add

Start an addition function

datediff

Start a function that return the duration between 2 dates

constant

Add a constant parameter to the current function

field

Add a field parameter to the current function

endfunc

End the current function

build

Return the completed function definition

subtract

Start a subtraction function

length

Start a length function

dayofweek

Start a function that returns the day of the week of a given date

divide

Start a division function

concat

Start a concatenation function

multiply

Start a multiplication function