This is dangerous because vulnerable to SQL Injections. Anyway....

a query can be a valid SQL WHERE clause:

x = "table.id == %i" % value
query = x
set = db(query)
row = set.select()

in this case x is valid SQL. Notice it is not 'db.table.id' but
'table.id' because db is a web2py animal not a SQL animal.

On Sep 10, 9:41 am, Don <sam...@gmail.com> wrote:
> Okay, that was a bad example and my fault.  Let's try again
>
> x = 'db.table.id == value'
> query = x
> set = db(query)
> row = set.select()
>
> This will fail because the "query" variable is not a gluon.sql.Query
> object, it is just a string.  How can I convert from a string to a
> query?
>
> On Sep 10, 10:32 am, Yarko Tymciurak <yark...@gmail.com> wrote:
>
> > the "idiom" is db(WHERE_CLAUSE).select(FROM_CLAUSE)  (a simplification, but
> > you get the idea)
>
> > so you want
>
> > query_results = db(x).select()
>
> > or (equivalently):
>
> > query_results = db(x).select(db.table.ALL)
>
> > On Thu, Sep 10, 2009 at 9:26 AM, Don <sam...@gmail.com> wrote:
>
> > > Ex:
> > > x = 'db.table.id == value'
> > > query = db(x)
>
> > > * This fails.  Is it possible to convert a string into a query?
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