Crispin


Technical Article

Script to backup all databases

A proc which gets a list of all databases (Exluding "excluded" ones) and backs them up.The backup files are stored in the directory \DatabaseName\DatabaseName.bakUNC names are supported provided SQL Server has write access to the location.It deletes backups older than x (Current 3) days.This can be changed.Add a job to execute the script of proc […]

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2003-06-26

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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;
GO
What happens if you execute the following statements?
  1. select STRING_AGG(field1, ';') within group (order by id)  from t0;
  2. select STRING_AGG(field2, ';') within group (order by id)  from t0;

See possible answers