All Articles - SQL Authority with Pinal Dave

SQL SERVER – Interesting Observations Using MONEY Datatype

October 22, 2015

MONEY is one of the data types supported in SQL Server. There are some interesting information about this. Observation 1: Money datatype can accept up to four scale values. DECLARE @money money SET @money='$1,200.45679' SELECT @money which results to 1200.4567 Observation 2: If the scales value exceeds 4 digits, it is rounded to…

SQL SERVER – Database Size Limitation in SQL Express

October 21, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Server Express

I have a tendency to write a number of interview style questions and those are quite popular in this blog. Having said that, sometimes we get asked about tricky questions on a small variety which we might know some of the basics – but sometimes it makes us think twice.…

SQL SERVER – Log Shipping Restore Job Error: The file is too recent to apply to the secondary database

October 20, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Error Messages

If you are a DBA and handled Log-shipping as high availability solution, there are a number of common errors that come that you would over a period of time become pro on resolving. Here is one of the common error which you must have seen: Message 2015-10-13 21:09:05.13 *** Error:…

SQL SERVER – ColumnStore Frequently Asked Queries

October 19, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Index

This blog talks about troubleshooting scenarios in FAQ format when dealing with ColumnStore Indexes inside SQL Server. Use a combination of trace flags, query hints, performance counters, extended events discussed in various blogs to gather relevant data and troubleshoot the problem. Sometimes I have seen people use ColumnStore as a…

Interview Question of the Week #041 – What is a Merge Join?

October 18, 2015

Pinal Dave

SQL, SQL Interview Questions and Answers, SQL Server, SQL Tips and Tricks

SQL Joins

Question: What is a Merge Join? Answer: The Merge Join transformation provides an output that is generated by joining two sorted data sets using a FULL, LEFT, or INNER join. The Merge Join transformation requires that both inputs be sorted and that the joined columns have matching meta-data. The user cannot…

SQL SERVER – Script Upgrade Mode on Failover – Why?

October 17, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

Troubleshooting Cluster related queries is always a challenge and every once in a while I get mails around these. One of my friend wrote email to me and it caught my attention and I took couple of days to explore and felt worth to share it here: <EMAIL> Hi Pinal.…

The Milestone – Notes from the Field #100

October 16, 2015

Pinal Dave

SQLAuthority News

Notes from the Field, SQL Milestone, SQL Server

[Note from Pinal]: This is a 100th episode of Notes from the Field series.

SQL SERVER – Looking Forward to Meeting you at SQLPASS 2015

October 15, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL PASS

If you are going to at SQLPASS 2015, Seattle, I am looking forward to meet you. I will be there and presenting two technology sessions. Here are the details of my sessions. I will be very happy if you are at SQLPASS and attend my session. If you see me…

SQL SERVER – Strange SQL Transaction called UpdateLoginStats

October 14, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

I was preparing a demo for my upcoming presentation which is about couple of weeks ahead. While doing a stress test, I was looking at profiler and found that for every login there is an additional SQL transaction which is having ObjectName as UpdateLoginStats appearing even before Audit Login. Initially…

SQL SERVER – To Find Events Mapped to Channels in Extended Events

October 13, 2015

Pinal Dave

SQL Tips and Tricks

SQL Extended Events, SQL Scripts, SQL Server

I have outlined a number of blogs here that point to the basics of working with Extended Events. Some of them also detail you some specific scenarios that you can use inside your environments.