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1d
comment What happens during “big” inserts on a table with a clustered composite key?
RE: Will SQL "move" the existing rows to maintain the clustering. No. It will get fragmented and you would need to reorganize/rebuild the index to regain it. Demo of that here
1d
comment Change rowguidcol property to a different column
@wBob - Of course! That makes sense. Unfortunately my hasty DV is locked in unless this answer is edited. But it could do with editing anyway to acknowledge the existence of ALTER TABLE MyTable ALTER COLUMN Col1 DROP ROWGUIDCOL; ALTER TABLE MyTable ALTER COLUMN Col2 ADD ROWGUIDCOL;
1d
comment Change rowguidcol property to a different column
This isn't the case. The ROWGUIDCOL can be removed from/added to columns.
Jul
24
comment How do I place leading zeros for numbers less than 10 without affecting those 10+?
@user44339 SQL Server doesn't have any such function.
Jul
23
comment Why is my select statement so slow?
What does SET STATISTICS IO ON;SET STATISTICS TIME ON; then running the query and waiting for it to finish show?
Jul
23
comment Why is my select statement so slow?
Whilst the query is running can you look in sys.dm_os_waiting_tasks to see if it is blocked?
Jul
21
comment Finding last time table was updated?
@SeanPerkins - See edited version
Jul
16
comment Is it possible for SQL Server to miss rows on a select * where PK = “value” query
@BrentOzar Craig Freedman has a similar demo for read committed here but don't think you could get a PK to return null with this type of issue.
Jul
13
comment Adding warning with sp_add_alert doesn't work with “Greater Than” and SQL Server 2014
I don't have 2014 installed at the moment. Does msdb.sys.sp_helptext 'dbo.sp_verify_performance_condition' shed any light on it? The relevant section in 2012 looks like this i.stack.imgur.com/W0rX6.png
Jul
13
comment Get the first and last names of all employee who entered the project at the same time as at least one other employee
Please provide the definition of the tables involved. It is not possible to answer this question at the moment unless we guess the existence of an EmployeeID column (and the name of it) in both tables.
Jul
11
comment Why a select from the tables, joined by a CASE statement, could be 7x slower?
What are your table definitions and execution plans? You mention indexes but your sample DDL doesn't contain any.
Jul
8
comment How to update ID=null values in table to incremental counter values?
@ErikHart - Er. What? It doesn't look like (or perform anything like) a cursor...
Jun
30
comment Join reorders results
And in SQL Server 2012 you'll find that even the order you observed without the join will likely no longer appear.
Jun
30
comment Is select * still a big no-no on SQL Server 2012?
An objection to * even if you need all the columns now is that later someone may add extra columns. Then your application will be bringing back a load of extra columns that aren't needed. And yes that issue still exists obviously.
Jun
29
comment Why should a CTE start with a semi-colon?
And sometimes the semi colon prefix breaks stuff
Jun
29
comment SQL Server: Are there any performance benefits from indexing a table <8kb in size?
@BIMonkey - Yes if both the non covering non clustered index and the base table itself (CI or heap) both fit on a single page you'd need to factor in the cost of another page read that would probably outweigh the benefit of binary seek. For tables this small it is exceedingly likely to matter anyway. There are always bigger fish to fry than this!
Jun
25
comment When to use TINYINT over INT?
@GeorgeShouse Demonstration of that here
Jun
23
comment Changing Databases Dynamically using Variables
Related SO question. stackoverflow.com/q/727788/73226
Jun
23
comment Changing Databases Dynamically using Variables
@Max No. The scope gets reset when the exec finishes. So you end up back where you started. To use this approach all your remaining code would also need to be appended after the use.
Jun
22
comment Reporting Services buttons show up one under the other instead of side-by-side
Looks like you need to install up to at least SP1 CU8 or hack around with some files