James Serra

James works at Microsoft as a big data and data warehousing solution architect where he has been for most of the last nine years. He is a thought leader in the use and application of Big Data and advanced analytics, including data architectures such as the modern data warehouse, data lakehouse, data fabric, and data mesh. Previously he was an independent consultant working as a Data Warehouse/Business Intelligence architect and developer. He is a prior SQL Server MVP with over 35 years of IT experience. He is a popular blogger (JamesSerra.com) and speaker, having presented at dozens of major events including SQLBits, PASS Summit, Data Summit and the Enterprise Data World conference. He is the author of the book “Deciphering Data Architectures: Choosing Between a Modern Data Warehouse, Data Fabric, Data Lakehouse, and Data Mesh”.

All authors

Blog Post

PolyBase explained

PolyBase is a new technology that integrates Microsoft’s MPP product, SQL Server Parallel Data Warehouse (PDW), with Hadoop.  It is designed to...

2014-02-25 (first published: )

18,191 reads

All authors

Blogs

T-SQL Tuesday #202 SQL Server Outage You’ll Never Forget: A Roundup

By

When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...

A Last Minute Trip to the EU

By

My life has some crazy travel stretches for sure. Between speaking, office visits, customer...

Part 3 of 3: Tuning DiskANN — R, Alpha, L, Beam Width, Recall and Latency

By

In Part 1, we saw how ‘Vamana’ represents vectors as nodes, connects them with...

Read the latest Blogs

Forums

Implementing Type 4 Slowly Changing Dimensions in SQL Server

By Dinesh Asanka

Comments posted to this topic are about the item Implementing Type 4 Slowly Changing...

The Disabled Index

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The Disabled Index

Server-Level Table sizes

By Artur Sanin

Comments posted to this topic are about the item Server-Level Table sizes

Visit the forum

Question of the Day

The Disabled Index

I run this code on SQL Server 2022. 

CREATE TABLE Drink
(
    drinkid INT NOT NULL
        CONSTRAINT DrinkPK PRIMARY KEY CLUSTERED,
    drinkname VARCHAR(20),
    rating NUMERIC(2, 1)
)
GO

INSERT INTO Drink
(
    drinkid,
    drinkname,
    rating
)
VALUES
(1, 'Margarita', 4.5),
(2, 'Mojito', 4.3),
(3, 'Old Fashioned', 4.7),
(4, 'Martini', 4.4),
(5, 'Cosmopolitan', 4.2)
GO
ALTER INDEX drinkpk ON dbo.drink DISABLE
GO
SELECT * FROM dbo.Drink
GO
What is the result?

See possible answers