[Video] Office Hours: Really Good Questions Edition

Videos

Y’all were on fire in this one! You posted great questions at https://pollgab.com/room/brento and I worked through ’em:

Here’s what we covered:

  • 00:00 Start
  • 04:06 DislikeEntityFramework: In AWS RDS, we inherited a 9TB table with uniqueidentifier as clustered PK, another column is an identity int but not needed. How can we quickly fix this? Drop existing identity, add new bigint identity PK clustered, and make NC index on uniqueidentifier. 0% downtime. Tips?
  • 05:16 mailbox: I’ve noticed more job listings for PostgreSQL DBA or Data professional on indeed.com. Weird thing– many of these listings ask that you be able to write SP or translate legacy SP to run on PG SQL. Is the job scope of a DBA becoming broader, or do you think these are mis-titled?
  • 06:13 Eh? Aye: You wrote about Postgres/SQL licensing. As compute (CPU & RAM) is getting cheaper (physically & potentially in the Cloud too) at what point will skills in tuning & execution plans etc become redundant due to having a big enough hammer available to the engine to push them through?
  • 08:29 mailbox: Are there any OLAP DBMS (clickhouse for example) that can compete performance-wise with SQL Server. Let’s assume SQL Server is handling a similar workload and taking advantage of columnstore indexing.
  • 09:19 Wren: Why does SSMS query plan show scalar UDF’s in estimated query plan but not in actual query plan?
  • 10:44 Lori: What are the top ways AI will affect SQL DBA’s?
  • 11:13 Right Said Fred: Is there a good way to identify indexes with hot columns?
  • 12:10 SQL_bob: Hey Brent, Do you hide your politics at work? How do you avoid getting roped into a political discussion? I have a coworker who is constantly trying to get a rise out of his fellow coworkers.
  • 13:57 Stone Breaker: Does Azure SQL DB compare favorably with AWS Aurora PostgreSQL for developing new applications?
  • 14:41 Vitali: Have you ever considered offering Office Hours additionally as a podcast?
  • 16:18 Jolene: What is your opinion of scoped configuration LAST_QUERY_PLAN_STATS ? Safe to turn on?
  • 17:47 ZappyDBCC: Hello Brent, do you often come across customers who haven’t activated their QueryStore in production ? If so, what do you advise them to do in particular with regards to risks of activating it (if any) ?
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