AgensGraph is installed and used on my other servers.
Well, I am using PostgreSQL on one server.
I would like to change that server to AgensGraph, which has a lot of data stored there.
So can I do data migration to AgensGraph like using pg_dump?
Or is there another way for task?
Yes, you can use pg_dump and also you can use FDW extension to migrate your data into AgensGraph . Example
Related
I am writing a web in Python, I would like to save or update oracle synonyms as select * from synonyms into local database, so the local python program can use those values at regular intervals, I was trapped, is there anyone who tell some ideas? Thanks so much!
You should either fetch that data, as mentioned in another answer, or make your backend write the data part of the vue script, probably using a template engine, when rendering the page.
I need to create a connection between ##MongoDB## and ##SQL Server## where I want to replicate a subset of my Database from SQL Server into MongoDB. Can anyone suggest for feasibility of the same and how ?
Right now I am using symmetricDS for the replication but unable to...
Please suggest if symmetricDS is able to serve for this purpose.
Here is how you target MongoDB:
http://www.symmetricds.org/doc/3.8/html/user-guide.html#_mongodb
If you need more flexibility than straight table to table mapping, then you would write your own data loader using the MongoDatabaseWriter as a pattern.
https://github.com/JumpMind/symmetric-ds/tree/0c5cc1c24b42a64405f4b79c3cb6b594a35467f2/symmetric-client/src/main/java/org/jumpmind/symmetric/io
Got an easy way around for the Data Exchange from SQL to MongoDB using:
SQLtoMongo C# Tool
KNIME Analytics Platform (way easy to implement - Opensource)
But still looking for something with triggers to easily replicate the things.
In my use case, I am trying to migrate SQL based traditional data warehousing application into big data infrastructure. I chose Hive and i think it is doing well. However, what I could not find is that stored procedures. Is it available in hive? I am using apache Hue to write and execute Hive query.
No, Stored Procedures are not yet available. However, there are plans to be available in the future.
Please refer to HPL/SQL, I am looking for same solution but not try yet.
I have the following scenario - Our desktop application talks to a SQL Server on another machine. We are using Nhibernate 2.1.2. Now, we want to use SQLite on client machine to store data which could not be uploaded. For example, if Order table has not been updated on SQL Server, we want to save it to SQLite. And, then later try to upload to SQL Server. So, we are thinking to use Nhibernate for storing data in SQLite. How do I configure NHibernate to achieve this?
thanks
You will need to create a whole new session/session source. NHibernate can not simply switch contexts with the push of a button. Best bet is to spin up a separate repository and session that point at that specific second database.
Oftentimes I want to query my MySQL data directly without a server running or without having access to the server (but having read / write rights to the files).
Is there a tool or maybe even a library around to query MySQL data files like it is possible with SQLite? I'm specifically looking for InnoDB and MyISAM support. Performance is not a factor.
I don't have any knowledge about MySQL internals, but I presume it should be possible to do and not too hard to get the specific code out?
Thank you for any suggestions!
MySQL offers a client library which is basically a miniature server. It's called libmysqld. It is C/C++ only, though. According to the docs, it exports an identical API to the normal C/C++ client library.
MySQL Embedded client library
I assume you are doing testing/dev work and dont want to run a server.
I had to do this a while ago, and the best I came up with is exporting it to SQL and loading that into memory:
mysqldump -u root -pPASSWORD DATABASENAME TABLENAME > table.sql
HSQLDB is an in-memory relational database for java, you could run the queries into that, do the modification you need and then re-export the .sql file. Bit of a roundabout way of doing it...