https://straightforwardsql.com/categories/investigation/ Recent content in Investigation on StraightforwardSQL Hugo -- gohugo.io en-us Mon, 26 Aug 2024 15:03:17 +0200 https://straightforwardsql.com/posts/finding-nested-references/ Mon, 26 Aug 2024 15:03:17 +0200 https://straightforwardsql.com/posts/finding-nested-references/ Your stored procedure calls another procedure, which calls a view. How deep does it go? Here's a recursive CTE that traces the full dependency chain, including cross-database references. https://straightforwardsql.com/posts/misleading-ssms-connection/ Mon, 16 Jan 2023 11:09:15 +0100 https://straightforwardsql.com/posts/misleading-ssms-connection/ Read a cautionary tale on how I've deceived the SSMS, then promptly forgot about it and, in turn, ultimately confused myself. https://straightforwardsql.com/posts/unexpected-blocking-during-the-indexed-view-creation/ Mon, 05 Sep 2022 17:22:19 +0200 https://straightforwardsql.com/posts/unexpected-blocking-during-the-indexed-view-creation/ Here are the chronicles of my struggles to add a large Clustered index to a View without causing an outage. https://straightforwardsql.com/posts/what-is-causing-my-constraint-to-be-untrusted/ Fri, 24 Jun 2022 08:00:00 +0200 https://straightforwardsql.com/posts/what-is-causing-my-constraint-to-be-untrusted/ You fix an untrusted constraint, and by morning it's back to untrusted. Here's how to catch the process responsible, using Extended Events. https://straightforwardsql.com/posts/extended-events-timezones/ Mon, 21 Mar 2022 21:00:55 +0100 https://straightforwardsql.com/posts/extended-events-timezones/ Open an XE event file in SSMS and the timestamps stare back at you. Local time or server time? I spun up a container in another timezone to find out. https://straightforwardsql.com/posts/expecting-subvertations/ Wed, 08 Dec 2021 22:42:20 +0100 https://straightforwardsql.com/posts/expecting-subvertations/ How can 15 be less than 13? A perfect storm of bad assumptions about sql_variant comparison rules. https://straightforwardsql.com/posts/how-to-audit-data-modifications-with-surgical-precision/ Sat, 04 Dec 2021 22:34:30 +0100 https://straightforwardsql.com/posts/how-to-audit-data-modifications-with-surgical-precision/ A colleague needed to find who was changing a specific cell in a busy table. SQL Audit was too noisy, Query Store too vague. I found a way to combine triggers with Extended Events for surgical precision. https://straightforwardsql.com/posts/is-lock-in-rcsi-enabled-database/ Mon, 22 Nov 2021 14:15:33 +0100 https://straightforwardsql.com/posts/is-lock-in-rcsi-enabled-database/ I found an IS lock in a deadlock report on an RCSI database. That shouldn't be possible. Here's what caused it.