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Navigating the Database Landscape in 2025 Livestream on Feb 12

Join us on February 12th for the livestream: Navigating the Database Landscape in 2025: Simplifying Complexity. Discover the latest trends and insights from our 2025 report, learn new approaches for professional development, and gain valuable knowledge to stay ahead in your career.

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2025-02-10 (first published: )

Technical Article

PASS Summit 2025 Dates

You heard it here first, PASS Data Community Summit will return to Seattle next year! Save the date, as PASS Summit will take place in person at Summit, Seattle Convention Center, from November 17-21, 2025!

2024-10-11

Technical Article

Microsoft to Headline PASS Data Summit 2024 as Sapphire Sponsor

Join Microsoft at PASS Summit 2024 to explore the latest database innovations and how Azure solutions enhance app performance, security, and scalability in the AI era. Learn new SQL database capabilities, connect with Microsoft engineering leaders, and attend expert-led sessions on topics from database migration to modernization.

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2024-10-09

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SQLServerCentral Article

PostgreSQL is Now Faster than Pinecone, 75% Cheaper, with New Open Source Extensions

Two new open-source extensions from Timescale make PostgreSQL even better for AI applications, unlocking large-scale, high-performance AI use cases previously only achievable with specialized vector databases like Pinecone.

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2024-06-12

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Question of the Day

The Rank Window II

I have this table and data:

CREATE TABLE [dbo].[SalesTracking]
(
[SalesDate] [datetime] NULL,
[SalesPersonID] [int] NULL,
[CustomerID] [int] NOT NULL,
[PONumber] [varchar] (80) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
[paid] [bit] NULL,
[total] int
) ON [PRIMARY]
GO
CREATE CLUSTERED INDEX [SalesTrackingCDX] ON [dbo].[SalesTracking] ([SalesDate]) ON [PRIMARY]
GO
INSERT dbo.SalesTracking
  (SalesDate, SalesPersonID, CustomerID, PONumber, paid, total)
VALUES
  ('2024-03-15 10:45:55.067', 1, 1,'PO965' ,1, 100),
  ('2023-09-24 10:45:55.067', 1, 2,'PO627' ,1, 200),
  ('2022-07-02 10:45:55.067', 1, 3,'PO6'   ,1, 300),
  ('2022-11-03 10:45:55.067', 1, 4,'PO283' ,1, 400),
  ('2022-11-26 10:45:55.067', 1, 5,'PO735' ,1, 500),
  ('2023-04-28 10:45:55.067', 1, 6,'PO407' ,1, 600),
  ('2022-09-09 10:45:55.067', 1, 7,'PO484' ,1, 700),
  ('2024-03-13 10:45:55.067', 1, 8,'PO344' ,1, 700),
  ('2024-04-24 10:45:55.067', 1, 9,'PO254' ,1, 800),
  ('2022-06-19 10:45:55.067', 1, 10,'PO344',1, 800)
GO
When I run this query, how many unique values are returned for the SaleRank column?
SELECT
  st.SalesDate
, st.SalesPersonID
, st.total
, DENSE_RANK () OVER (PARTITION BY st.SalesPersonID
                ORDER BY st.total desc) AS SaleRank
FROM dbo.SalesTracking AS st;

See possible answers