Answering Questions On Dropped Columns
Howdy folks! Long time no write.
In this post, I will be answering a couple of questions from the previous posts about dropping columns.
A quick refresh
If you haven’t read the...
2026-04-19
19 reads
Cláudio Silva
- Website: https://claudioessilva.eu
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2025-04-14
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Answering Questions On Dropped Columns
Howdy folks! Long time no write.
In this post, I will be answering a couple of questions from the previous posts about dropping columns.
A quick refresh
If you haven’t read the...
2025-03-10
25 reads
How much space can I expect to recover from a rebuild after dropping a column?
In my last article - Identify Tables With Dropped Columns - we saw how we can identify tables that have columns that were dropped. Today, we are going to...
2024-08-05
65 reads
Identify Tables With Dropped Columns
On my last article - What happens when we drop a column on a SQL Server table? Where’s my space? - I have shown what happens when we drop...
2024-07-22 (first published: 2024-07-09)
383 reads
What happens when we drop a column on a SQL Server table? Where's my space?
This article was initially posted on SQLServerCentral @ 2024-04-26.
Short answer: The column is marked as ‘deleted’ and will stop being visible/usable.
But, most importantly - The record/table size will remain...
2024-05-29
298 reads
Check Azure SQL DB Space Used
A couple of days ago I was doing some cleaning on some Azure SQL DBs and shrinking some files to lower the bill.
To check my progress I needed to...
2024-05-02
234 reads
Query Store: How to open multiple instances of the 'Tracked Queries' dashboard
At the beginning of this week, I shared how you can Search for queries with Query Store GUI .
Today I want to share something, Query Store related, that bugged...
2024-02-16 (first published: 2024-02-01)
387 reads
Search for queries with Query Store GUI
Hey folks, long time no write!
Today I want to bring a tip that I use every week but I found that most SSMS users are unaware it exists.
I can...
2024-02-09 (first published: 2024-01-29)
713 reads
dbatools - Exceptions
Who doesn’t like a good red and verbose exception? At PowerShell community we often call it a “sea of red” which we found as something that can be intimidating....
2022-06-27 (first published: 2022-06-07)
380 reads
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Question of the Day
The Empty Aggregate
I have this table in a SQL Server 2025 database:
CREATE TABLE [dbo].[CustomerOrder] ( [OrderID] [int] NULL, [CustomerID] [int] NULL, [total] [money] NULL ) ON [PRIMARY] GOWhat is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
COUNT(total) AS count
FROM dbo.CustomerOrder;
See possible answers