How to limit columns returned by Django query?
That seems simple enough, but all Django Q开发者_运维技巧ueries seems to be 'SELECT *'
How do I build a query returning only a subset of fields ?
In Django 1.1 onwards, you can use defer('col1', 'col2')
to exclude columns from the query, or only('col1', 'col2')
to only get a specific set of columns. See the documentation.
values
does something slightly different - it only gets the columns you specify, but it returns a list of dictionaries rather than a set of model instances.
Append a .values("column1", "column2", ...)
to your query
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