Expressions can contain the following functions.
Functions can be combined using the Operators, and can be nested.
Functions are grouped in the following categories:
Conditional
COALESCE
COALESCE(value1, value2[, value10])
Returns the first non-null value. Can be used as a 'NullToZero' function if the second parameter is 0.
IIF
IIF(condition, truevalue, falsevalue)
If [condition] evaluates to true, null, return [truevalue] otherwise return [falsevalue]
Date / Time
DATEDIFF
DATEDIFF(datetime1, datetime2)
Returns [datetime1] - [datetime2] in days
Also see Extended use example below...
DATE_FORMAT
DATE_FORMAT(datetime, format)
Formats [datetime] according to [format]
DAY
DAY(datetime)
Day of month of [datetime] (1-31)
HOUR
HOUR(datetime)
Hour of [datetime] (0-23)
INTERVAL
INTERVAL(integer,[YEAR|MONTH|DAY|HOUR|MINUTE|SECOND])
Returns an interval that can be added to / subtracted from a date / time
Note: In an expression the Interval should be placed after the date ie Date + Interval, not Interval + Date
MINUTE
MINUTE(datetime)
Minute of [datetime] (0-59)
MONTH
MONTH(datetime)
Month of [datetime] (1-12)
NOW
NOW()
Current date and time
SECOND
SECOND(datetime)
Second of [datetime] (0-59)
UTC_TIMESTAMP
UTC_TIMESTAMP()
Current UTC date and time
Math
ABS
ABS(number)
Absolute value
ACOS
ACOS(number)
Inverse cosine
ASIN
ASIN(number)
Inverse sine
ATAN
ATAN(number)
Inverse tangent
CEIL
CEIL(number)
Smallest integer not less than argument
COS
COS(number)
Cosine
COT
COT(number)
Cotangent
DEGREES
DEGREES(number)
Radians to degrees
EXP
EXP(number)
Exponential
FLOOR
FLOOR(number)
Largest integer less than argument
LN
LN(number)
Natural logarithm
LOG
LOG(number1, number2)
Logarithm to base [number2]
MOD
MOD(number1, number2)
Remainder of [number1] / [number2]
PI
PI()
Pi constant
POWER
POWER(number1, number2)
[number1] raised to the power [number2]
RADIANS
RADIANS(number)
Degrees to radians
ROUND
ROUND(number, precision)
Round to [precision] decimal places
SIGN
SIGN(number)
Sign of the argument (-1, 0, 1)
SIN
SIN(number)
Sine
SQRT
SQRT(number)
Square root
TAN
TAN(number)
Tangent
Text
CONST.CURRENTSITE.URL
CONST.CURRENTSITE.URL()
Returns the domain name of the site. If the site is listening on multiple domain names, it will return the domain name that is being used by this particular request.
LEFT
LEFT(text, length)
Return first [length] characters in the string
LOWER
LOWER(text)
Convert text to lower case
LTRIM
LTRIM(text)
Remove leading spaces
REPEAT
REPEAT(text, number)
Repeat [text] the specified [number] times
REPLACE
REPLACE (string,find,replace)
Replaces instances in the [string] of the [find] text with the [replace] text
REVERSE
REVERSE(text)
Return reversed string
RIGHT
RIGHT(text, length)
Return last [length] characters in the string
RTRIM
RTRIM(text)
Remove trailing spaces
SUBSTR
SUBSTR(text, start[, length])
Return [length] characters from character [start] in the string
TRIM
TRIM(text)
Remove leading and trailing spaces
UPPER
UPPER(text)
Convert text to upper case
Extended use
Conditional expressions can be extended by combination.
For example, DATEDIFF only calculates the difference between two date-times in whole numbers of days. If you need to calculate the difference in a number of hours you can use DATEDIFF in combination with the HOUR() function as follows:
(DATEDIFF([t:hour difference]![finish time], [t:hour difference]![start time]) * 24) + (HOUR([t:hour difference]![finish time]) - HOUR([t:hour difference]![start time]))
