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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2008-11-09 16:06:05 +0000 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2008-11-09 16:06:05 +0000 |
| commit | 043379efa5d61626c9a8ab42b15c7687c6e6a0fd (patch) | |
| tree | a0d1012d6644f5d4ac227353ceaa5c1faffaa880 /lib/sqlalchemy/engine/base.py | |
| parent | 3f8914b4b28f309467b96f2903388e69cf8c2b2d (diff) | |
| download | sqlalchemy-043379efa5d61626c9a8ab42b15c7687c6e6a0fd.tar.gz | |
- Query.count() has been enhanced to do the "right
thing" in a wider variety of cases. It can now
count multiple-entity queries, as well as
column-based queries. Note that this means if you
say query(A, B).count() without any joining
criterion, it's going to count the cartesian
product of A*B. Any query which is against
column-based entities will automatically issue
"SELECT count(1) FROM (SELECT...)" so that the
real rowcount is returned, meaning a query such as
query(func.count(A.name)).count() will return a value of
one, since that query would return one row.
Diffstat (limited to 'lib/sqlalchemy/engine/base.py')
0 files changed, 0 insertions, 0 deletions