Yash Sharma created DRILL-247:
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             Summary: New Math Functions: log, sqrt, cbrt, rand, round, exp, e, 
pi, pow
                 Key: DRILL-247
                 URL: https://issues.apache.org/jira/browse/DRILL-247
             Project: Apache Drill
          Issue Type: Improvement
            Reporter: Yash Sharma


Improving the math functions collection with more functions:

log: the natural logarithm (base e) of an expression
log10: base 10 logarithm
sqrt: square root
cbrt: cube root
rand(): returns random number from 0-1.
round(a)
exp(a): exponential e^a
e(): returns value of e
pi(): returns value of pi
pow(a, p): returns a^p

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