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SQL math functions Math functions Use math functions to perform mathematical operations in SQL queries.
influxdb_cloud_dedicated
name parent
Math sql-functions
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The InfluxDB SQL implementation supports the following math functions for performing mathematic operations:

abs

Returns the absolute value of a number.

abs(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View abs query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT abs(temp) AS abs FROM home LIMIT 3
abs
21
23
22.7

{{% /expand %}} {{< /expand-wrapper >}}

acos

Returns the arc cosine or inverse cosine of a number.

acos(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View acos query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT acos(temp * .01) AS acos FROM home LIMIT 3
acos
1.359221367036801
1.3387186439321834
1.3418001704498232

{{% /expand %}} {{< /expand-wrapper >}}

asin

Returns the arc sine or inverse sine of a number.

asin(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View asin query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT asin(temp * .01) AS asin FROM home LIMIT 3
asin
0.2115749597580956
0.23207768286271319
0.22899615634507337

{{% /expand %}} {{< /expand-wrapper >}}

atan

Returns the arc tangent or inverse tangent of a number.

atan(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View atan query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT atan(temp * .01) AS atan FROM home LIMIT 3
atan
0.206992194219821
0.22606838799388393
0.22321725383717603

{{% /expand %}} {{< /expand-wrapper >}}

atan2

Returns the arc tangent or inverse tangent of expression_y / expression_x.

atan2(expression_y, expression_x)
Arguments
  • expression_y: First numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.
  • expression_x: Second numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View atan2 query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT atan2(temp, hum) AS atan2 FROM home LIMIT 3
atan2
0.5292859396993504
0.5660139100632452
0.5613335864315844

{{% /expand %}} {{< /expand-wrapper >}}

ceil

Returns the nearest integer greater than or equal to a number.

ceil(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View ceil query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT ceil(temp) AS ceil FROM home LIMIT 3
ceil
21
23
23

{{% /expand %}} {{< /expand-wrapper >}}

cos

Returns the cosine of a number.

cos(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View cos query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT cos(temp) AS cos FROM home LIMIT 3
cos
-0.5477292602242684
-0.5328330203333975
-0.7591100556583898

{{% /expand %}} {{< /expand-wrapper >}}

exp

Returns the base-e exponential of a number.

exp(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to use as the exponent. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View exp query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT exp(temp) AS exp FROM home LIMIT 3
exp
1318815734.4832146
9744803446.248903
7219127949.943179

{{% /expand %}} {{< /expand-wrapper >}}

floor

Returns the nearest integer less than or equal to a number.

floor(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View floor query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT floor(temp) AS floor FROM home LIMIT 3
floor
21
23
22

{{% /expand %}} {{< /expand-wrapper >}}

ln

Returns the natural logarithm of a number.

ln(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View ln query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT ln(temp) AS ln FROM home LIMIT 3
ln
3.044522437723423
3.1354942159291497
3.122364924487357

{{% /expand %}} {{< /expand-wrapper >}}

log

Returns the base-x logarithm of a number.

log([base, ]numeric_expression)

Arguments

  • base: Base numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators. Default is 10.
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View log query example" %}}

The following example uses the sample data set provided in the Get started with InfluxDB tutorial.

SELECT
  temp,
  log(2, temp) AS temp_log2,
  log(4, temp) AS temp_log4,
  log(temp) AS temp_log10
FROM home
LIMIT 3
temp temp_log2 temp_log4 temp_log10
21 4.392317422778761 2.1961587113893803 1.322219294733919
23 4.523561956057013 2.2617809780285065 1.3617278360175928
22.7 4.504620392403553 2.2523101962017766 1.3560258571931225

{{% /expand %}} {{< /expand-wrapper >}}

log10

Returns the base-10 logarithm of a number.

log10(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View log10 query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT log10(temp) AS log10 FROM home LIMIT 3
log10
1.3222192947339193
1.3617278360175928
1.3560258571931227

{{% /expand %}} {{< /expand-wrapper >}}

log2

Returns the base-2 logarithm of a number.

log2(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View log2 query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT log2(temp) AS log2 FROM home LIMIT 3
log2
4.392317422778761
4.523561956057013
4.504620392403552

{{% /expand %}} {{< /expand-wrapper >}}

power

Returns a base expression raised to the power of an exponent.

power(base, exponent)
Aliases
  • pow
Arguments
  • base: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.
  • exponent: Exponent numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View power query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT power(temp, hum * .1) AS power FROM home LIMIT 3
power
55817.099910217476
85007.01501569824
78569.38332452129

{{% /expand %}} {{< /expand-wrapper >}}

pow

Alias of power.

random

Returns a random float value between 0 and 1. The random seed is unique to each row.

random()

{{< expand-wrapper >}} {{% expand "View random query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT temp * random() AS random FROM home LIMIT 3

{{% note %}} Due to the nature of the function, your results will not match the results below. {{% /note %}}

random
0.5030770374815072
12.938847036567514
2.8204596545385385

{{% /expand %}} {{< /expand-wrapper >}}

round

Rounds a number to the nearest integer.

round(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View round query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT round(temp) AS round FROM home LIMIT 3
round
21
23
23

{{% /expand %}} {{< /expand-wrapper >}}

signum

Returns the sign of a number. Negative numbers return -1. Zero and positive numbers return 1.

signum(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View signum query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT signum(temp - 23) AS signum FROM home LIMIT 3
signum
-1
1
-1

{{% /expand %}} {{< /expand-wrapper >}}

sin

Returns the sine of a number.

sin(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View sin query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT sin(temp) AS sin FROM home LIMIT 3
sin
0.8366556385360561
-0.8462204041751706
-0.6509623056662469

{{% /expand %}} {{< /expand-wrapper >}}

sqrt

Returns the square root of a number.

sqrt(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View sqrt query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT sqrt(temp) AS sqrt FROM home LIMIT 3
sqrt
4.58257569495584
4.795831523312719
4.764451699828638

{{% /expand %}} {{< /expand-wrapper >}}

tan

Returns the tangent of a number.

tan(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View tan query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT tan(temp) AS tan FROM home LIMIT 3
tan
-1.5274985276366035
1.5881530833912738
0.8575335036257101

{{% /expand %}} {{< /expand-wrapper >}}

trunc

Truncates a number toward zero (at the decimal point).

trunc(numeric_expression)
Arguments
  • numeric_expression: Numeric expression to operate on. Can be a constant, column, or function, and any combination of arithmetic operators.

{{< expand-wrapper >}} {{% expand "View trunc query example" %}}

The following example uses the sample data set provided in Get started with InfluxDB tutorial.

SELECT trunc(temp) AS trunc FROM home LIMIT 3
trunc
21
23
22

{{% /expand %}} {{< /expand-wrapper >}}