I have a module that I use at work that I want to release to CPAN, but I want to make sure it doesn't exist first. Plus, I want to make sure I have all the interface stuff down first.

The module constructs SQL statements from extremely little information. An example is probably in order.

Let's say I have a schema that has the following structure:

Now, let's say I want to get A.foo and E.bar in some query where "D.abcd = ?". Instead of me, the programmer, figuring out all the connectors (A->B, B->D, D->E), I make the following function call: 

my $sql = $builder->build_sql(
    select => [
        'A.foo',
        'E.bar',
    ],
    where => [
        'D.abcd = ?',
    ],
);

[download]

That will return me the following SQL: 

SELECT A.foo, E.bar
  FROM A join B using (ab) join D using (bd) join E using (de)
 WHERE D.abcd = ?

[download]

The algorithms used will work for any complexity of schema and are extremely fast. I also, since I use it for a reporting schema that is selectively denormalized, added the capability to take advantage of those denormalizations in the appropriate situations.

Does this exist? What features would be desirable? What should this be called?

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Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
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20041019 Edit by castaway: Changed title from 'Is it on CPAN? (DBIx:: module)'

In reply to RFC - A multi table SQL Builder by dragonchild

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