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What are the results of a dynamic soql query?
Dynamic SOQL results can be specified as concrete sObjects, such as Account or MyCustomObject__c, or as the generic sObject data type. At run time, the system validates that the type of the query matches the declared type of the variable. If the query does not return the correct sObject type, a run-time error is thrown.
How to access each individual result returned from a subquery?
I’m having trouble understanding how to access each individual result returned from a subquery. The picture shows the code which: But I have not been able to individually access the subquery results. I still can’t get to each individual child record per parent. I can only see all child records per each parent.
What does it mean to use dynamic soql in apex?
Dynamic SOQL. Dynamic SOQL refers to the creation of a SOQL string at run time with Apex code. Dynamic SOQL enables you to create more flexible applications. For example, you can create a search based on input from an end user or update records with varying field names. To create a dynamic SOQL query at run time,…
Can you bind variables in Salesforce dynamic soql?
For a full description of SOQL query syntax, see Salesforce Object Query Language (SOQL) in the SOQL and SOSL Reference. You can use simple bind variables in dynamic SOQL query strings. The following is allowed: However, unlike inline SOQL, dynamic SOQL can’t use bind variable fields in the query string.
What happens when a sobject field is not selected in a SOSL query?
SOQL and SOSL queries only return data for sObject fields that are selected in the original query. If you try to access a field that was not selected in the SOQL or SOSL query (other than ID), you receive a runtime error, even if the field contains a value in the database.
Can you use a bind variable in dynamic soql?
You can use simple bind variables in dynamic SOQL query strings. The following is allowed: However, unlike inline SOQL, dynamic SOQL can’t use bind variable fields in the query string. The following example isn’t supported and results in a Variable does not exist error:
Do you have to use dynamic soql in apex?
However, a very nice feature of dynamic SOQL is that it supports referencing local variables like static SOQL, so you could make your query: You should not use a dynamic query unless you must. In this case, since you are doing nothing fancy, just use a static query:
Which is the best way to test soql queries?
The Query Editor provides a quick way to inspect the database. It is a good way to test your SOQL queries before adding them to your Apex code. When you use the Query Editor, you must supply only the SOQL statement without the Apex code that surrounds it.
What can you do with a soql statement?
SOQL Statements SOQL statements evaluate to a list of sObjects, a single sObject, or an Integer for count method queries. For example, you could retrieve a list of accounts that are named Acme: From this list, you can access individual elements: You can also create new objects from SOQL queries on existing ones.
What are the three return types in soql?
1. Single sObject. 2. List of sobjects. 3. Integer. One return type that was not mentioned… If you assign the results of a SQOL to a single object and SOQL finds no results, the return type is NULL. If you aren’t aware of this and you aren’t doing a NULL check on the results, it can cause a “derefrencing a null value” exception.
When to cast from static to dynamic soql?
At run time, the system validates that the type of the query matches the declared type of the variable. If the query does not return the correct sObject type, a run-time error is thrown. This means you do not need to cast from a generic sObject to a concrete sObject. Dynamic SOQL queries have the same governor limits as static queries.