Conversion Functions
nvl(anOption, aNonOption)
nvl takes a nullable (Option[]) as first parameter, and returns it
when not null, otherwise it returns the second (non nullable) argument.
Operators
Boolean :
not, isNull, isNotNull, between, ===, <, lt, >, gt, <=, lte, gte,
<>, exists, notExists, in, notIn
Math :
plus, +, minus, -, times, *, div, /
String :
|| (concatenation), lower, upper, like, regex
Aggregate Functions
max, min, sum, avg, sDevPopulation, sDevSample, varPopulation,
varSample, count(cols), countDistinct(cols)