Cross DB Access With Module Signing
Foreword
I’ve recently had to revisit this topic and spent a lot of time recalling the details. So I’m writing this blog post mainly as a reminder for myself.
The most...
2022-05-12
29 reads
StraightforwardSQL
Why my way of writing SQL is superior
⚠️ It’s hard to convey sarcasm over the text. I’m putting this disclaimer at the top so I don’t come off egoistic. This post is meant as hyperbole, and...
2022-04-13
36 reads
Query Hash and Query Plan Hash Mapping
The problem
As a fan of Dynamic Management Objects (DMOs), Query Store and Extended Events, I often work with the Query Hash and Query Plan Hash (I’ll refer to them...
2022-04-11
54 reads
KEEP PLAN Demystified
Foreword
I was always wondering what the KEEP PLAN hint does. The documentation isn’t very specific (emphasis mine):
Forces the Query Optimizer to relax the estimated recompile threshold for a query.
In...
2022-04-07
88 reads
Blogs
Measuring RAG Solutions: Are We Retrieving the Right Information?
A RAG pipeline that answers questions in the demo is not the same thing...
Advice I Like: Lots of Ideas
By Steve Jones
“A multitude of bad ideas is necessary for one good idea” – from Excellent...
Building a DBA Agent for Your SQL Server Estate with MCP
Yesterday I gave a talk for MSSQLTips called “Building a DBA Agent for Your...
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Question of the Day
Adding new column with DEFAULT
Which number will the COUNT() return after executing the following statements:
DROP TABLE IF EXISTS #test; CREATE TABLE #test (id INT) INSERT INTO #test (id) SELECT * FROM GENERATE_SERIES(1, 3) AS gs ; ALTER TABLE #test ADD flag BIT CONSTRAINT DF_#test_flag DEFAULT 0; go UPDATE #test SET flag = 0 WHERE id = 1 UPDATE #test SET flag = 1 WHERE id = 2 INSERT INTO #test (id) VALUES (4) SELECT COUNT(*) FROM #test AS t WHERE flag = 0See possible answers