SQL

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Creating Time-Intelligence Functions in DAX

  • Article

DAX contains a host of time-intelligence functions with exotic names such as SAMEPERIODLASTYEAR and PARALLELPERIOD. In the last article in this series, Andy Brown explains how to write measures using the range of date functions in DAX, and also explains how time-intelligence functions work behind the scenes.

2020-03-06

SQLServerCentral Article

Analysis Services : OLEDB Error while processing in SSAS

  • Article

Problem This is one of the errors that I frequently encounter while deploying or processing SSAS OLAP cubes on the client's computers or on a remote server. Recently, one of my team members also faced the same issue and so I thought to write a resolution for the issue. The error is something like this: […]

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2020-02-03

10,002 reads

SQLServerCentral Article

How to filter non-existing records in SQL

  • Article

Introduction Developing predefined reports in addition to all the ad-hoc queries have been a part of my daily activities. Often I find my stakeholders asking me to prepare reports in which they want to know something that has never happened. It might sound strange, but yeah, that's what their point of concern is all about. […]

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2021-11-26 (first published: )

15,977 reads

SQLServerCentral Article

A User-Defined Function returns more rows

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The Problem Recently, while working with one of my clients, I came across a script in which I had to introduce a scalar User-Defined Function in the SELECT statement. The SELECT used to return around 750K records. However, after introducing the UDF, the row count significantly increased to 826K. There were no other changes made […]

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2019-10-14

5,206 reads

SQLServerCentral Article

Optimize Your SQL by Reformulating the Spec

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As SQL developers, we tend to think of performance tuning in terms of crafting the best table indices, avoiding scalar and table valued functions, and analyzing query plans (among other things). But sometimes going back to the spec and applying some properties of elementary math can be the best way to begin to improve performance of SQL queries which implement mathematical formulas. This article is a case study of how I used this technique to optimize my SQL implementation of the Inverse Simpson Index.

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2021-05-07 (first published: )

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Access + ODBC Driver 18 + SQL Server 2025: ~150–250 ms per request

By Bruno De Grauwe

Has anyone encountered recurring request latency when using Microsoft Access with SQL Server 2025...

The ##MS_DatabaseConnector## User

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The ##MS_DatabaseConnector## User

Planning for Change

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Planning for Change

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Question of the Day

The ##MS_DatabaseConnector## User

On SQL Server 2025, I run this code as a sysadmin:

CREATE LOGIN Demo WITH PASSWORD = 'Demo1234567'
GO
ALTER SERVER ROLE ##MS_DatabaseConnector## ADD MEMBER Demo
GO
I then login as Demo and run this:
USE sandbox
go
SELECT CURRENT_USER
What is returned?

See possible answers