# Tools and Scripts
Most open source, all free. Scripts, tools, and resources pertinent to SQL Server and beyond.
| Table of Contents |
|---|
| T-SQL Scripts |
| References |
| SSMS Plugins |
| Tools |
| Education |
| Articles |
| Other |
# T-SQL Scripts
- Ola's Maintenance Scripts (opens new window)
- Brent Ozar's First Responder Kit (opens new window)
- Glenn Berry's Diagnostic Queries (opens new window)
- SQL CAT's Tiger Tool Box (opens new window)
- Adam Machanic's sp_WhoIsActive (opens new window)
- Aaron Bertrand's sp_InEachDB (opens new window) - replacement for the undocumented sp_MSForEachDB (opens new window)
- Jeff Moden's DelimitedSplit8k (opens new window) - string splitter function
- John McCall's DBA MultiTool (opens new window) - Suite of administrative scripts
# References
- SQL Style Guide (opens new window)
- T-SQL Style Guide (opens new window)
- DBATools Build Reference (opens new window) - Open source SQL Server build tracker
- SQLServerUpdates.com (opens new window) - Brent Ozar's SQL Server build tracker
- MSSQL Waitopedia (opens new window)
- Module Signing Info (opens new window)
- SQL Server & Azure Database Permissions Poster (opens new window)
- The Data Loading Performance Guide (opens new window)
- Database Hiearachy of Monitoring Infographic (opens new window)
- Scheduling Powershell Tasks With SQL Agent (opens new window)
- ColumnScore.com (opens new window) - Quiz to find if you should use columnstore indexes on your table
# SSMS Plugins
# Azure Data Studio Extensions
Micosoft curates a list of first and third party extensions here (opens new window).
# Tools
# Education
- Vertabelo's Academy (opens new window) - Various database patterns and schema design examples
- 5 Rules of Normalization by Marc Rettig (opens new window)
- SQL Murder Mystery (opens new window) - Introduction to SQL as a murder mystery story
- Select Star (opens new window) - Interactive introduction to SQL
# Articles
# AlwaysOn
- The AlwaysOn Health Model Part 2 - Extending the Health Model (opens new window)
- When Always On Isn't: Handling Outages In Your Application (opens new window) by Brent Ozar
- SQL Server 2016/2017: Availability group secondary replica redo model and performance (opens new window) - Detailed information on parallelism in redo worker threads
# Patterns / Anti-Patterns
- SQL Server UPSERT Patterns and Antipatterns (opens new window) by Michael J Swart (opens new window)
- T-SQL Code Smells (opens new window) by Phil Factor (opens new window)
- Fighting Evil in Your Code: Comments on Comments (opens new window) by Michael Sorens (opens new window)
# Misc
- Erland Sommarskog's articles on SQL Server (opens new window)
- Modern Data Analysis: Don't Trust Your Spreadsheet (opens new window)
- T-SQL Interview Questions (opens new window) by Jeremy Kadlec (opens new window)
- Developer Interview Questions (opens new window) by Brent Ozar
- Tuning Cost Threshold (opens new window)
- The Security of Modern Password Expiration: An Algorithmic Framework and Empirical Analysis (opens new window)
# Other
- Wide World Importer Database (opens new window) - Successor to the AdventureWorks sample database for SQL Server 2016+
- Stack Overflow Database (opens new window) - Brent Ozar's packaging of the Stack Overflow database
- idownvotedbecau.se (opens new window) - Linkable downvoting rationale for Stack Exchange comments.
- Open Source Pull Request Template (opens new window) - Whimsical choose-your-own-adventure that climaxes with a customized pull request template by Tal Ater (opens new window)
- SQL Server Kit (opens new window) - Compendium of everything SQL Server & R by Konstantin Taranov (opens new window)