The following MAQL expressions are displayed in the Aggregation, Logical, and Filters tabs in the Custom Metric Editor.

**Aggregation Functions**

Aggregation functions are simple mathematical functions that can be performed on your facts to create metrics. An example metric returns the total amount won in sales by summing individual sales figures, which are stored as a fact.

COUNT is an aggregation function, except that it counts the number of distinct values of an attribute.

**Function****Description**AVG

Average of all values of a fact or metric. See AVG.

RUNAVG

Running average of all values of a fact or metric. See Running Total Functions.

CORREL

Correlation coefficient between two sets of values. See CORREL.

COUNT

Number of unique values in an attribute. See COUNT.

COVAR

Covariance between two sets of fact or metric values for sample populations. See Covariance Functions.

COVARP

Covariance between two sets of fact or metric values for biased populations. See Covariance Functions.

FORECAST

Calculates future trendline values using linear regression. See FORECAST - Add a Trend Line to a Report.

INTERCEPT

Y-intercept value for the least-squares linear regression. See Least-Squares Functions.

MAX

Maximum of all values of a fact or metric. See MAX.

RUNMAX

Running maximum of all values of a fact or metric. See Running Total Functions.

MEDIAN

Median value of all values of a fact or metric. See Running Total Functions.

MIN

Minimum of all values of a fact or metric. See MIN.

GREATEST Highest value from facts or metrics within a row. See GREATEST LEAST Lowest value from facts or metrics within a row. See LEAST RUNMIN

Running minimum of all values of a fact or metric. See Running Total Functions.

PERCENTILE

Computes the

*k*^{th}percentage of a set of values, where*k*is specified as the second parameter. See PERCENTILE.RSQ

The square of the correlation coefficient between two sets of values. See Least-Squares Functions.

SLOPE

The slope of the least-squares line for linear regression. See Least-Squares Functions.

STDEV

The standard deviation among a set of fact or metric values based on a sample of the population. See Standard Deviation Functions.

STDEVP

The standard deviation among a set of fact or metric values based for a biased population. See Standard Deviation Functions.

RUNSTDEV

The running standard deviation among a set of fact or metric values. See Running Total Functions.

SUM

Sum of all values of a fact or metric. See SUM.

RUNSUM

Running sum of all values of a fact or metric. See Running Total Functions.

VAR

Variance between two sets of values for a sample of the population. See Variance Functions.

VARP

Variance between two sets of values for a biased population. See Variance Functions.

RUNVAR

Running variance between two sets of values. See Running Total Functions.

**Numeric Functions**Numeric functions perform mathematical operations on facts or metrics. These functions can be simple arithmetic operators or more sophisticated calculations.

- Simple arithmetic operators: + - * /
See 2019-02-08_13-02-46_Adding, Subtracting, Multiplying, and Dividing.

**Function****Description**ABS

Absolute value of a fact or metric. See ABS.

EXP

Returns the constant e raised to the power of a fact or metric. See EXP.

IFNULL

Returns a replacement value if the fact or metric evaluates to a NULL value. See IFNULL.

LOG

Calculates the logarithm for a value, given the base specified in the second parameter. See LOG.

LN

Calculates the natural logarithm for a value. See LN.

POWER

Returns a fact or metric value raised to the value specified in the second parameter. See POWER.

RANK

Returns the numeric rank for fact or metric values in ascending, descending, default, or smallest-first order. See Rank.

ROUND

Rounds a fact or metric to the number of decimal places specified in the second parameter. See ROUND.

FLOOR

Rounds an input value to the nearest integer that is less than it. See FLOOR and CEILING.

CEILING

Rounds an input value to the nearest integer that is greater than it. See FLOOR and CEILING.

TRUNC

Truncates a number based on the number of decimal places specified in the second parameter. See TRUNC.

SIGN

Returns -1 for negative values, 0 for zero values, and 1 for positive values. See SIGN.

SQRT

Returns the square root of a value. Negative values generate a NULL value. See SQRT.

**Filter Expressions**Filters allow you to narrow the set of data from which a metric is computed by targeting attribute values you wish to include or exclude from consideration.

For example, a metric showing sales from a particular region.**Operators****Description**= (equals)

See Equals Operator.

<> (does not equal)

BETWEEN

Computes metric for input values between a specified range, including or excluding endpoints. See BETWEEN.

