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Avoiding NULL in columns may make queries simpler.(a) True(b) FalseI had been asked this question in my homework.This interesting question is from Choosing Data Types for Efficient Queries topic in section Query Optimization of MySQL

Answer»

Correct ANSWER is (a) True

To explain: In MYSQL, avoiding the NULL in columns may make the queries simpler, since it is not required to check for NULL as a special case. Simpler queries generally can be PROCESSED more quickly.



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