[Psycopg] Wierd "ProgrammingError" with "E" string prefix

[Harald Armin Massa]

Tim,


>> cur.execute("DROP TABLE %s", (table_name,))
> Don't let psycopg do the quoting for table and field names.  The
> automatic quoting is ONLY appropriate for field values.  Just use the
> normal % operator:
>    cur.execute("DROP TABLE %s"  %  table_name )

obviously this is the correct solution.

BUUUTTTT.... we all learned from xkcd (little droppi table) that using
string substitution to create SQL is a visit to the dark side.
So, my question: is there any sql-injection save way to dynamically
insert table-names into a SQL?


as in "select col1, col2, col3 from %(table)s where ..."

to make sure nobody inserts "correcttab; drop table students;" as name
for %(table)s ??

HArald



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