Heavy rain did not stop Ahmedabad: around 300 people came to Community Tech Days on July 24, 2010, many standing at the back. Thank you to a great community.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
SQL SERVER – Parallelism Query in Database
Feodor asked how to get a parallelism query plan on a dual core computer using AdventureWorks. Here is the T-SQL I used to reproduce a parallel plan.
Heap Tables: When a Table Without a Clustered Index Hurts
Find heap tables, inspect forwarded records and empty-page behavior, and choose between a clustered index and a planned rebuild.
SQL SERVER – Computed Column – PERSISTED and Performance – Part 2
Part 2 on PERSISTED and performance shows the other side: when non-persisted computed columns give better performance than PERSISTED ones.
SQL SERVER – Computed Column – PERSISTED and Performance
My computed column series in one list: PERSISTED versus non-persisted for storage and speed, and how an index on the column improves performance.
Relational Division in T-SQL: Customers Who Bought Every Product
Solve relational division with counts and double NOT EXISTS, then handle duplicates, NULL values, empty requirements, and exact matching.
SQL SERVER – Introduction to BINARY_CHECKSUM and Working Example
BINARY_CHECKSUM helps detect changes in a row. My working example shows how it works and why it misses a value changed from A to B and back to A.
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