The SELECT DISTINCT statement is used toreturn only distinct (different) values. Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values
A table in SQL is a collection of rows and columns where each column represents a specific attribute of the data. Learn more about it through this tutorial.
Learn what is Cursor in SQL with the help of examples. SQL cursor is a database object that is used to manipulate and traverse the result set of a SELECT query.
The auto-parameterization means a plan is chosen where the literal value 0 is replaced with a parameter by SQL Server. This is normally “okay”, because it promotes plan reuse. However, in this case, the auto-parameterized plan has to be safe for any value we pass in. Sure, it was 0...
SELECT ... WINDOW clause Determines the partitioning and ordering of a rowset before the window function, which uses the window in OVER clause is applied. See SELECT - WINDOW. IS [NOT] DISTINCT FROM Determines whether two expressions when compared with each other evaluate to NULL, and guarante...
Retrieving data is at the heart of SQL. The SELECT statement is the gateway to data retrieval. This statement enables users to query tables to fetch specific data from rows or entire datasets. SQL users can obtain the precise data they need from vast databases through techniques such as filter...
In SQL Server 2025 (17.x) Preview, when an ordered clustered columnstore index is built online, the sort algorithm usestempdbinstead of sorting the data in memory. IfMAXDOPfor the index build is 1, the build produces a fully ordered clustered columnstore index that doesn't have overlapping se...
When researching careers in IT, one is likely to come across the termcomputer science. While there's an overlap between IT and computer science, the two disciplines are distinct and require different courses of study to prepare for careers. ...
COUNT DISTINCT COUNT() with the DISTINCT clause removes duplicate rows of the same data in the result set. It also removes ‘NULL’ values in the result set. The correct syntax for using COUNT(DISTINCT) is: SELECT COUNT(DISTINCT Column1) FROM Table; The distinct count will be based off...
Object storage integrationSQL Server 2022 (16.x) introduces new object storage integration to the data platform, enabling you to integrate SQL Server with S3-compatible object storage, in addition to Azure Storage. The first isbackup to URLand the second is Data Lake Virtualization. ...