When a table is modified by changing the order of fields or changing field type or adjusting field sizes etc, some of the dependent views (or views on views on views :)) may become invalid as they store some metadata in order to run more efficiently. These views would need to be refreshed with new […]
2007-04-20 (first published: 2007-03-20)
2,082 reads
A quick little standalone script that tells you what process is blocking and what processes the blocking processing actually blocking.When running this script in QA, change your output to "Results in Text" ( CTRL-T ). Utilizes the blocking info in sp_who2 combined with dbcc inputbuffer and a little cursor to wrap it all up. Formatting […]
2007-04-19 (first published: 2007-03-20)
7,468 reads
The script details about the workaround for using Dynamic SQL inside T-SQL user defined functions. Basically, T-SQL doesn't allow developers to perform/write any actions/statments which would affect the database's state. As a key note factor for any migration process from oracle to sql server developers need to do a work around on using execute immediate(for […]
2007-04-18 (first published: 2007-03-27)
4,095 reads
spWhatsRunning does just that. It tells you exactly what is executing on your server. By combining the output of the sp_who and dbcc inputbuffer, this script will tell you exactly whats being executed. DBCC INPUTBUFFER will tell you the same thing, but by the time you get the spid, the offending process may be gone. […]
2007-04-17 (first published: 2007-03-20)
2,764 reads
2007-04-16 (first published: 2007-03-20)
14,121 reads
Muestra la ubicacion del Backup mas reciente. Backup completo y backup diferencil de todas las BBDD.Get the location of the recent Backup. Complete Backup and backup diferencil of all the BBDD.
2007-04-13 (first published: 2007-04-02)
786 reads
UDF - SQL 2000 and higherThis function returns an 18 row table of date ranges around a given date.The ranges are: Day, Week (Sunday to Saturday), Month, Quarter, Half Year, Year.For each range there are 3 values: Previous, Same and NextExample of usage:Joined to an orders table:Select r.period, count(o.order_id)from orders oinner join dbo.ufn_date_ranges('2003-04-01') ron o.order_date […]
2007-04-12 (first published: 2003-07-03)
502 reads
In response to Sam Stange's "An old and new way to query Hierarchical data", this script uses the new CTE feature of SQL Server 2005 to display the hierarchical data all at once. I have added a check to prevent infinite loop in case there is a loop in the data (actually, there is one […]
2007-04-11 (first published: 2007-03-28)
1,441 reads
To build function based index in SQL Server, you can use indexed view (materialized view) or using a computed column. In this script, I give an exmaple of how to use the computed column to implement a function based index on a table to search through a free formated telephone number column. The basic step […]
2007-04-10 (first published: 2007-03-29)
9,243 reads
When AUTOSTATS is used in a database, we can sometimes use these automatically generated statistics to find columns where SQL Server has built statistics on non-indexed columns that may benefit from an index. This script finds these columns and displays the selectivity of them. This script can be useful in troubleshooting poorly performing databases by […]
2007-04-09 (first published: 2007-02-20)
1,757 reads
By Steve Jones
Redgate is a for-profit company. We look to make money by building and selling...
If you've ever loaded a 2 GB CSV into pandas just to run a...
By James Serra
What problem is Fabric Ontology trying to solve? For years, most data conversations have...
Comments posted to this topic are about the item The New Software Team
Comments posted to this topic are about the item Database Mail in SQL Server...
Comments posted to this topic are about the item 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