Replacing Cursors with Set-Based SQL Queries – Part 2
Part 2 of a discussion about replacing cursors with SQL statements for significant speed improvements.
In a recent post I discussed...
2011-07-06
12,487 reads
Part 2 of a discussion about replacing cursors with SQL statements for significant speed improvements.
In a recent post I discussed...
2011-07-06
12,487 reads
A brief mention that we are done with the school year flip process for transitioning to the new school year.
I...
2011-07-01
802 reads
Part 1 of a discussion about replacing cursors with SQL statements for significant speed improvements.
In a previous post I discussed...
2011-06-27
7,971 reads
A discussion of how Google can serve as an invaluable resource when facing a SQL-based challenge.
Today I briefly want to...
2011-06-23
736 reads
A discussion of how a separate database is used for storing table backups.
In a recent article, one of the things...
2011-06-20
889 reads
Why being careful is such an important mindset when working with SQL and databases.
At the Boston Public Schools, certain processes...
2011-06-17
1,129 reads
A small post regarding a couple SQL books I bought from Amazon.
A couple new books arrived in the mail from...
2011-06-15
848 reads
A continuation of the data dictionary discussion with information about how the documentation is done.
Today I’m going to continue discussing...
2011-06-13
1,471 reads
A brief discussion and links to a series of YouTube videos from Stéphane Faroult.
I’ll continue the discussion of the table...
2011-06-11
1,208 reads
Why table and column documentation is useful and some SQL for setting up the data dictionary tables.
At Boston Public Schools,...
2011-06-10
1,903 reads
I’ve been putting together a new PostgreSQL session called “Performance Monitoring for the Absolute...
By Rayis Imayev
(2025-Feb-12) I will jump straight to the problem statement without a "boring" introduction, which, in...
By Steve Jones
I wrote about getting the Redgate Test Data Manager set up in 10 minutes...
If this post doesn't meet protocol here, please tell me how to improve as...
I'm a retired IT guy in his 80s fighting boredom by trying to learn...
I just joined and posted a brief profile. This is my first post. Please...
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) GOWhen I run this query, how many unique values are returned for the SalesRank column?
SELECT st.SalesDate , st.SalesPersonID , st.total , RANK () OVER (PARTITION BY st.SalesPersonID ORDER BY st.total desc) AS SaleRank FROM dbo.SalesTracking AS st;See possible answers