08-24-2013
Yes, I was contemplating the export and then an import also. I see that more of a last resort option, because it involves writing to a file together with all its shortcomings.
The other solution we are investigating is through the use of cursors. This looks roughly as follows:
- create a list of all tables in the schema
- loop through these tables to create a list of all columns per table which are not keys
- loop through these columns to pick up rows where all values are NULL
Disadvantage here is that it requires the use of a procedural language as well as being less portable to other database systems.
Are you saying it is impossible to do entirely within MySQL in (possibly nested) SQL statements?
8 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
I want to collect the database tables(Ex: Emp,Sal,Bonus...etc)
in a file & give this file at the command prompt, when prompted for the tables list at command prompt. How can i do that ?
Ex:- Import jason/jason1 tables=emp,sal,bonus log=j1.log
i want to change this into
Ex:- Import... (3 Replies)
Discussion started by: dreams5617
3 Replies
2. Shell Programming and Scripting
Hi all, i would like to set a cronjob to back up my db tables.
I have written the par file, i would like to know how can i execute a exp command in a shell script.
my par file userid=admin/password
file=backup.dmp
log=backupLOG.log
tables=
(Tables 1,
Tables 2)My cron job script will be... (1 Reply)
Discussion started by: new2ss
1 Replies
3. Shell Programming and Scripting
I am coding shell script.
I need to connect to different databases like DB2, Oracle and Sybase.
I would then need to query tables where it has all the groups, users for that database.
I would also need who has what kind of permissions.
EG: I know for DB2 some TABAUTH table needs to be... (0 Replies)
Discussion started by: pinnacle
0 Replies
4. Programming
I'm pretty new to the database world and I've run into a mental block of sorts. I've been unable to find the answer anywhere. Here's my problem: I have several tables and everything is as normalized as possible (as I've been lead to understand normalization.) Normalization has lead to some... (1 Reply)
Discussion started by: flakblas
1 Replies
5. Shell Programming and Scripting
Hi all,
I am executing shell script in which I am using SQLLDR
In this SQLLDR I am passing text file having PL/SQL script. This script will produce some formated output, this output I have to spool in another text file. Currently I have given this in script file as following
Spool... (2 Replies)
Discussion started by: shekharjchandra
2 Replies
6. Programming
Hi,
I have 2 tables.
Table1
name map_code data_code id
aaa 2732C 3333B 10
bbb 1223F 2545v 11
ccc 12
Table2
name map_code data_code id text_description
aaa 2732C 3333B 10 description 1
bbb 1223F 2545v 11 ... (3 Replies)
Discussion started by: vanitham
3 Replies
7. Shell Programming and Scripting
I haven't coded in ksh in forever and this script is proving me not a great coder. I keep getting unexpected end of file when I try to execute this...Line 94 is the last line of the code..
#!/usr/bin/ksh
. /home/oraprod/.bash_profile
DBSID=prod # Database sid
CONNECTSTR=apps/xxxxxxxx@prod #... (6 Replies)
Discussion started by: kirkladb
6 Replies
8. UNIX for Advanced & Expert Users
Hi,
Please let me know if you have any thoughts on how to read a table that has all the oracle sql files or shell scripts at the job and step level to identify all the tables that does merge, update, delete, insert, create, truncate, alter table (ALTER TABLE XYZ RENAME TO ABC) and call them out... (1 Reply)
Discussion started by: techmoris
1 Replies
LEARN ABOUT DEBIAN
mysql::diff::database
MySQL::Diff::Database(3pm) User Contributed Perl Documentation MySQL::Diff::Database(3pm)
NAME
MySQL::Diff::Database - Database Definition Class
SYNOPSIS
use MySQL::Diff::Database;
my $db = MySQL::Diff::Database->new(%options);
my $source = $db->source_type();
my $summary = $db->summary();
my $name = $db->name();
my @tables = $db->tables();
my $table_def = $db->table_by_name($table);
my @dbs = MySQL::Diff::Database::available_dbs();
DESCRIPTION
Parses a database definition into component parts.
METHODS
Constructor
new( %options )
Instantiate the objects, providing the command line options for database access and process requirements.
Public Methods
o source_type()
Returns 'file' if the data source is a text file, and 'db' if connected directly to a database.
o summary()
Provides a summary of the database.
o name()
Returns the name of the database.
o tables()
Returns a list of tables for the current database.
o table_by_name( $name )
Returns the table definition (see MySQL::Diff::Table) for the given table.
FUNCTIONS
Public Functions
o available_dbs()
Returns a list of the available databases.
Note that is used as a function call, not a method call.
COPYRIGHT AND LICENSE
Copyright (c) 2000-2011 Adam Spiers. All rights reserved. This program is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.
SEE ALSO
mysqldiff, MySQL::Diff, MySQL::Diff::Table, MySQL::Diff::Utils
AUTHOR
Adam Spiers <mysqldiff@adamspiers.org>
perl v5.14.2 2012-04-06 MySQL::Diff::Database(3pm)