NOT BETWEEN

Computes metric for input values outside of a specified range, including or excluding endpoints. See NOT BETWEEN.

IN

Computes metric filtered by multiple listed values of the specified attribute. See IN.

NOT IN

Computes metric by specified attribute, excluding the listed attribute values. See NOT IN.

TOP

Returns topmost values, as specified by a percentage or a numeric count, of the input. See Rank Variations.

BOTTOM

Returns bottommost values, as specified by a percentage or a numeric count, of the input. See Rank Variations.

WITHOUT PARENT FILTER

Computes metric ignoring any filters applied at any level above the metric (metric, report, or dashboard). See PARENT Filters.

WITH PARENT FILTER

Computes metric applying filters at all levels above the metric (metric, report, or dashboard). This is the default behavior. See PARENT Filters.

WITH PARENT FILTER EXCEPT

Computes metric applying filters at all levels above the metric (metric, report, or dashboard), except for the specified filters. See PARENT Filters.

WITH PARENT FILTER EXCEPT

Computes metric ignoring filters all filters above the metric (metric, report, or dashboard), except for the specified filters. See PARENT Filters.

THIS

Floating reference to the current date-related attribute value. See THIS Macro.

PREVIOUS

Floating reference to the preceding date-related attribute value. See PREVIOUS Macro.

NEXT

Floating reference to the next date-related attribute value. See NEXT Macro.

LIKE Filters for the string pattern and is **case****sensitive.**ILIKE Filters for the string pattern and is **case****insensitive.**NOT LIKE Returns anything not defined in the string pattern and is **case****sensitive**.NOT ILIKE Returns anything not defined in the string pattern and is **case****insensitive.****Granularity Keywords**These keywords can be used to set the aggregation level for the MAQL expression.

**Keywords****Description**BY

Locks the aggregation level of the fact or metric, as specified by the attribute that is listed after BY. See BY.

BY ALL attributes

Locks the aggregation level of the fact or metric at the highest possible level of aggregation in the attribute hierarchy. See BY ALL.

BY ALL IN ALL OTHER DIMENSIONS

Locks the value of the fact or metric at the highest possible aggregation level across all dimensions. See BY ALL IN ALL OTHER DIMENSIONS.

By Attr, ALL IN ALL OTHER DIMENSIONS

Locks the aggregation level for the attribute or attributes specified after the BY keyword and at the highest level for all other dimensions. See BY attribute ALL IN ALL OTHER DIMENSIONS.

FOR Next

Refers to the values from the next time period specified as the parameter. See FOR Next.

For Previous

Refers to the values from the previous time period specified as the parameter. See FOR Previous.

For NextPeriod

Refers to the values from the next time period, as specified by the most granular attribute level in the report. See FOR NextPeriod.

For PreviousPeriod

Refers to the values from the previous time period, as specified by the most granular attribute level in the report. See FOR PreviousPeriod.

BY ALL IN ALL OTHER DIMENSIONS EXCEPT (FOR)

Functions as the BY ALL IN ALL OTHER DIMENSIONSBY keyword, except for the attributes specified after EXCEPT. The metric is permitted to be sliced and diced by these attributes, as long as they are present in the report. See BY ALL IN ALL OTHER DIMENSIONS EXCEPT FOR attribute.

WITHIN

Specifies a sub-group in the report, which may respect or ignore the report dimensionality defined by report attributes. See Rank.

ROWS BETWEEN This specifies a rolling window over which running total functions (for example RUNAVG) are computed. See Rolling Window. OVER .. TO See Advanced Data Permissions Use Cases. **Logical Expressions**

The following logical operators can be used to combine filters and apply conditions to your MAQL expressions.**Operators****Description**AND

If both expressions are true, then the result is true. Else, it is false. See AND.

CASE

Statement evaluates a series of conditions specified after a WHEN keyword. The first condition that evaluates to true forces the expression to return the result specified after the corresponding THEN keyword. See CASE.

IF/THEN/ELSE

Statement evaluates the condition specified after IF. If the result is true, the value expressed after THEN is returned. Otherwise, the value after ELSE (if present) is returned. See IF THEN ELSE.

NOT

However the expression evaluates, the opposite Boolean value is returned. If the expression is true, then the result is false, and vice-versa. See NOT.

OR

If either expression is true, then the result is true. Else, it is false. See OR.