What is SOQL ? : SOQL Queries | A Definitive Guide [ OverView ]

• In this article you will learn:
• 1.Salesforce Object Query Language( SOQL).
• 2.When to Use SOQL .
• 3.What are the SOQL features?
• 4.SOQL Purpose.
• 5.SOQL Syntax and Explanation.
• 6.How to Write SOQL Statements.
• 7.Performance Considerations.
• 8.Conclusion .

Salesforce Object Query Language( SOQL):

Use Salesforce Object Query Language( SOQL) to search your association’s Salesforce data for specific information. SOQL is analogous to the SELECT statement in the extensively used Structured Query Language( SQL), but is designed specifically for Salesforce data.

• With SOQL, you can make simple yet important query strings in multiple surroundings.
• Using the queryString parameter of the Cleaner API query() call. See query() in the Cleaner API inventor companion. See Query in the REST API inventor companion.
• Using Apex Statements.
• Using Visualforce regulators and getter styles. See Controller styles in the Visualforce inventor companion.
• Using Salesforce CLI. force viewdata sql query in data commands subject of Salesforce CLI command environment.
• Using Extensions for Visual Studio Code.
• Analogous to the SELECT command in Structured Query Language( SQL), SOQL allows you to specify a source object( similar as an account), a list of fields to recoup, and the conditions for opting rows in the source object.
• SOQL doesn’t support all the advanced features of the SQL SELECT command.
• For illustration, you can not use SOQL to perform arbitrary join operations, use wildcards in field lists, or use recitation expressions.
• SOQL uses a SELECT statement combined with a filtering statement to return a set of data, which can voluntarily be ordered elect one or further fields from commodity where the sludge statement and, voluntarily, the results are ordered For illustration, if the value of Name is Sandy, the following SOQL query returns the values of the ID and Name fields for all Account records select id, name from account where name = ‘ flaxen ’ Apex requires that you compass SOQL and SOSL statements with square classes to use them in your statements.
• You can use Apex Script variables and expressions when anteceded by a colon().

When to Use SOQL:

• Use SOQL when you know what objects the data resides in, and you want to recoup data from a single object or from multiple objects related to each other.
• kind the results as part of the query. recoup data from number, date or checkbox fields.
• For further information, see SOQL with Large Objects.

What are the SOQL features?

• SOQL is case asleep.
• SOQL helps in optimizing the law.
• SOQL reduces our workload and time.
• Data from objects can be uprooted to excel wastes using SOQL.
• SOQL questions will be needed in Apex programming.
• Expansive knowledge in SOQL will help in getting a good inventor.

SOQL Purpose:

• Salesforce Object Query Language in Apex Statements. In Visualforce regulator and getter styles.
• In the schema discoverer of theForce.com IDE.
• Salesforce Object Query Language( SOQL) is case asleep which means we can write in uppercase, lowercase and both lower and uppercase.
• For our convenience in our Salesforce inventor tutorial, we use uppercase for SOQL keywords and lowercase letters for names, field lists, and conditions.
• When SOQL is used we can optimize the law which results in faster prosecution.
• With the help of Salesforce Object Query Language( SOQL), data can be uprooted from Salesforce custom objects and standard objects.
• In SOQL we use API names for standard and custom-made objects. typically custom-made object API names always end with c.

SOQL Syntax and Explanation:

SOQL Syntax In our former Salesforce tutorial, we’ve learned about what SOQL is. In this Salesforce Training Tutorial, we will go through the exemplifications and explanation of SOQL Syntax.

SOQL Syntax:

The Salesforce Object Query Language uses the SELECT keyword to cost data from objects and fields. In Structure Query Language( SQL), the keyword SELECT is used to cost data:

• Select field.
• From the object .
• Where position .
• Limit to order for viewing or reference.
• Offset .
• Update viewstate .

From the syntax below we need to know easily about each word in the syntax. Flash back the following effects precisely:

Commodity:When we relate to a commodity it refers to custom and standard particulars.

Condition:We use conditions in SOQL to sludge the records.

Ordering:It’s used to order the results. It can be voluntary in SOQL.

Limit:This limits the number of records while costing.

To View:It’s used to get the records from the records entered on the last day.For reference It’s used to modernize LastReferencedDate.

Update View Status:It updates the graph view statistics for the recaptured records.When jotting SOQL statements we use API names for fields and markers of fields shouldn’t be used.

Standard Objects:The field name is pertained to as the APIname.Custom Object The API Name column refers to the API name.

How to Write SOQL Statements:

How to Write a SOQL Statement In our former Salesforce tutorial, we learned how to download and install theForce.com Explorer software to write your first SOQL statement. In our former Salesforce training composition we learned how to download and install theForce.com Explorer software. In our coming SOQL Salesforce tutorial we use only theForce.com Explorer software.In this illustration we’re taking a standard object named “ Account ”. Select ID, Name from Account- From the below SOQL statement we’re getting the id and name of a standard object named “ Account ”. How to write SOQL statements. These are some exemplifications of SOQL statement questions. In this Salesforce tutorial, we’ve learned introductory SOQL statements.

