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What is Aggregate Query in Salesforce?

What is Aggregate Query in Salesforce?

In this blog, we will attempt to understand what aggregate query in Salesforce is, why it is necessary, its many functions, and many more by the end of the blog.

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What is Aggregate Query Salesforce

A SOQL query scans the org database in the same way that a SELECT SQL statement would. A text-based search against the search index using SOSL is carried out programmatically. If you are aware of the objects or fields you wish to search for, as well as other factors, you can choose between SOSL and SOQL.

To create your own unique query strings, use SOQL. The following places can use these query strings: 

  1. Apex declarations
  2. Visualforce controllers and getter methods
  3. The query() call’s query String parameter.
  4. The Schema Explorer in the Eclipse Toolkit is your final option (this one is pretty slick) 

There are some differences between SOQL and SQL that those of you who are experienced with SQL will notice, but overall, SOQL does pretty much all you’ll need it to do.

Many SOQL Functions, such as Group Functions and Having Clauses, are used when building SOQL statements to obtain data from salesforce.com.

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Need of Aggregate Query in Salesforce 

Due to the numerous built-in capabilities that Salesforce offers, aggregate queries are required. To access data from salesforce.com, a variety of activities can be carried out using Object Query Language. 

A parent-child subquery is an aggregate query (as far as governor limits and error messages seem to go). An example of aggregate function is COUNT(), MAX(), AVG(), etc.

Aggregate functions can only be used on the outermost query, and almost all of them also require the usage of GROUP BY. In response, the query returns a List rather than a List.

There are many uses for both parent-child subqueries and aggregate functions. In the exact example, you gave, using COUNT() has the advantage that you don’t have to worry about the number of records returned. You will receive the required number right away.

Due to this reason, Aggregate Query Salesforce is used more recursively in this particular field.

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Various Aggregate Functions in Salesforce

In order to give you a thorough knowledge of this subject, we will now go over the numerous aggregate functions in Salesforce that operate similarly to SQL queries.

Group By Class

The whole number of data is divided into groups according to criteria using the Group By Class method. It enables grouping the data according to criteria.

SELECT Continent__c, Country__c, Avg ( Average__c
) FROM Student__c Group By Continent__c, Country__c

Let’s look at the Group By clause in more detail for a better grasp of the many aggregate functions it contains. To retrieve data from Salesforce objects, the Group By clause is utilized with the aggregated functions shown below.

  • Count()
    The Aggregate COUNT() method gives the output table’s total number of records.
SELECT COUNT ( ) FROM Student__c
    To determine how many records altogether contain a specific value, a method is utilized we will use COUNT (FIELD NAME).
SELECT City__c, COUNT ( Employee_name__c ) FROM
Employee__C Group By City__C
    Use the COUNT DISTINCT() method to count all non-null field values that are unique. This function eliminated the null values and returned the non-null data.
  • SUM ( )
    The Aggregate sum() function returns the overall sum of the values in an expression. If the output set contains no rows, NULL is returned. It relates to a specific class of aggregate functions.

    It specifies which column or phrase will be used to compute the total.

SELECT SUM ( Average__c) FROM Student__C

  • MAX()
    Use the aggregate function MAX to find the highest or highest value of a specific column or expression (). This function is useful in determining the highest of all selected values in a column.
SELECT MAX (Average__C) FROM Student__c
  • MIN()
    Use the aggregate function MIN to find the minimum or lowest value of a column or expression (). This function is beneficial for determining the lowest value among all the selected values in a column.
SELECT MIN ( Average__c) FROM Student__C

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The GROUP BY With HAVING clause term in SOQL is used to apply a condition based on the values of a set of fields.

SELECT Industry, COUNT(Id) From Account GROUP BY School HAVING School IN (‘Higher- Secondary’,’LKG’,’UKG’)

Aggregate Result Query in Salesforce

Aggregate Result in Salesforce is a List of AggregateResult objects or an AggregateResult object itself is returned by the SOQL aggregate functions COUNT(field name), COUNT DISTINCT(), SUM(), AVG(), MIN(), and MAX(). 

Using the AggregateResult object, we can use aggregate function results in the apex.

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Advantages of Aggregate Query Salesforce

Check out some of Salesforce’s advantages for aggregate queries:

  • It offers several data perspectives. You can give different users distinct perspectives of the structure and content of the database by using SOQL to build several data views.
  • Coding is a challenging form of computer communication. Thank goodness, SOQL queries just demand the usage of basic phrases like “select,” “insert into,” and “update.”
  • Any size of data can be swiftly and effectively retrieved using SOQL queries. Additionally, it can complete operations like data processing, insertion, and deletion rather swiftly.

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We sincerely hope that this blog post has given you a better understanding of the aggregate query in Salesforce. Because it has many features and the IT industry is increasingly using it. A group of organizations can save money by using aggregate queries because they are easy to understand and rapidly compress data in less intervals of time. This would be the ideal course of action if you wanted to begin working in the Salesforce industry.

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