apex - Lookup: Show distinct values in SOSL - Salesforce Stack Exchange
You have do something like this get unique values. Get the result and Assign names into set of String. that will eliminate your duplicate value. It would seem you can limit this in a couple of different ways. One is by number of records returned, another is by using TypeOf (see Working. In Apex, you can use SOQL or SOSL on the fly by surrounding the statement in square brackets. returns the number of distinct non-null field values matching the query criteria. Lookup Relationships and Outer Joins.
Apex is used to add business logic to applications, to write database triggers, and to program controllers in the user interface layer. It has a tight integration with the database and query language, good web services support, and includes features such as futures and governors for execution in a multi-tenant environment.
A class is a template or blueprint from which objects are created. They consist of methods and attributes. Are stored with the version of API that is used to compile it. May contain other classes, known as inner classes but these can only be one level deep. Even though Apex code is not case sensitive, it is recommended that you follow the Java naming convention.
Static methods and attributes can only be declared in a top-level class definition. To create new exception classes, the Exception class must be extended. Classes can be enabled or disabled for profiles and can only becharacters in length.
Ways to Create Classes: This must be used with the webService keyword. All methods, attributes and inner classes that are global must be within a global class.
SOQL – How I Query With Thee, Let Me Count the Ways
If public, the class is visible across the application, org or namespace that comprises the class. If private is used for an inner class, the inner class is only accessible to the outer class.
The default for inner classes is private.
Top level or outer classes must have either a global or public keyword. A class can implement multiple interfaces, but it can only extend once class. A class can cast as a superclass and verify an objects class using the instanceof keyword. You can implement and extend classes using the keywords, virtual, abstract and extends. Virtual declares that the class allows extensions and overrides, Classes that are virtual cannot be global.Relationships in Salesforce - Lookup, Master-Detail, Many to Many and One to Many
Abstract declares that the class contains abstract methods and can be extended. These classes just have a method signature and do not have code. You cannot instantiate an object of an abstract class until some other class extends it. The Extends keyword declares that the class is a subclass. All Apex code executes in the system mode and ignores all CRUD, field-level security and record sharing level privileges.
You use with and without sharing keywords to implement sharing. By default a class will run in the without sharing mode. With sharing — This means that when performing DML operations, the user can only update records to which he or she has edit level access. Without Sharing — This ensures that sharing model access is ignored and is referred to a running in system mode. Interfaces are classes that only include the method signature.
The methods are not implemented in the interfaces. However, with SOQL, one of my favorite features is its support for dot notation to join related objects implicitly. We'll look at both child-to-parent and parent-to-child relationship shortly.
With Spring 10 Saleforce. They allow you to perform joins on multiple objects and traverse the relationship chain to find and return objects. Relationships are available for standard and custom objects in Salesforce.
apex - Last Inserted Records According to Distinct Lookup Field - Salesforce Stack Exchange
However, their syntax is slightly different. The classic relationship example is accounts and contacts. An account parent can have multiple contacts children. Child-to-Parent Relationship This type of query returns child objects contact containing parent account information: For child-to-parent relationships with custom objects the syntax is slightly different but the results are essentially the same.
This will be explained shortly in the parent-to-child section below. For each relationship you can specify up to 5 levels. This makes for some really cool queries that let you reach way up the relationship chain to fetch data. For instance you can write a query like this which spans only 4 levels. Parent-to-Child Relationships These types of queries are almost always one-to-many. You specify the relationship using a subquery, where the initial member of the FROM clause is the subquery is related to the initial member of the outer query FROM clause.
Here's where the relationship comes into affect.