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Jan-Mark Wams

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So far Jan-Mark Wams has created 9 blog entries.

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By | 2018-01-17T16:21:58+01:00 June 6th, 2016|Categories: Coding|

Rax string reduction, /cat(), on the IMPALA backend was not trivial to implement. The IMPALA documentation states: [crayon-5fbf1f1f746b8126371376/] Effectively this means no ORDER BY on GROUP_CONCAT in IMPALA. This [...]

Clock Arithmetic Still Hard

By | 2010-03-16T14:02:50+01:00 March 16th, 2010|Categories: Cool Bugs|

Clock or modular arithmetic is hard. Take a look at the two code snippets below. Both seem reasonable integer comparison functions modeled after strcmp(). However, the left one contains an [...]