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Execution plan of a query with a single row and single table.

SQL SERVER – Puzzle – Why Such a Complicated Execution Plan for a Single Row, Single Table Query?

July 13, 2018
Pinal Dave
SQL Puzzle
Execution Plan, SQL Scripts, SQL Server

A simple puzzle: why does SQL Server show such a complicated execution plan for a single row, single table query on WideWorldImporters? Try to solve it.

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Several rows of clay discs waiting for the single working position of an arbor press

Serial Zones in Parallel Plans: Where One Thread Does the Work

July 12, 2018
Pinal Dave
SQL Tips and Tricks
Best Practices, Parallel, SQL Server

A parallel plan can still leave one core busy. See a harmless serial zone, a costly one, and how to read per-thread rows from the plan.

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Gouache painting of a wooden wind-up toy train on a short curved track with its last carriage painted vermilion tipped off the rail

Event ID 7034: MSSQLSERVER Service Terminated Unexpectedly

July 10, 2018
Pinal Dave
SQL Tips and Tricks
SQL Error Messages, SQL Log, SQL Server, SQL Server Services, Starting SQL

Event ID 7034 reports that the MSSQLSERVER service terminated unexpectedly. The Application log held an APPCRASH entry with exception code 0xC0000005, an access violation. A clean restart of the server cleared the problem.

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SQL SERVER - Backup to URL - Script to Generate the Create Credential and Backup Command using Access Keys

SQL SERVER – Backup to URL – Script to Generate the Create Credential and Backup Command using Access Keys

July 9, 2018
Pinal Dave
SQL Tips and Tricks
SQL Azure, SQL Backup and Restore, SQL Error Messages, SQL Scripts, SQL Server, SQL Server Security

Backup to URL can use a SAS token or access keys. Here is a script that builds the CREATE CREDENTIAL and BACKUP commands from your Azure storage access keys.

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A varied sequence of wooden tokens drawn from a bag beside a brass padlock

How to Generate Random Password in SQL Server? – Interview Question of the Week #181

July 8, 2018
Pinal Dave
SQL Interview Questions and Answers
SQL Random, SQL Scripts, SQL Server, SQL Server Security

Question: How to Generate Random Password in SQL Server?

Answer: This is a fantastic question and here is the script to generate a random password in SQL Server

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SQL SERVER Analysis Services - Unable to Start Service. Error: The Filename, Directory Name, or Volume Label Syntax is Incorrect

SQL SERVER Analysis Services – Unable to Start Service. Error: The Filename, Directory Name, or Volume Label Syntax is Incorrect

July 7, 2018
Pinal Dave
SQL Tips and Tricks
Computer Network, SQL Analysis Services, SQL Error Messages, SQL Server, SQL Server Services, Starting SQL

SQL Server Analysis Services would not start: the filename, directory name, or volume label syntax is incorrect. Here is what the event log showed and the fix.

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A capped nut driver beside several visibly connected mechanical components

Listing Server Credentials and Where They Are Used

July 6, 2018
Pinal Dave
SQL Tips and Tricks
Best Practices, SQL Performance, SQL Server

Credentials hide their secrets but still tell you who depends on them. Build a small demo and follow a credential to its login, proxy and job step.

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