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How to fetch all fields in a soql query?
FIEDLS (STANDARD) – This can be used to fetch all the standard fields of an object at one go. FIELDS (CUSTOM) – This is use to fetch all the custom fields alone on an object. Sweet isn’t it? However, there is a limit, we cannot fetch more than 200 records per query.
How does the sort order work in soql?
The sort order depends on your user locale setting. For English locales, SOQL uses the UTF-8 values of the uppercase character to create a sort order. In other words, sorting for English locales is case insensitive. For non-English locales, SOQL uses a pre-defined order that is natural for the locale specified.
What does soql ORDER BY clause mean in Salesforce?
What is SOQL ORDER BY Clause ? ORDER BY Clause is used to retrieve the data in “Ascending” or “Descending” order by the condition given in SOQL Statement. In salesforce ORDER BY clause are two types. They are. ASC. DESC. Here ASC means ascending and DESC means descending order. In SOQL by default the data will be retrieved in ascending order only.
Why does soql use a pre defined order?
For non-English locales, SOQL uses a pre-defined order that is natural for the locale specified. This is because different cultures may sort the same characters in different ways, and this nuance cannot be captured by the UTF-8 values alone.
How to select some fields only in a queryset?
You do not want the fetch the other fields to reduce the work the DB has to do. You can verify the generated sql using str (queryset.query), which gives. The output will be list of dictionaries. Alternatively, you can do The only difference between only and values is only also fetches the id.
Can a list of objects access the fields?
An object is a reference towards a memory address. Then, the fields of this objects are other references towards other memory addresses. Hence, a list of objects is a list of references. So, it’s impossible for the list to direclty access the object fields (references given by the references). The short answer is no.
How to get a list of specific fields values?
The key would be the field. Doing this way, when you ask the HashMap to retrieve you the object corresponding to the field that you want, the map would return you an ArrayList cointaing all of the elements which has that field. Without Iterating this is not possible .You can reduce iteration somehow but it is must.