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How I Know If I am DBOWNER or Not in SQL Server? – Interview Question of the Week #222

April 28, 2019
Pinal Dave
SQL Interview Questions and Answers
SQL Scripts, SQL Server, SQL Server Security

How do I know if I am DBOWNER or not in SQL Server? A DBA worried about permissions before my changes, so we ran this simple script to check db_owner membership.

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An archery target with four nested rings in a field, one arrow in the red center and others in outer rings

Period-to-Date Totals: Today, Week, Month and Year in One Scan

April 27, 2019
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Function, SQL Reports, SQL Server

Calculate period-to-date totals with shared scan boundaries, Monday-based weeks, and older date arithmetic for SQL Server reports.

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The Handful of Counters That Actually Matter

April 24, 2019
Pinal Dave
SQL Performance
Best Practices, Database, SQL Scripts, SQL Server

Make SQL Server monitoring useful by relating waits, batch activity, memory indicators, and file latency to the same workload and observation window.

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Peak Concurrency: The Busiest Moment From Start and End Times

April 23, 2019
Pinal Dave
SQL Tips and Tricks
Best Practices, SQL Performance, SQL Server

Counting sessions per day tells you nothing about overlap. Here is a small event-sweep query that finds the busiest moment, with the tie trap explained.

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Pulling Values Out of Text With REGEXP_SUBSTR and REGEXP_INSTR

April 22, 2019
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL Scripts, SQL Server, SQL String

Extract codes with REGEXP_SUBSTR in SQL Server 2025, locate matches, select occurrences and capture groups, and validate text boundaries.

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A round wooden piece fits its matching opening while other shapes need different openings

How to check the ANSI Compatibility of SQL Server Queries? – Interview Question of the Week #221

April 21, 2019
Pinal Dave
SQL Interview Questions and Answers
Compatibility Level, SQL Scripts, SQL Server

How do you check the ANSI compatibility of SQL Server queries? A client asked me this unique question, and the FIPS standard helps keep your code portable.

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Many-to-Many Merge Join and the Worktable in STATISTICS IO

April 18, 2019
Pinal Dave
SQL Performance
Execution Plan, SQL Joins, SQL Performance, SQL Server

Diagnose a many-to-many merge join and its worktable, verify true uniqueness, and compare join choices without changing legitimate matches.

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