Library of Useful (Difficult) SQL scripts [closed]

Answer 1

Check Out SQLCAT.com (MS SQL BEST PRACTICES TEAM)

Answer 2

Joe Celko's SQL Puzzles and Answers

The Art of SQL (slight Oracle bias)

Answer 3

Some Administration stuff

Glenn Berry: Five Very Useful Index Selection Queries for SQL Server 2005

• Find "Missing" Indexes for the entire instance of SQL Server
• Find "Missing" Indexes for a single table
• Examine the current index structure for a single table
• Look at index usage for a single table
• Look for possible bad indexes inside the entire current database
• Drill into your workload (Bonus)

SQL Server Central: Seven Monitoring Scripts

• Failed jobs report
• Free space by drive
• Disabled jobs
• Running jobs
• Server role members
• Last backup date
• SQL Log

And last, but not least this resource: SQL Server Programming Hacks - 100+ List

Answer 4

Sql Cookbook has a variety of interesting example, though some will undoubtedly be unsupported by your RDBMS of choice. O'Reilly also has a T-SQL Cookbook, but I've never personally read it.

Answer 5

Forgive me for the self-advertising, but I have posted a few on my blog (http://progblog.wordpress.com) because I'm rubbish at SQL and it's a good place to store things I know I'll need in the future :-) If anyone has anything more substantial then please post, I'm as keen as anyone to get hold of something like this!

I would guess that a copy of the "SQL Cookbook" would help too.

Answer 6

I've had some use of these SQL "hacks" for Oracle a couple of times.

Concatenate as grouping function

In query data generation for joining purposes