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Analytics & BI

Data Analytics,Big Data,Data Storage and Business Intelligence.

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windows azure teradata

Setup Teradata in Microsoft Azure

395 views   0 comments last modified about 2 years ago

This page provides the steps to create a Teradata database in Microsoft cloud computing platform Azure.

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teradata sql

Teradata SQL Tricks for SQL Server/Oracle Developers

1238 views   0 comments last modified about 2 years ago

For many SQL Server or Oracle developers, you may encounter some inconveniences when writing SQL queries. For example, how to select from dummy table or local defined variables. This page summarize the equivalents in Teradata SQL.

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teradata

Teradata Tutorial – DateTime Related Functions and Examples

2821 views   0 comments last modified about 2 years ago

This post summarize the common functions that are used when dealing with DateTime datatypes in Teradata.

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Create ETL Project with Teradata through SSIS

9794 views   2 comments last modified about 4 years ago

Infosphere DataStage is adopted as ETL (Extract, Transform, Load) tool in many Teradata based data warehousing projects. With the Teradata ODBC and .NET data providers, you can also use the BI tools from Microsoft, i.e. SSIS. In my previous post, I demonstrated how to install Teradata Tool...

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Querying Teradata and SQL Server - Tutorial 1: The SELECT Statement

32229 views   7 comments last modified about 4 years ago

SELECT is one of the most commonly used statements. In this tutorial, I will cover the following items: Two of the principal query clauses—FROM and SELECT Data Types Built-in functions CASE expressions and variations like ISNULL and COALESCE. * The functio...

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[C#] Connect to Teradata Database via .NET Data Provider

4971 views   2 comments last modified about 4 years ago

In this post, I will demonstrate how to connect to Teradata database via .NET Data Provider for Teradata using C#. Prerequisites Install the .NET Data Provider for Teradata from the following link: ...

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Connect to Teradata Virtual Machine Guest from Windows Host

6451 views   16 comments last modified about 4 years ago

In my previous posts about Querying Teradata and SQL Server, I logged into the virtual machine graphic interface to manage the database. However, I constantly found it is resource intensive as there is only 4GB memory in my laptop. Instead, I will use text mode to start the virtual machine and co...

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Querying Teradata and SQL Server - Tutorial 2 Filtering and Sorting

3369 views   2 comments last modified about 4 years ago

Tutorial –1 For Teradata developers, if you have no SQL Server installed, please go to the following link to download the SQL Server 2014 Expression Edition. ...

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Querying Teradata and SQL Server - Tutorial 0: Preparation

3020 views   0 comments last modified about 4 years ago

In this serial, I will compare Teradata SQL with T-SQL with samples provided. This is mainly prepared for SQL Server DBAs, Developers and other users to help them quickly master the common used SQLs in Teradata platform. Similar to T-SQL, Teradata SQL implements most part of the ANSI SQL with ext...

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sql server

SQL Server中的联合主键、聚集索引、非聚集索引

678 views   0 comments last modified about 9 years ago

我们都知道在一个表中当需要2列以上才能确定记录的唯一性的时候,就需要用到联合主键,当建立联合主键以后,在查询数据的时候性能就会有很大的提升,不过并不是对联合主键的任何列单独查询的时候性能都会提升,但我们依然可以通过对联合主键中的首列除外的其他列建立非聚集索引来提高性能。关于索引,可以参考我的这篇文章:http://hi.baidu.com/1987raymond/blog/item/a0f7b11062e1330a213f2e26.html

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