2016-09-20 (first published: 2016-08-17)
1,026 reads
Scripts
Querying deadlock graph from SQL Extended Events
Sample script to read deadlock graph XML from default system health XEvent.
2016-09-16 (first published: 2014-10-16)
4,677 reads
Checking All Date Columns in a Table(s)
Find minimum and maximum values for all date columns in a table or range of tables, using a mask.
2016-09-15 (first published: 2014-10-27)
3,056 reads
Split string using multiple delimiters - version 2
http://www.sqlservercentral.com/scripts/split+string/117123/
The above script will split upto 256 char length only. This new version will split upto N length.
2016-09-14 (first published: 2014-10-30)
1,851 reads
Calculate distance between 2 coordinates/latlong
This function is used to get the distance between 2 coordinates/latlong in the different formats
2016-09-13 (first published: 2014-10-31)
1,707 reads
Convert integers/numbers into binary format - viceversa
This functions are used to convert integers/numbers into binary format and viceversa.
2016-09-09 (first published: 2014-11-18)
1,897 reads
Date-based table purge
This procedure takes in charge the clean-up for a given table based on a date field
given as parameter and a retention expressed as a number of days.
2016-09-08 (first published: 2014-11-19)
1,528 reads
2016-09-06 (first published: 2014-11-20)
1,853 reads
2016-09-05 (first published: 2015-05-20)
2,675 reads
Stupid Coding Tricks: The T-SQL Mandelbrot
The bar for entry into CodeSOD is pretty straight forward: professionally-developed code that elicits that certain What The— reaction. Though there have been a few exceptions over the years, generally speaking, student code, hobbyist code, and amateur code need not apply. That said, I'd like to try something a little different today. Today's example is not technically professionally-developed, it's a Stupid Coding Trick.
"So I was bored at work one day," Graeme Job explains, "and wondered, what's the most useless thing I could do with my time without actually doing anything. Then it hit me. I could use T-SQL to generate... Mandelbrot."
Graeme continued, "Following is a single T-SQL SELECT statement that generates a text-representation of a Mandelbrot Set. The results are best viewed in text-mode."
2016-09-02 (first published: 2014-12-12)
5,482 reads
Blogs
Stop Using Pandas for Aggregations — Try DuckDB Instead
If you've ever loaded a 2 GB CSV into pandas just to run a...
Understanding Fabric Ontology
By James Serra
What problem is Fabric Ontology trying to solve? For years, most data conversations have...
QUOTENAME Basics: #SQLNewBlogger
By Steve Jones
Recently I ran across some code that used a lot of QUOTENAME() calls. A...
Forums
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Question of the Day
The string_agg function
We create the following table and then insert some records in it:
create table t1 ( id int primary key, category char(1) not null, product varchar(50) ); insert into t1 values (1, 'A', 'Product 1'), (2, 'A', 'Product 2'), (3, 'A', 'Product 3'), (4, 'B', 'Product 4'), (5, 'B', 'Product 5');What happens if we execute the following query in both Sql Server and PostgreSQL?
select id,
category,
string_agg(product, ';')
over (partition by category order by id
rows between unbounded preceding and unbounded following) as stragg
from t1; See possible answers