Say I have an index on (a, b, c) and I perform CLUSTER on that index. How exactly will the data be stored? I would assume it's something like this (just guessing): first sort by a, then by b, then by c. For example: (a, b, c) --------- (1, 1, 1) (1, 1, 2) (1, 2, 5) (2, 1, 4) (3, 1, 1) That means, if I want to have it ordered by b firs...
Hi All ,, Is there any way to get the get the specific values from date such as year , month , day . Actually we have in php date function . If we give date (Y-m ) ; it will give us 2010-07 . I want like this in postgres(psql) . Thanks in Advance... ...
I have a script in PostgreSQL which restores test database from dump every night. The database is accessed by app servers and processes with connection pool which keeps a few connections alive at all times. So the script restores dump into my_temp_database. Then it should rename my_database to my_old_database, my_temp_database to my_dat...
Well, what i've already done - is i'm able to connect to access mdb table via Microsoft.Jet.OLEDB provider, then i can get a data from table, using select query, OleDbDataAdapter and a DataSet. Now, i'm able to connect to Postgresql via Npgsql, but what escapes me - is how am i able to get the data from access table and put it into post...
hi all, We're implementing a New system using Java/Spring/Hibernate on PostgreSQL. This system needs to make a copy of Every Record as soon as a modification/deletion is done on the record(s) in the Tables(s). Later, the Audit Table(s) will be queried by Reports to display the data to the users. I was planning to implement this auditin...
I deployed an app that uses ActiveRecord to Heroku, and I got an internal server error. It works fine on my local machine (where the database is SQLite). Below is the log message for the error. The newsletters table is just a table with no associations. It's got just one field for email addresses. I don't know PostgreSQL, and I'm not sur...
Our team is building an RCP application using PostgreSQL for DB. We are evaluating the usage of Hibernate. Our project has the following constraints : 1) The project is a small extract-and-run-in-any-system type RCP application which is mostly used by non-technical users with a minimum setup needed. The application should have a low mem...
I want to know how can I do following things in scala? Connect to a postgreSQL database. Write SQL queries like SELECT , UPDATE etc. to modify a table in that database. I know that in python I can do it using PygreSQL but how to do these things in scala? ...
I am trying to copy an entire table from one database to another in Postgres. Any suggestions? ...
I'm new to GlassFish, and our company has recently migrated an old system from JBoss 2-something to GlassFish v3. Almost everything works fine, but we are having connection problems with a PostGres (v8.1) XADataSource. We have a database entry that holds the operating mode of the site and every request pulls this information to verify ...
I am new to PostgreSQL, mainly used MySQL before and SQLServer(for Clients Pressure; donno much), I've gone through several OODBMS Introductories over some Google Search. Most of them mainly focuses on Table <-> Object Mapping. But When using some Generic ORM Layer with any RDBMS Things are Hapily Mapped. So do we really need OODBMS ? I...
I am trying to open a dataset through a data store layer in OpenJUMP. I have successfully made the connection to the project that I have created with Postgres. However, when I select the dataset that should be loaded, OpenJUMP gives an error message saying that the relation does not exist (Runtime Exception, PSQL Exception) What could be...
Our solution needs us to work in hierarchies of regions which are as follows. STATE | DISTRICT | TALUK / \ / \ HOBLI PANCHAYAT \ / \ / ...
I want to store the Arraylist values into database(postgresql database) in java. ArrayList<String> ActiveProcess = new ArrayList<String>(); ArrayList<String> InActiveProcess = new ArrayList<String>(); I want to store the details in a database ProcessInfo table with following fields Process Name, Process Status, Email Sent, S...
Hello, I am trying to understand inheritance and how to use it with PostgreSQL. For this reason i design a database in the excel file. In the 1st columns you can see the table w/o inheritance while in the 2nd part of the sheet you can see the tables with INHERITANCE. Can you give me your opinion and help on the following? 1. Which is th...
Can you do somwthing like this in postresql? select min(column1, column2) as Min, max(column1, column2) as Max from mytable; ...
I have a .sql file that was created by postgresql a while back. I now want to import this file onto a windows machine running postgresql. How do I do this. The file is about 1.5gb. ...
I want to run squeryl for PostgreSQL on scala in ellipse. But I have no idea how will do it. I tried to see on the site http://squeryl.org but there is no mention of the steps needed. Only the list of neccessary files is given. can anybody guide me step-by-step to run squeryl for scala in ellipse. I am running scala 2.8.0 ...
I am trying to figure out how to insert the same value into the entire column of a table? The table already exists and I have an empty column into which I would like to insert a certain value, for example, today's date. I have only found sources explaining how to insert values into an entire row. ...
I'm trying to use PostgreSQL's RETURNING clause on an UPDATE within in UPDATE statement, and running into trouble. Postgres allows a query clause in an INSERT, for example: INSERT INTO films SELECT * FROM tmp_films WHERE date_prod < '2004-05-07'; I would like to use the RETURNING clause from an UPDATE as the query clause for an INSER...