Answering Questions On Dropped Columns
Answering a couple of questions from the previous posts about dropping columns.
2026-03-18
2,156 reads
Cláudio Silva
- Website: https://claudioessilva.eu
What happens when we drop a column on a SQL Server table? Where's my space?
You have dropped a column and wondering why you haven't recovered any space? Let's take a look.
2024-08-01 (first published: 2024-04-26)
5,119 reads
How much Space can I expect to recover from a rebuild after dropping a column?
Check how much space you may expect to recover from a rebuild after dropping a column!
2024-07-05
1,293 reads
Identify Tables With Dropped Columns
How easily can we find tables with dropped columns that need cleanup?
2024-06-07
2,672 reads
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9,501 reads
Finding the Free Space Difference Between Availability Groups Replicas
When was last time you have checked your Always On Availability Groups' replicas storage distribution?
2020-11-09
2,237 reads
Great Power(Shell)...Great Responsibility
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2020-10-23
3,987 reads
When one of your DBA colleagues leaves the company, what is your checklist?
A colleague left the company, a couple of days after SQL Server processes start failing...what do you do?
2020-09-29
6,424 reads
Recover database encrypted modules code with dbatools
If you own a database with encrypted modules but you don't have a decrypted version, this can be a horror story.
Learn how to get back the code of the encrypted modules using dbatools.
2020-08-18
3,026 reads
Generate Role Member Reports using dbatools and the ImportExcel PowerShell modules
Being able to get information and save it on a Excel as a report can be a common and tedious task. What if we could join dbatools and ImportExcel PorwerShell modules to accomplish this in a easier and fast way? We will see how to export roles and its' member and save that info on a multi spreadsheet Excel file with handy tables ready to be explored.
2020-06-30
7,126 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