I'm wondering if there is a utility that exists to create a data dictionary for a MySQL database.
I'm considering just writing a php script that fetches the meta data about the database and displays it in a logical format for users to understand but I'd rather avoid that if there is some pre-built utility out there that can simply do this for me.
Have you looked into HeidiSQL or phpMyAdmin?
Also, MySQL Admin.
Edit#1 fixed typo, added more info
Take a look at https://stackoverflow.com/a/26703098/4208132
There is a db_doc.lua plugin for MySQL Workbench CE
[EDITED]
It seems that the LUA plugin support was discontinued.
So I wrote a plugin in Python to generate data dictionaries.
It is available at: https://github.com/rsn86/MWB-DBDocPy
Looks like MySQL Admin is now MySQL Workbench and you need the Enterprise version to get their reporting tool called DBDoc. It explains a little about customizing DBDoc reporting templates at http://dev.mysql.com/doc/workbench/en/dbdoc-templates.html
The easiest thing to do is Download Toad for MySQL, which is free, and create your own query against the mysql information_schema internal database. You can add columns you want to the query below. Then select all results and export as csv using TOAD.
use information_schema;
desc columns;
select c.table_name, c.column_name, c.data_type from columns c
where c.table_schema = "mydatabaseinstance";
Related
So basically I have a joomla database in MySQL which has a bunch of tables that have the prefix 'jmla_'. I would like to rename all of these tables by replacing the 'jmla_' prefix with a 'jos_' prefix. Any ideas about how to do this with a simple SQL script or SQL query?
SELECT concat ('rename table ',table_name,' to ',table_name,'_old;')
FROM information_schema.tables
WHERE table_name like 'webform%'
and table_schema='weiss_db_new'
will work.
Run this statement:
SELECT 'rename table '||table_name||' to '||'jos'||substr(table_name,5)||';'
FROM information_schema.tables
WHERE table_name like 'jmla%'
This creates a script that will rename all the tables. Just copy & paste the output into your SQL client.
(You will need to change the || to MySQL's non-standard concatenation operator in case you are not running it in ANSI mode)
RENAME TABLE jmla_whatever to jos_whatever;
You'll have to write a script to cover all your tables - you can populate your script with the output of show tables. See http://dev.mysql.com/doc/refman/5.0/en/rename-table.html for details.
Export using phpmyadmin to .sql file
Use any text editor (I prefer vim, work excellent on large files) with function "find and replace" to open file
Do "find and replace", putting your actual prefix in find box, and updated in replace box
Import file using phpmyadmin.
Remember to drop old database before importing by phpmyadmin. This may be done, checking suitable options during export.
Have you considered using Akeeba Admin Tools Component for Joomla! and then using the Database Prefix Editor to change table prefixes, works really well. Akeeba Admin tools can be used to secure your Joomla! installation
Akeeba can be obtained here
I have 2 db files la.db and lb.db. I want a single db file, like final.db which would combine both la.db and lb.db databases. I am using sql lite.
Can anybody help me?
yes, you can use some native client in Ubuntu or similar for other Os, export them in a sql dump and reimport in a new one, OR you can simply write a small routine / program in c# that uses sqlite implicit, and select + insert and manage exception...
it depends on what data type you have into the sqlite.
I would like to know how I can move date from Hive to MySQL?
I have seen example on how to move hive data to Amazon DynamoDB but not for a RDBMS like MySQL. Here is the example that I saw with DynamoDB:
CREATE EXTERNAL TABLE tbl1 ( name string, location string )
STORED BY 'org.apache.hadoop.hive.dynamodb.DynamoDBStorageHandler'
TBLPROPERTIES ("dynamodb.table.name" = "table",
"dynamodb.column.mapping" = "name:name,location:location") ;
I would like to do the same but with MySQL instead. I wonder if I need to code my own StorageHandler? I also to do not want to use sqoop. I want to be able to do my query directly in my HiveQL script.
You'd currently need a JDBC StorageHandler, which one has not been created just yet, but you could certain build your own.
There is currently an issue report for this which you can follow here:
https://issues.apache.org/jira/browse/HIVE-1555
Have you tried using Sqoop?. Its a good tool to do such kind of stuff.
There are many options. You can download the files in hive as csv file and then try bulk insert into mysql tables. You can use Sqoop. Or you can use some of the popular ETL tools like
Pentaho and many others.
So basically I have a joomla database in MySQL which has a bunch of tables that have the prefix 'jmla_'. I would like to rename all of these tables by replacing the 'jmla_' prefix with a 'jos_' prefix. Any ideas about how to do this with a simple SQL script or SQL query?
SELECT concat ('rename table ',table_name,' to ',table_name,'_old;')
FROM information_schema.tables
WHERE table_name like 'webform%'
and table_schema='weiss_db_new'
will work.
Run this statement:
SELECT 'rename table '||table_name||' to '||'jos'||substr(table_name,5)||';'
FROM information_schema.tables
WHERE table_name like 'jmla%'
This creates a script that will rename all the tables. Just copy & paste the output into your SQL client.
(You will need to change the || to MySQL's non-standard concatenation operator in case you are not running it in ANSI mode)
RENAME TABLE jmla_whatever to jos_whatever;
You'll have to write a script to cover all your tables - you can populate your script with the output of show tables. See http://dev.mysql.com/doc/refman/5.0/en/rename-table.html for details.
Export using phpmyadmin to .sql file
Use any text editor (I prefer vim, work excellent on large files) with function "find and replace" to open file
Do "find and replace", putting your actual prefix in find box, and updated in replace box
Import file using phpmyadmin.
Remember to drop old database before importing by phpmyadmin. This may be done, checking suitable options during export.
Have you considered using Akeeba Admin Tools Component for Joomla! and then using the Database Prefix Editor to change table prefixes, works really well. Akeeba Admin tools can be used to secure your Joomla! installation
Akeeba can be obtained here
Was wondering if anyone had any insight or recommended tools for exporting the records from a PostgreSQL database and importing them into a MySQL database. I believe the table structure is 100% identical.
Thoughts? Thanks!
The command
pg_dump --data-only --column-inserts <database_name>
will generate SQL-standard-compliant INSERT statements with all column names listed and one VALUES clause per INSERT. This is the most portable way of moving data from PostgreSQL to any other SQL database.
Check out SquirrelSQL, it can pump data from one database brand into another via the DBCopy plugin. When the table structures are really identical it works quite well.
There is a ruby app called Taps that will do it. I've used it before with great success:
http://adam.heroku.com/past/2009/2/11/taps_for_easy_database_transfers/