Обсуждение: PLPython function and multiple line insert

Hi everyone,

I hope, I am on the right list. If not my apology.


I'd like to insert multiple lines as following with PLPython:

SQL statement:
INSET INTO table1 (field1, field2, field3)
    VALES ('abc', 'abc', TRUE),
          ('def', 'def', FALSE),
               ('ghi', 'ghi', TRUE);

Here the proposed function:

CREATE OR REPLACE FUNCTION insert_rows()
RETURNS boolean AS
$$
.
.
.
   sql = "("INSERT INTO table1 (field1, field2, field3)
               VALUES ('abc', 'abc', TRUE),
                  ('def', 'def', FALSE),
                  ('ghi', 'ghi', TRUE");"
   pypl.execute(sql)
.
.
$$
LANGUAGE 'plpythonu' VOLATILE

I ran into trouble with quoting this SQL statement in PLPython (PostgreSQL
8.3.7). Any ideas/suggestions how to quote it either with pypl.execute()
or pypl.plan()?

Thanks for any suggestions and help in advance,
Andi

Andi Klapper wrote:
>
>   sql = "("INSERT INTO table1 (field1, field2, field3)
>                VALUES ('abc', 'abc', TRUE),
>                   ('def', 'def', FALSE),
>                   ('ghi', 'ghi', TRUE");"
>   pypl.execute(sql)
> .
> .
> $$
> LANGUAGE 'plpythonu' VOLATILE
>
> I ran into trouble with quoting this SQL statement in PLPython
> (PostgreSQL 8.3.7). Any ideas/suggestions how to quote it either with
> pypl.execute() or pypl.plan()?
The statement looks incorrect from the python point of view (not just
plpython). You should quote multi-lined strings, or use an escape
character (\) like:
"""line 1
line 2"""
'''line 1
line2'''
'line 1\n\
line2'
So I would try to rewrite the statement with:
  sql = """INSERT INTO table1 (field1, field2, field3)
               VALUES ('abc', 'abc', TRUE),
                  ('def', 'def', FALSE),
                  ('ghi', 'ghi', TRUE);"""
  pypl.execute(sql)
>
> Thanks for any suggestions and help in advance,
> Andi
>