Introduction According to the official documentation, the READ COMMITTED isolation level “specifies that statements cannot read data that has been modified but not committed by other transactions”. So, one could think that a record returned under this isolation level existed in the committed state at the time of reading. In this article, I am going […]
2021-10-01
2,179 reads
A detailed description of a technique for the the solution of the Bin Packing Problem, that involves a recursive CTE and Window functions
2020-05-14 (first published: 2020-04-23)
5,757 reads
Introduction TOP is one of the many syntactical operators available in T-SQL and at a first view, it could seem very simple and not particularly interesting. According to the official documentation, it “limits the rows returned in a query result set to a specified number of rows or percentage of rows”. The following is the […]
2019-06-04
5,196 reads
Based on a real fact, this article demonstrates how a bad use of sp_executesql can lead to unpleasant surprises
2018-04-30
1,847 reads
Foreign Keys are one of the fundamental characteristics of relational databases and enforce the referential integrity. Is it a good idea to index a FK relationship? When can it help?
2016-09-16 (first published: 2015-06-29)
15,803 reads
SQL Server 2014 has introduced a rebuilt Cardinality Estimator (CE) with new algorithms. Which are the biggest differences between the new CE and the previous one? Which one works better? Read more to find out.
2015-04-09
6,864 reads
If you spend your days tuning queries, managing pipelines, or keeping a production database...
I’ve been rebuilding my three-site SQL Server demo lab, and I ran into something...
By SQLPals
SQL Server gMSA: Why DBAs Still Aren't Using It in 2026 ...
Comments posted to this topic are about the item Never is Not the Policy
Comments posted to this topic are about the item Automating SSAS Multidimensional Security Audits...
Comments posted to this topic are about the item Rebuilding All Indexes
I have added a few indexes to one of my tables in SQL Server 2025:
ALTER TABLE dbo.CustomerContact
ADD CONSTRAINT PK_CustomerContact
PRIMARY KEY (CustomerID);
-- Create index on CustomerEmail
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (CustomerEmail);
CREATE INDEX IX_CustomerContact_CustomerEmail
ON dbo.CustomerContact (phone);
I then do this to disable one index:
alter index IX_CustomerContact_CustomerPhone on dbo.CustomerContact disableI see this when I check the index status:
I decide to rebuild all indexes with this command:
ALTER INDEX ALL ON dbo.CustomerContactAfter I do this, what will I see for the index status? See possible answers