Re: patch for EXECUTE .. INTO (from TODO)

On Wed, 2005-06-01 at 11:30 +0200, Pavel Stehule wrote:
> I did small trivial patch (almost all was written) for storing
> result from executing dynamic query into ROW or RECORD variable.

Cool, this will be useful. A few minor comments:

The patch needs some regression tests.

I'm not sure the parser modifications are quite right -- these
statements are treated as identical:

EXECUTE 'SELECT (row).* from (select row(10,1)::fxx) s'; _r;
EXECUTE 'SELECT (row).* from (select row(10,1)::fxx) s' INTO _r;

Accepting the former as valid syntax might mean misinterpreting some
function definitions (for example, EXECUTE '...'; var := 5). If you use
read_sql_construct() directly, you can use the *endtoken out parameter
to check whether the parser saw an INTO or a semicolon, and only look
for a following variable in the former case. In any case there's not
much point in defining plpgsql_read_expression2(), the rest of gram.y
just uses read_sql_construct() directly.

-Neil