Quite recently, I dove into SAP UI5 development. To educate myself, I followed a workshop and I used the Walkthrough.
During my explorations, I ran into a particular issue which I didn't see very readily addressed. I also found a solution for this particular issue, and even though I still have a ton to learn, I think it is worth sharing. So, here goes:
Jedox is a software vendor that specializes in OLAP services and solutions. The company has been around quite a while and is probably best known for their PALO MOLAP engine and the matching add-in for Microsoft Excel.
Jedox' flagship product, Jedox Premium comprises the Palo MOLAP engine, API's, a REST server, and ETL server, and client tools. It also comes with a MDX interpreter and a XML for Analysis server.
IcCube is a relatively young Swiss company specialized in creating OLAP software products. Their flagship product is the icCube Suite, providing an OLAP server, an XML for Analysis service, and a bunch of browser-based client tools for modeling cubes and dimensions, and for querying, reporting and visualizing OLAP data.
A couple of days ago I wrote about one of my forays into MDX land (Retrieving denormalized tabular results with MDX). The topic of that post was how to write MDX so as to retrieve the kind of flat, tabular results one gets from SQL queries. An essential point of that solution was the MDX Ancestor() function.
I've been trying to learn the MultiDimensional Expression language (MDX) for quite a while. Unfortunately, I haven't been very successful at it. MDX has a few conceptual and some (superficial) syntactical similarities to SQL, but I have arrived at the conclusion that it is probably better to treat it as a completely different kind of language.
Today, Oracle announced the availability of the Development Milestone Release 15 of MySQL 5.7.5. The tagline for this release promises "Enhanced Database Performance and Manageability". That may sound rather generic, the actual list of changes and improvements is simply *huge*, and includes many items that I personally find rather exciting!
this does not sound like a question that has anything todo with this article. Simple write a servlet as you are used to, and add code to execute SQL statements. You can send it whatever statement you like so you should be able to generate a statement that creates a table using some servlet parameter as name.
I have a requirement in MYSQL as follows: we have a table EMP and we have to restrict the users not delete employees with DEPT_ID = 10. If user executes a DELETE statement without giving any WHERE condition all the rows should be deleted except those with DEPT_ID = 10.
We are trying to write a BEFORE DELETE trigger but we are not able to get this functionality.
this is a quick note to let you know that from now on, commenters on this blog will need to complete a word verification (captcha) step.
Personally, I regret to have to take this measure. Let me explain why I'm doing it anyway.
Since 3 months or so, moderating comments on this blog is becoming a real drag due to a surge in anonymous spam. While bloggers spam detection is quite good, I still get notificaton mails prompting me to moderate. I feel this is consuming more of my time than it's worth.
Codebits is an annual 3-day conference about software and, well, code. It's organized by SAPO and this year's edition is to be held on November 10 thru 12 at the Pavilhão Atlântico, Sala Tejo in Lisbon, Portugal.
I'm currently developing a Xslt 1.0 stylesheet for analysis of XML Schema documents. As part of this work, I developed a couple of templates for working with namespace names and prefixes, and I like to share them via this post. The code is not incredibly hard or advanced, but it gets the job done and it may save you some time if you need something similar.
Since this article was written, HPCC has undergone a number of significant changes and updates. This addresses some of the critique voiced in this blog post, such as the license (updated from AGPL to Apache 2.0) and integration with other tools. For more information, refer to the comments placed by Flavio Villanustre and Azana Baksh.
Here's an issue I've come across multiple times: I need to scrape HTML websites to extract data. Pentaho Data Integration (kettle) has lots of functionality on-board to make this an easy process, except one: it does not support reading data directly from HTML.
Over time I've grown a habit of making a configuration file for my kettle jobs. This is especially useful if you have a reusable job, where the same work has to be done but against different conditions. A simple example where I found this useful is when you have separate development, testing and production environments: when you're done developing your job, you transfer the .kjb file (and its dependencies) to the testing environment. This is the easy part.
JasperSoft, one of the leading open source BI suites just announced it is delivering connectors for a range of so-called NoSQL databases. The big names are all there: Cassandra, MongoDB, Riak, HBase, CouchDB, Neo4J, Infinispan, VoltDB and Redis.
This is the second article in a series to provide some background to my talk for the MySQL User's conference. The conference will be held April 11-14 2011 in the Hyatt Regency hotel in Santa Clara, California.
Kettle (a.k.a. Pentaho Data Integration) jobs and transformations offers support for named parameters (as of version 3.2.0). Named parameters form a special class of ordinary kettle variables and are intended to clearly and explicitly define for which variables the caller should supply a value.
It has been a while since I posted on my blog - in fact, I believe this is the first time ever that more than one month passed between posts since I started blogging. There are a couple of reasons for the lag:
From a functional perspective, the core SQL support in all major and minor RDBMS-es is reasonably similar. In this light, it's sometimes quite disturbing to find how some very basic things work so differently across different products. Consider this simple statement:
SELECT 'a' /* this is a comment */ 'b' FROM onerow
What should the result be? (You can assume that onerow is an existing table that contains one row)
It turns out popular RDBMS-es mostly disagree with one another.