Showing posts with label sql. Show all posts
Showing posts with label sql. Show all posts

Wednesday, 14 August 2024

How does Snowflake store data?

There are many "big data" technologies out there one of them being Snowflake. Snowflake lets you run SQL queries on data which is stored in Snowflake's internal columnar format optimized for cloud storage.

Saturday, 24 August 2019

Bug Fixed in SSIS in Visual Studio 2019 Update 16.2.3

A bug in loading SSIS packages has been fixed in the latest update of Visual Studio 2019. SSIS refers to SQL Server Integration Services, an upgrade of Data Transformation Services, or DTS.

Friday, 8 February 2013

Storing C# Strings in an Oracle Database

This is not an Oracle blog, and Windows Joe has no intention of turning it into such. However, since Oracle coding is occasionally required by the Windows programmer, occasional clarifications on the aforementioned technology are sometimes warranted.

In addition, such posts may be of interest to database enthusiasts wanting to refresh the basics.

One such, is the popular newbie question (and also asked by experienced bods who haven't touched Oracle in a long time) is what datatype to use for string data?

VARCHAR - not to be used. Why - because Oracle says so. It may work, but is not recommended.
VARCHAR2 - the recommended way to store strings (or more precisely, VARIABLE LENGTH character strings).
CHAR - for fixed length character strings.Using this type to store variable length strings is a waste of space.

So in 95% of cases, you need a VARCHAR2 to represent strings in an Oracle database.

Tuesday, 25 May 2010

Limitations of Sql Server Express

The key limitation of Sql Server Express is:

1. Maximum 4 GB database size.

Other limitations: uses only one CPU at a time even on a multi-core machine, maximum buffer size 1GB, data/import export feature disabled.