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What Happens If the Clustered Index is Disabled? – Interview Question of the Week #291

August 30, 2020
Pinal Dave
SQL Interview Questions and Answers
Clustered Index, SQL Error Messages, SQL Index, SQL Scripts, SQL Server

Question: What Happens If the Clustered Index is Disabled?

Answer: If you disable the clustered index, you can’t retrieve data from the table.

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A young bird on the edge of its nest, wings half open, a red berry on the branch.

Giving Your First SQL Server Talk at a User Group

August 29, 2020
Pinal Dave
SQL Tips and Tricks
Career Advice, Professional Development, SQL Server, SQL User Group

Prepare your first SQL Server talk with one real problem, two resettable demos, a timed thirty-minute outline, a rehearsal, and a backup plan.

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Who Dropped

Who Dropped Your Table? – SQL in Sixty Seconds #112

August 28, 2020
Pinal Dave
SQL Video
SQL in Sixty Seconds, SQL Reports, SQL Scripts, SQL Server, SQL Server Security

Who Dropped My Table? – I was recently asked this question in Comprehensive Database Performance Health Check. Let us learn about it today.

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Single Column

Single Column Single Row and TABLE SCAN – SQL in Sixty Seconds #111

August 27, 2020
Pinal Dave
SQL Video
Execution Plan, SQL in Sixty Seconds, SQL Operator, SQL Performance, SQL Scripts, SQL Server

Can a single column and single row result do an entire table scan? I recently got this question in my  Comprehensive Database Performance Health Check.

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WITH NOLOCK

Dirty Read with NOLOCK – SQL in Sixty Seconds #110

August 26, 2020
Pinal Dave
SQL Video
SQL in Sixty Seconds, SQL Performance, SQL Scripts, SQL Server, Transaction Isolation

Recently I noticed that my client has been using the WITH NOLOCK hint with their queries and expecting that it will improve the queries performance.

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Human Error

Undo Human Errors in SQL Server – SQL in Sixty Seconds #109 – Point in Time Restore

August 25, 2020
Pinal Dave
SQL Video
SQL Backup and Restore, SQL in Sixty Seconds, SQL Scripts, SQL Server

In this blog post, we are going to talk about how to undo human errors in SQL Server with the help of Point in Time Recovery. Let us learn today.

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data type

Solve Puzzle about Data type – SQL in Sixty Seconds #108

August 24, 2020
Pinal Dave
SQL Puzzle
SQL Datatype, SQL in Sixty Seconds, SQL Scripts, SQL Server

A very interesting puzzle, where you see the data type conversion in action. I have previously blogged about this puzzle and had received amazing feedback.

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