Articles

Technical Article

Review Your BUCKET_COUNT Statistics with DMV

Greg Larsen discusses the BUCKET_COUNT setting of a HASH index and how to determine how well SQL Server distributes the In-Memory table rows across multiple buckets of a HASH index, by exploring a new DMV, provided with SQL Server 2014, along with the In-Memory OLTP table functionality.

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2014-03-19

2,032 reads

External Article

Paul Randal: Geek of the Week

Paul Randal and Kimberly Tripp, together with their small team of experts at SQLSkills.com, dominate the high-end training and consultancy for SQL Server. We sent Richard Morris to find out a bit more about Paul, his views about SQL Server, his lifestyle, ambitions and plans.

2014-03-18

2,910 reads

Technical Article

Windows Azure SQL Database - Uploading Data by Using the bcp Utility

Instead of using a custom SSIS-based project to upload content from an on-premise SQL Server database to Azure PaaS-based SQL Database, Marcin Policht presents an alternative approach. Using the bcp utility not only eliminates the need for any custom development, but also rivals SSIS in terms of its data transfer efficiency.

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2014-03-17

3,582 reads

External Article

Big Data Basics - Introduction to HDFS

One of the core components of the Hadoop framework and responsible for the storage aspect is HDFS. Unlike the usual storage available on our computers, HDFS is a Distributed File System and parts of a single large file can be stored on different nodes across the cluster. Here are some of the key concepts related to HDFS.

2014-03-14

4,123 reads

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Question of the Day

Adding new column with DEFAULT

Which number will the COUNT() return after executing the following statements:

DROP TABLE IF EXISTS #test;
CREATE TABLE #test (id INT)
INSERT INTO #test (id)
SELECT *
  FROM GENERATE_SERIES(1, 3) AS gs
;

ALTER TABLE #test ADD flag BIT CONSTRAINT DF_#test_flag DEFAULT 0;
go
UPDATE #test SET flag = 0 WHERE id = 1
UPDATE #test SET flag = 1 WHERE id = 2

INSERT INTO #test (id) VALUES (4)

SELECT COUNT(*)
  FROM #test AS t
 WHERE flag = 0
 

See possible answers