How to report a SQL Server performance problem
You’re experiencing a sudden slow down in SQL Server performance. Users are complaining .Many reasons could be causing this sudden...
2011-08-18
716 reads
- Interests: Performance Tuning Database Servers, Running and Coffee
RAID server configuration and disk amounts
Choosing the optimal amount of disks for a RAID server configuration and block sizes can be a challenge.
Typical questions from...
2011-08-17
1,094 reads
Calculate table size with existing data
Calculate the physical size of a SQL Server database table (data and indexes) , if rows exist . These steps present a...
2011-08-16
990 reads
Blogs
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Forums
Wrong frames in blocked process report
Hi all, I'm on a sql server 2019 standard edition (15.0.4375.4) where I've a...
SRSS Failed Setup " The System cannot find the file specified (0x80070002)
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Git Repo(s) for SQL Server Database, SSIS, SSAS, SSRS, PowerBI
Hey all, Just wondering how do you guys / girls set up git repo(s)...
Question of the Day
STRING_AGG's behavior
Executing the following script (Sql Server 2022), you get the table t0 with 10 rows:
CREATE TABLE t0
( id INT PRIMARY KEY
, field1 VARCHAR(1000)
, field2 VARCHAR(MAX));
INSERT INTO t0
SELECT
gs.value
, REPLICATE ('X', 1000)
, REPLICATE ('Y', 1000)
FROM generate_series(1, 10, 1) gs;
GOWhat happens if you execute the following statements?
select STRING_AGG(field1, ';') within group (order by id) from t0;
select STRING_AGG(field2, ';') within group (order by id) from t0;