On Oct 6, 4:14 am, Joril <[EMAIL PROTECTED]> wrote:
> Hi everyone!
> I'm looking for a way to log queries at a higher level than SQL.. That
> is, given the class
>
> Base = declarative_base()
> class DataTest(Base):
> id = Column(Integer, primary_key = True)
> propb = Column(Boolean)
> __tablename__ = "t"
>
> right now when I try to print a query restriction:
>
> restr=(DataTest.propb==False)
> print restr
>
> I get something like
>
> "t.propb = :propb_1"
>
> Is there a way to get
>
> "propb = False"
> ?
>
> I know I can fetch the operands via restr.left.name and
> restr.right.value, but what about the operator?
> Many thanks for your help!
You'd have to build a function which interpolates the values of bind
parameters into the SQL string, something like:
def print_clause(clause):
t = str(clause)
params = clause.compile().params
def token(m):
return repr(params[m.group(1)])
return re.compile(r':(\w+)').sub(token, t)
Alternatively you could visit and compile the clause directly with
your own compiler, which subclasses compiler.DefaultCompiler and
overrides visit_bindparam() to return a string representation of the
data instead of a param name.
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