Leveraging the ORM for very complex queries

Hello,

I have to write some complex SQL queries that I am unable to express using the ORM. I construct these complex queries by writing a few simple ORM queries, getting the SQL using QuerySet.query and combining them with various SQL operators manually. These hand-crafted queries are not very flexible because it is very easy to modify the final SQL.

My question: Is there a way to programmatically construct the complex queries. I see that I can get the generated SQL and parameters by invoking SQLCompiler.as_sql(). Can I invoke as_sql() on the individual query sets and then construct the complex query? What are some gotchas that I need to watch out for?

Thanks,

Suriya Subramanian

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