix programming i want some help from this forum, i want to know how to get user name of other machine in local network from its ip address or suggest any books for networking programming on unix
sachin (6 Replies)
Greets all,
I'm using Perl trying to insert an IP address from a log file into an INT field in a MYSQL table. So it needs to be converted into an int first. I thought the pack() function could do this for me, but I'm not sure I get the right thing. I also need to be able to extract it correctly... (3 Replies)
hi all,
I have 4 scripts which i would need to run
1. BP.sh
2.DB.sh
3.LK.sh
4.TB.sh
I would like write a script which would ask the user to select a number from 1-4 accordingly and run only that script for him/her
I succeeded till reading the user input but not sure how to run that... (5 Replies)
Hi,
I'm brand new here and looking for a solution:
I'm using mail or mailx. The default reply address is «myshortusername@mylongusername.local» which makes absolutely no sense for anybody receiving my emails.
But how do I change it? There seem to be many solutions but none for Mac OS X.... (0 Replies)
:) Firstly Hi all!!, im NEW!! and on here hoping that someone might be able to offer me some help... i have a server that keeps crashing every few days with the error message:
PANIC KERNAL-MODE ADDRESS FAULT ON USER ADDRESS 0X14
KERNAL PAGE FAULT FROM (CS:EIP)=(100:EF71B5BD)
EAX=EF822000... (10 Replies)
Hello there.
I've got the query like that
SELECT count(tour_id) AS cnt
FROM orders
JOIN tours
ON orders.tour_id=tours.id
GROUP BY tour_id
The result Is
cnt
1
4
2
1
1
Now i have to select all records with minimum values in field "cnt"
MySQL function min() returns only one.... (2 Replies)
Hi there,
I have trouble selecting record that contain one biggest value for a group of other values. I mean, this is my table:
mysql> SELECT * FROM b;
+----+------+-------+
| id | user | value |
+----+------+-------+
| 1 | 1 | 100 |
| 3 | 1 | 150 |
| 5 | 1 | 300 |
| 6... (20 Replies)
i have a table
records
------------
id | user | time | event
91 admin | 12:00 | hi
92 admin | 11:00 | hi
93 admin | 12:00 | bye
94 admin | 13:00 | bye
95 root | 12:00 | hi
96 root | 12:30 | hi
97 root | 12:56 | hi
how could i only select and display only the user and event from... (6 Replies)
hi..
i need to optimize my select query ..
my situation is like this ..
i have 15 lac recors in my table..
the following query takes nine seconds to give the required output..
SELECT max(ah.AUC_AMT),
SUBSTRING_INDEX(GROUP_CONCAT(SUBSTRING_INDEX(ah.AUC_CUS_NAME,'@',1) order by AUC_AMT... (0 Replies)
hi..
i need to optimize my select query ..
my situation is like this ..
i have 15 lac recors in my table..
the following query takes nine seconds to give the required output..
SELECT max(ah.AUC_AMT),
SUBSTRING_INDEX(GROUP_CONCAT(SUBSTRING_INDEX(ah.AUC_CUS_NAME,'@',1) order by AUC_AMT... (1 Reply)
Discussion started by: senkerth
1 Replies
LEARN ABOUT DEBIAN
grass-mysql
grass-mysql(1grass) Grass User's Manual grass-mysql(1grass)NAME
grass-mysql - MySQL driver
MySQL driver MySQL driver in GRASS MySQL database driver in GRASS enables GRASS to store vector attributes in MySQL server.
Because vector attribute tables are created automaticaly when a new vector is written and the name of the table is the same as the name of
the vector it is good practice to create a new database for each GRASS mapset.
Creating a MySQL database
A new database is created within MySQL:
mysql> CREATE DATABASE mydb;
See the MySQL manual for details.
Driver and database name
GRASS modules require 2 parameters to connect to a database. Those parameters are 'driver' and 'database'. For MySQL driver the parameter
'driver' should be set to value 'mysql'. The parameter 'database' can be given in two formats:
Database name - in case of connection from localhost
String of comma separated list of kye=value options. Supported options are:
dbname - database name
host - host name or IP address
port - server port number
Examples of connection parameters:
db.connect driver=mysql database=mytest
db.connect driver=mysql database='dbname=mytest,host=test.grass.org'
Data types
GRASS supports almost all MySQL data types with following limitations:
Binary columns (BINARY, VARBINARY, TINYBLOB, MEDIUMBLOB, BLOB, LONGBLOB) are not not supported. If a table with binary col-
umn(s) is used in GRASS a warning is printed and only the supported columns are returned in query results.
Columns of type SET and ENUM are represented as string (VARCHAR).
Very large integers in columns of type BIGINT can be lost or corrupted because GRASS does not support 64 bin integeres on
most platforms.
GRASS does not currently distinguish types TIMESTAMP and DATETIME. Both types are in GRASS interpreted as TIMESTAMP.
Indexes
GRASS modules automaticaly create index on key column of vector attributes table. The index on key column is important for performance of
modules which update the attribute table, for example v.to.db, v.distance and v.what.rast.
Privileges
Because MySQL does not support groups of users and because only MySQL 'root' can grant privileges to other users GRASS cannot automaticaly
grant select privileges on created tables to group of users.
If you want to give privilege to read data from your mapset to other users you have to ask your MySQL server administrator to grant select
privilege to them on the MySQL database used for that mapset. For example, to allow everybody to read data in from your database 'mydb':
shell> mysql --user=root mysql
mysql> GRANT SELECT ON mydb.* TO ''@'%';
Schemas
Because MySQL does not support database schemas the parameter 'schema' of module db.connect should never be set to any value. If you set
that parameter for MySQL driver GRASS will try to write tables to the specified schema which will result in errors.
Groups
MySQL does not support user groups. Any settings specified by 'group' parameter of module db.connect are ignored by GRASS for MySQL driver.
SEE ALSO
db.connect, SQL support in GRASS GIS
Credits
Development of the driver was sponsored by Faunalia (Italy) as part of a project for ATAC.
AUTHOR
Radim Blazek
Last changed: $Date: 2011-02-07 18:59:50 +0100 (Mon, 07 Feb 2011) $
Help Index
GRASS 6.4.2grass-mysql(1grass)