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Bill Karwin's user avatar
Bill Karwin's user avatar
Bill Karwin's user avatar
Bill Karwin
  • Member for 17 years, 7 months
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I've written two books on SQL for Pragmatic Bookshelf:

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1439
Retrieving the last record in each group - MySQL
Aug 21, 2009
1169
What's the difference between identifying and non-identifying relationships?
Apr 18, 2009
1146
"INSERT IGNORE" vs "INSERT ... ON DUPLICATE KEY UPDATE"
Feb 14, 2009
821
Should I use != or <> for not equal in T-SQL?
Apr 6, 2009
746
How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?
Dec 8, 2008
733
Reason for Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause
Dec 22, 2012
689
SQL join: selecting the last records in a one-to-many relationship
Jan 21, 2010
669
Types in MySQL: BigInt(20) vs Int(20)
Jun 28, 2010
664
Is storing a delimited list in a database column really that bad?
Sep 6, 2010
532
Fetch the rows which have the Max value for a column for each distinct value of another column
Sep 23, 2008

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What is [sql-match-all]?

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76
Am I allowed to make a Stack Overflow clone?
45
Why don't relational databases support returning information in a nested format?
30
How to dive into an ugly database?
28
MySQL - How to check for a value in all columns
23
Is the concept of a clustered index in a DB design sensical when using SSDs?