Expressions

Junior Level Interview Questions

Interview Questions (26)

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When extracting data from a PDF, the date is returned as a string, for example, "May 12th 2026" or "Apr 4th 2026". However, the corresponding field in the database is of type Date, so passing the string directly will not work.How would you convert this extracted string into a valid Appian Date before writing it to the database?

I would use an expression rule to convert the extracted date string into an Appian Date before passing it to the database.For example, if the extracted date is "May 12th 2026", I w...

A UAT user shares a production error screenshot displaying the generic message: "Contact your administrator." It includes an error number (e.g., 954c8:bb743). You do not have production screen or data access, but you do have access to the Development environment and the production server logs. How would you debug and resolve this issue?

Locate the Root Cause in the LogsAnalyze stdout Logs: I will first check the "tomcat-stdOut.log" file on the production server to locate the time of the error and se...

Explain Group rule in Appian - For group memberships, Or How to manage users in group dynamically?

There is a feature in Appian which could be called as "Automatic membership rule" - Officially called as Membership Rules - allows us to add users by rule based criteria, and could...

Expressions Appian Interview Questions — Junior Level

Expressions

Interview Questions (26)

Explain Group rule in Appian - For group memberships, Or How to manage users in group dynamically?

Given a string, write a program to count the frequency of each word and display the word along with its count.Input: "Hello, test string, test"Output: Hello - 1test - 2string - 1

In Appian, Write an expression to check whether it is a Palindrome or Not ?

In Appian, Find vowels in the given array using expression rule. Expected output : { { word: "Apple", vowels: {"A","e"} }, { word: "Sky", vowels: {} }, { word: "Orange", vowels: {"O","a","e"} }, { word: "Fly", vowels: {} }}

How to remove characters from a string ?You have a list of strings like:{"ABHello", "ABAppian", "ABWorld"}Each value starts with "AB", and the goal is to remove this prefix from every string.

Difference between now() and today() ?

What is decision object in Appian and how it is used?

You need to print the number between 1300 and 1600

You need to print all the number divided by 13

How will you print the date in MMM-DD-YYYY (Jan-01-2025) format ?

Find the duplicate words from the paragraph Input - A big buck bucket over the big bug bucket Output- big bucket

Given input n, print {n, n-1.....1} eg. n = 5, output = {5, 4, 3, 2, 1}

In Appian, write an expression rule to find duplicate values from an integer array. Input: { 1, 2, 3, 1, 4, 8, 9, 4, 3 }, Expected Output: {1,3,4}.

Using Appian expressions, how would you generate a numeric triangle pattern?

How can you dynamically display the last 5 years in Appian?

How can we split a comma-separated string fetched from the database (e.g : "Java,Python,SAIL,Dart") into a list and display it as a dropdown in an Appian interface?

How do you remove duplicate values in an array ?

How do you compare two values in Appian with case sensitivity?

What is the difference between the len(), count(), and length() functions in Appian, and when should each be used?

In Appian, how would you generate a list of numbers from 1 to 500, and then display only every 100th number (i.e., 100, 200, 300, 400, 500) from that list using Appian expressions?

You are given a custom list of maps in Appian, where each map contains fields like name and id. Some of the name values are either null or empty strings. How would you remove the entries that have a null or empty name field using Appian expressions?

In Appian, suppose you have a list of a!map objects with fields name and id. How can you sort this list alphabetically by the name field?

Given an array with null values, how would you return a new array without any nulls?

Expressions

Interview Questions (26)

Explain Group rule in Appian - For group memberships, Or How to manage users in group dynamically?

Given a string, write a program to count the frequency of each word and display the word along with its count.Input: "Hello, test string, test"Output: Hello - 1test - 2string - 1

In Appian, Write an expression to check whether it is a Palindrome or Not ?

In Appian, Find vowels in the given array using expression rule. Expected output : { { word: "Apple", vowels: {"A","e"} }, { word: "Sky", vowels: {} }, { word: "Orange", vowels: {"O","a","e"} }, { word: "Fly", vowels: {} }}

How to remove characters from a string ?You have a list of strings like:{"ABHello", "ABAppian", "ABWorld"}Each value starts with "AB", and the goal is to remove this prefix from every string.

Difference between now() and today() ?

What is decision object in Appian and how it is used?

You need to print the number between 1300 and 1600

You need to print all the number divided by 13

How will you print the date in MMM-DD-YYYY (Jan-01-2025) format ?

Find the duplicate words from the paragraph Input - A big buck bucket over the big bug bucket Output- big bucket

Given input n, print {n, n-1.....1} eg. n = 5, output = {5, 4, 3, 2, 1}

In Appian, write an expression rule to find duplicate values from an integer array. Input: { 1, 2, 3, 1, 4, 8, 9, 4, 3 }, Expected Output: {1,3,4}.

Using Appian expressions, how would you generate a numeric triangle pattern?

How can you dynamically display the last 5 years in Appian?

How can we split a comma-separated string fetched from the database (e.g : "Java,Python,SAIL,Dart") into a list and display it as a dropdown in an Appian interface?

How do you remove duplicate values in an array ?

How do you compare two values in Appian with case sensitivity?

What is the difference between the len(), count(), and length() functions in Appian, and when should each be used?

In Appian, how would you generate a list of numbers from 1 to 500, and then display only every 100th number (i.e., 100, 200, 300, 400, 500) from that list using Appian expressions?

You are given a custom list of maps in Appian, where each map contains fields like name and id. Some of the name values are either null or empty strings. How would you remove the entries that have a null or empty name field using Appian expressions?

In Appian, suppose you have a list of a!map objects with fields name and id. How can you sort this list alphabetically by the name field?

Given an array with null values, how would you return a new array without any nulls?