Gurwinder Singh

Gurwinder Singh has asked 10 questions and find answers to 80 problems.

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Gurwinder Singh questions

Why do asynchronous versions of a TCP echo server use 50x more memory than a synchronous one?
Do I have reordering issue and is it due to reference escape?

Gurwinder Singh answers

SQL finding minimum that is non-zero
Table column sorting based on NULL Value
MYSQL - get value from position of comma-separated-string
Creating IF statement that if "Variable" != NULL then WHERE clause
Manually polling streams in future implementation
Remove all alphanumeric words from a string in java
Get nth highest salary
Group by based on two columns , eliminate data set on another column which is not in group by
Extract only the current year in oracle
Is it really necessary to have GROUP BY in the SQL standard