Tagging SQL Server Changes in SQL Monitor
How to use RAISERROR() in T-SQL to send annotations to SQL Monitor, so you can observe the direct impact of application tasks, or server changes, on the SQL Server metrics.
2020-03-30
T-SQL
Implementing Date Calculations in SQL
This article explains a way to use labels (last year, YTD, etc.) for report parameters.
2020-03-05
6,871 reads
Introduction to STRING_SPLIT function in SQL
This article explains the T-SQL function STRING_SPLIT() and demonstrates a creative use for it.
2020-03-02
10,536 reads
Mean Median Mode using SQL and DAX
This article explains how to calculate the important statistical functions, MEAN, MEDIAN, and MODE, in both T-SQL and DAX.
2020-02-28
34,442 reads
Database Normalization in SQL with Examples
Gouri Shankar provides an overview of normalizing a database.
2020-02-18
88,933 reads
Handling Aggregations on a Poorly Designed Database
When the database design is not great, you may have to write some creative queries to get what you need.
2020-02-17
3,464 reads
Calculate Moving Averages using T-SQL in SQL Server
Introduction In Financial Data, analyzing the Moving Average (MA) is a very common practice. The direction of the moving average conveys important information about prices, whether that average is simple or exponential. A rising moving average shows that prices are generally increasing. A falling moving average indicates that prices, on average, are falling. This article […]
2020-02-04
23,118 reads
Prevent SQL Server Blocking using Lock_Timeout
In this tip we look at a way to minimize the length of blocking using SQL Server lock timeout.
2020-01-24
T-SQL script to purge all the tables including foreign key references
T-SQL script to purge all the tables including foreign key references. The script has been made smart enough to use TRUNCATE wherever there is no foreign key reference and to use DELETE wherever there is foreign key reference.
2019-12-10
2,605 reads
SQL Server Name Convention and T-SQL Programming Style
There are only two hard things in Computer Science: cache invalidation and naming things -- Phil Karlton The recommendations in this article are not the ultimate truth. Please consider this article as a rule template that you can adapt to your needs. A naming convention is a set of rules for choosing the character sequence to […]
2019-12-10
25,249 reads
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Question of the Day
Creating a JSON Document III
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT TOP 2
json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
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