ISEVEN Function
Returns true
if the argument is an even value. Argument can be an Integer, a function returning Integers, or a column reference.
Since the function returns a Boolean value, it can be used as a function or a conditional.
Wrangle vs. SQL: This function is part of Wrangle, a proprietary data transformation language. Wrangle is not SQL. For more information, see Wrangle Language.
Basic Usage
Integer literal value:
iseven('4')
Output: Returns the value true
.
Column reference value:
iseven(errorCount)
Output: Returns true
if the value in the errorCount
column is an even number.
Syntax and Arguments
iseven(int_value)
Argument | Required? | Data Type | Description |
---|---|---|---|
int_value | Y | integer | This value can be an Integer, a function returning an Integer, or a column reference. |
For more information on syntax standards, see Language Documentation Syntax Notes.
int_value
Name of the columns, expressions, or literals to compare.
Missing values generate missing string results.
Usage Notes:
Required? | Data Type | Example Value |
---|---|---|
Yes | Column reference, function, or Integer literal value | myColumn |
Examples
Tip
For additional examples, see Common Tasks.
Example - Basic Equal and Notequal Functions
This example demonstrates comparison functions.
Functions:
Item | Description |
---|---|
EQUAL Function | Returns |
NOTEQUAL Function | Returns |
ISEVEN Function | Returns |
ISODD Function | Returns |
In this example, the dataset contains current measurements of the sides of rectangular areas next to the size of those areas as previously reported. Using these functions, you can perform some light analysis of the data.
Source:
sideA | sideB | reportedArea |
---|---|---|
4 | 14 | 56 |
6 | 6 | 35 |
8 | 4 | 32 |
15 | 15 | 200 |
4 | 7 | 28 |
12 | 6 | 70 |
9 | 9 | 81 |
Transformation:
In the first test, you are determining if the four-sided area is a square, based on a comparison of the measured values for sideA
and sideB
:
Transformation Name |
|
---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | EQUAL(sideA, sideB) |
Parameter: New column name | 'isSquare' |
Next, you can use the reported sides to calculate the area of the shape and compare it to the area previously reported:
Transformation Name |
|
---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | NOTEQUAL(sideA * sideB, reportedArea) |
Parameter: New column name | 'isValidData' |
You can also compute if the reportedArea can be divided into even square units:
Transformation Name |
|
---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | ISEVEN(reportedArea) |
Parameter: New column name | 'isReportedAreaEven' |
You can test if either measured side is an odd number of units:
Transformation Name |
|
---|---|
Parameter: Formula type | Single row formula |
Parameter: Formula | IF((ISODD(sideA) == true) OR (ISODD(sideB) == true),TRUE,FALSE) |
Parameter: New column name | 'isSideOdd' |
Results:
sideA | sideB | reportedArea | isSquare | isValidData | isReportedAreaEven | isSideOdd |
---|---|---|---|---|---|---|
4 | 14 | 56 | FALSE | FALSE | TRUE | FALSE |
6 | 6 | 35 | TRUE | TRUE | TRUE | FALSE |
8 | 4 | 32 | FALSE | FALSE | TRUE | FALSE |
15 | 15 | 200 | TRUE | TRUE | TRUE | TRUE |
4 | 7 | 28 | FALSE | FALSE | TRUE | TRUE |
12 | 6 | 70 | FALSE | TRUE | TRUE | FALSE |
9 | 9 | 81 | TRUE | FALSE | FALSE | FALSE |