SOQL( Salesforce Object Query Language):

• SOQL uses a SELECT statement combined with a filtering statement to return a set of data, which can voluntarily be ordered to select one or further fields from the commodity where the sludge statement and, voluntarily, the results are ordered SOQL query is enclosed in square classes.
• Account a = ( elect id, name FROM account WHERE name = ‘ acc1 ′); In the below query the “ a ” variable stores the id, the name of all the accounts with the name “ acc1 ” SOQL statements estimate to a list of SObject records, single SObject records, or an integer for the count system queried.
• Query List of SObjects Records The following illustration is to display the list of Accounts.

Where clause in SOQL:

• The where clause is also called a tentative expression. The WHERE clause is used to filter the recaptured data. This WHERE clause filters the data grounded on the given condition or criteria. principally when a WHERE clause is used in a SOQL statement, the WHERE clause is followed by some comparison drivers and logical drivers like IN driver, NOT IN driver, INCLUDES driver, EXCLUDES driver.
• Let’s look at an illustration on the WHERE clause. Elect FIRST NAME, LAST NAME FROM CONTACT WHERE FIRST NAME! = NULL From the below SOQL statement we’re getting data from a standard object named “ Contact ”. We’re using the tentative expression “ WHERE ” to filter the data recaptured from the Contact object.
• Antedating where we’ve used it! = driver to sludge data first name which isn’t null. Let us look at another illustration to understand the WHERE clause in SOQL. select FIRST NAME, LAST NAME FROM CONTACT WHERE LAST NAME = ‘ SELECT Where Clause in SOQL With SOQL statements we’re costing data from Contact whose first name is “ Adarsh ”. In SOQL statements textbook words are mentioned with ”.

Deciding Which to Use:

• A SOQL query is original to a SELECT SQL statement and searches the org database. SOSL Search is a programmatic way of performing textbook- grounded quests against indicators.
• Use SOQL when you know what objects the data resides in, and you want to Recoup data from a single object or from multiple objects related to each other.
• kind the results as part of the query. recoup data from number, date or checkbox fields.
• Use SOQL when you do n’t know what object or field the data is in, and you want to recoup data for a specific word that you know is present in a field. Since SOSL can tokenize multiple words within a field and make a hunt indicator from it, SOSL quests are briskly and can return more applicable results.
• Efficiently recoup multiple objects and fields where objects may or may not be related to each other. recoup data for a particular division in an association using the Division point.

Performance Considerations:

• To increase the effectiveness of queries and quests, keep in mind Both the SOQL WHERE sludge and the SOSL hunt query can specify the textbook you should be looking for.
• When a given hunt can use any language, SOSL is generally more brisk than SOQL if the hunt expression uses the word CONTAINS.
• SOSL can tokenize multiple words within a field( for illustration, multiple words separated by spaces) and make a hunt indicator from it.However, you may find that SOSL is briskly than SOQL for these quests, If you ’re searching for a specific specific term that you know exists in a field.
• For illustration, if you were searching for “ John ” against a field with a value similar to “ Paul and John Company ”, you could use SOSL.
• Using multiple fields leads to multiple permutations, which can be delicate to tune.
• Shoot queries and quests- figure and execute queries and quests using one of several surroundings, including Cleaner API, REST API, Apex, and more.
• For further information about which surroundings support queries and quests, see Salesforce Object Query Language( SOQL) and Salesforce Object Search Language( SOSL).

Conclusion:

I’ll assume for a moment that you’re familiar with introductory SQL for the purposes of thistutorial.However, there are plenty of great coffers on the web for brushing up, If you ’re not. As an inventor who wants to expandSalesforce.com, SOQL is a veritably important and important aspect of rendering. You can use SOQL to produce your own custom query strings.

Top statement:

• Visualforce getter styles and regulators .
• String param in query passed in query() call .
• Eventually, you can use the Schema Explorer in the Eclipse Toolkit( it’s veritably clever).
• For those of you familiar with SQL, you ’ll find some differences but for the utmost part SOQL does everything you ’ll need.
• The LIKE driver provides a way to match partial textbook strings and includes support for wildcards. Let’s say for a moment that we want to find all leads where the dispatch sphere is the same.
• That’s an illustration of a LIKE statement with the wildcard.
• The position of the percent sign ‘’ is important then. I ’m principally saying, bring me back all leads where the dispatch ends with “somecompany.com ”. That’s why I put ‘’ in the morning for whatever I ’m looking for. ” Anything to the left wing of the sign is ignored in the hunt.