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sys.objects, sys.all_objects and sys.system_objects

August 22, 2009
Pinal Dave
SQL Tips and Tricks
DBA, SQL Server, SQL System Table, System Object

Compare sys.objects, sys.all_objects and sys.system_objects to find SQL Server user objects, system objects, and metadata visibility gaps.

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Network Service permissions.

SQL SERVER – FIX : ERROR : Cannot open database requested by the login. The login failed. Login failed for user ‘NT AUTHORITY\NETWORK SERVICE’.

August 20, 2009
Pinal Dave
SQL Tips and Tricks
SQL Error Messages, SQL Login, SQL Scripts, SQL Server Security

Getting Cannot open database requested by the login for NT AUTHORITY\NETWORK SERVICE? Map that login to your database under User Mapping.

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Joining Two History Tables at a Point in Time With FOR SYSTEM_TIME AS OF

August 19, 2009
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Joins, SQL Server, Temporal Table

Use FOR SYSTEM_TIME AS OF to join temporal tables at one UTC instant, compare range forms, and index the history lookup correctly.

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Evaluating a New SQL Server Version in One Week

August 16, 2009
Pinal Dave
SQL Tips and Tricks
DBA, SQL Migration, SQL Server, SQL Upgrade, Testing

Evaluating a New SQL Server Version in one week works when you install, restore, run a real workload, compare results, and write a decision.

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CDC tool window.

SQL SERVER – Introduction to Change Data Capture (CDC) in SQL Server 2008

August 15, 2009
Pinal Dave
SQL Tips and Tricks
Change Data Capture, Database, SQL Data Storage, SQL Scripts, SQL Server, SQL Utility

My first article on Simple-Talk introduces Change Data Capture in SQL Server 2008, which records INSERTs, UPDATEs and DELETEs in simple relational change tables.

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SUM DISTINCT: Equal Amounts Are Not Duplicate Rows

August 14, 2009
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL NULL, SQL Scripts, SQL Server

SUM DISTINCT totals different amounts without checking order identity. I’d establish the row grain first. Compare equal-priced orders, repeated copies and missing amounts.

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SQL SERVER - Reason for SQL Server Agent Starting Before SQL Server Engine Service

SQL SERVER – Reason for SQL Server Agent Starting Before SQL Server Engine Service

August 13, 2009
Pinal Dave
SQL Tips and Tricks
Database, SQL Server Agent, SQL Server Security

Why is SQL Server Agent starting before SQL Server Engine service? A user group member asked me, and here are my quick reasons, from jobs to OS tasks.

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