# Introduction

Smart columns are a great way for you to quickly calculate sums on your entire dataset, and have them just as editable as any other column!

# Caveats

There are a few things you should bear in mind,

• The formula can only lookup values in the current row.
• Smart columns evaluate from left to right.
If you want to reference another smart column, the referenced column should be to the left. This is to ensure there are no circular dependencies.
• Deleting a source column will result in a #REF lookup error, save the file to commit the smart columns and you can then delete source columns.

# Operators

The formula syntax supports these basic operations, the syntax is parsed in a left to right approach (not BODMAS). Please use brackets to achieve desired functionality.

OperatorDescription
-Subtract
/Divide
*Multiply
%Modulus
&Concatenate (Strings)
(Start group
)End group
A-ZReference column
12.3Decimal
FUNC(a,b)Functions (see below)

# List of functions

The formula box provides access to many functions that can be useful

FunctionDescription
CONCAT(a,b)Appends b onto a
LEFT(a,x)First x characters of a
RIGHT(a,b)Last x characters of a
SUBSTITUTE(a, b, c)Replaces all instances of b with c located in a
SUBTRACT(a,b)Subtracts b from a
MULTIPLY(a,b)Times a and b
DIVIDE(a,b)Divides a by b
MOD(a,b)Remainder of a by b
MAX(a,b)Greater of a or b
MIN(a,b)Lesser of a or b
ROUND(a,x)Rounds a to x decimal places
POW(a, b)Takes a to the power of b
IF(a, b, c)Checks a is true, returns b otherwise returns c
COL(x)Returns the Xth column
AND(a,b)Checks if a and b are both true
OR(a,b)Checks if a or b are either true
XOR(a,b)Checks if one of a or b is true
EQUALS(a,b)Checks if a and b are the same value
NOTEQUALS(a,b)Checks if a and b are different values
NOT(a)Checks if a is true, returns false, vice versa
GT(a,b)Checks if a is greater than b
LT(a,b)Checks if a is less than b

# Examples

### Add a £ symbol to the A column values

`'£'&A` ### Total a row and add a £ symbol

`'£'&A+B+C` ### Find the average of a set of columns

`(A+B+C)/3` ### Add 20% tax to a column

`A*1.2` 