Blog Posts

Blog Post

A Lost Day

I’m writing this in advance, as I usually recommend for all bloggers, because this is a lost day for me. I’m not going to experience May 27th, 2019 on...

2019-05-27

41 reads

Cup and Saucer

Weekly reading #15

SQLDay 2019 is gone. The Data Community.PL has now a new goal – it is the SQL Saturday #914 in Torun. The speakers will be announced after July 30th....

2019-05-27

23 reads

Blog Post

Last Weeks Reading (2019-05-26)

It was tremendously extensive week for me (a week ago) when I spent time between two conferences: SQLDay (Wroclaw, Poland) and SQL Saturday #857 (Kiev, Ukraine). I’ve been helping...

2019-05-26

15 reads

Blogs

My Social Media Rules

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I developed these rules a while back, before COVID. I had a period of...

Why Use TRY_PARSE(): #SQLNewBlogger

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Someone asked why I would use TRY_PARSE after I posted a question at SQL...

A Guatemalan's Guide to Drinking Coffee Properly

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My mugI grew up surrounded by coffee farms in Guatemala and somehow spent most...

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Question of the Day

The Range of Customers

I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC):

orderid orderdate               customerid complete
3       2025-05-10 00:00:00.0002          1
21      2024-01-10 00:00:00.0003          1
15      2023-10-28 00:00:00.0004   1
13      2025-03-08 00:00:00.0006          1
11      2024-04-02 00:00:00.0007          1
If I run this query, how many rows are returned?
SELECT *
 from dbo.OrderHeader
 where customerid between 3 and '6'

See possible answers