Wave Analytics SAQL Reference

SAQL Overview
Enable SAQL Logs in the Browser
SAQL Basic Elements
SAQL Operators
SAQL Statements
SAQL Functions
Aggregate Functions
Date Functions
Math Functions
Windowing Functions
coalesce()
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Math Functions

To perform numeric operations in a SAQL query, use math functions.

You can use SAQL math functions in foreach statements and in the filter by clause after a foreach statement.

You can't use math functions in a group by clause or in an order by clause. You also can't use math functions in the filter by clause before a foreach statement, but you can use them after the foreach statement.

Functions

This table lists the SAQL math functions:
Function Description
abs(n) Returns the absolute number of n as a numeric value. n can be any real numeric value in the range of -1e308 <= n <= 1e308.
This example is valid:
1q = foreach q generate abs(pct_change) as pct_magnitude;
These examples are invalid:
1q = group q by abs(pct_change);
2q = order q by abs(pct_change);
ceil(n) Returns the nearest integer of equal or greater value to n. n can be any real numeric value in the range of -1e308 <= n <= 1e308.
This example is valid:
1q = foreach q generate ceil(miles) as distance;
These examples are invalid:
1q = group q by ceil(miles);
2q = order q by ceil(miles);
floor(n) Returns the nearest integer of equal or lesser value to n. n can be any real numeric value in the range of -1e308 <= n <= 1e308.
This example is valid:
1q = foreach q generate floor(miles) as distance;
These examples are invalid:
1q = group q by floor(miles);
2q = order q by floor(miles);
trunc(n[, m]) Returns the value of the numeric expression n truncated to m decimal places. m can be negative, in which case the function returns n truncated to -m places to the left of the decimal point. If m is omitted, it returns n truncated to the integer place. n can be any real numeric value in the range of -1e308 <= n <= 1e308. m can be an integer value between -15 and 15 inclusive.
This example is valid:
1q = foreach q generate trunc(Price, 2) as Price;
These examples are invalid:
1q = group q by trunc(Price, 2);
2q = order q by trunc(Price, 2);
round(n[, m]) Returns the value of n rounded to m decimal places. m can be negative, in which case the function returns n rounded to -m places to the left of the decimal point. If m is omitted, it returns n rounded to the nearest integer. For tie-breaking, it follows round half way from zero convention. n can be any real numeric value in the range of -1e308 <= n <= 1e308. m can be an integer value between -15 and 15, inclusive.
This example is valid:
1q = foreach q generate round(Price, 2) as Price;
These examples are invalid:
1q = group q by round(Price, 2);
2q = order q by round(Price, 2);
exp(n)

Returns the value of Euler's number e raised to the power of n, where e = 2.71828183… The smallest value for n that will not result in 0 is 3e-324. n can be any real numeric value in the range of -1e308 <= n <= 700.

These examples are valid:
1q = foreach q generate exp(value) as value;
2q = filter q by exp(value) < 5;
These examples are invalid:
1q = group q by exp(value);
2q = order q by exp(value);
log(m, n)

Returns the natural logarithm (base m) of a number n. The values m and n can be any positive, non-zero numeric value in the range 0 < m, n <= 1e308 and m ≠ 1.

The smallest number input allowed for m is >0, m!=1. The smallest number for m or n that will not produce 0 is log(10, 0.3e-323).

These examples are valid:
1q = foreach q generate log(10, Population) as Population;
2q = filter q by log(10, Population) < 15;
These examples are invalid:
1q = group q by log(10, Population);
2q = order q by log(10, Population);
power(m, n)

Returns m raised to the nth power. m, n can be any numeric value in the range of -1e308 <= m, n <= 1e308. Returns null if m = 0 and n < 0.

  • If m = 0, n must be a non-negative value.
  • If m < 0, n must be an integer value.
  • The result of power(m, n) must be within the range expressed by a float64 number.
These examples are valid:
1q = foreach q generate power(length, 2) as area, length;
2q = filter q by power(length, 2) > 10;
These examples are invalid:
1q = group q by power(length, 2);
2q = order q by power(length, 2);
sqrt(n)

Returns the square root of a number n. The value n can be any non-negative numeric value in the range of 0 <= n <= 1e308.

These examples are valid:
1q = foreach q generate sqrt(value) as value;
2q = filter q by sqrt(value) < 10;
These examples are invalid:
1q = group q by sqrt(value);
2q = order q by sqrt(value);