RE: SQL statement PREPARE does not work in ECPG

Hi Meskes-san, Takahashi-san

> If the standard allows it, we want to be able to process it.

I will try to implement it with the Idea-2 that doesn't use PQprepare() and
Takahasi-san's following idea.

> For example,
> - ECPG convert ":ID" to "$1" and "$1" in the original statement to "$$1"
> - next_insert() do not check "$$1"
> - ECPGdo() reconvert "$$1" to "$1"

But I will probably be late because I don't understand parse.pl very well.
I think that the following rule is made by parse.pl.

PreparableStmt:
SelectStmt
{
is_in_preparable_stmt = true; <--- I want to add it.
$$ = $1;
}
| InsertStmt
.....

The above variable is used in ecpg.trailer.

ecpg_param: PARAM {
if(is_in_preparable_stmt)
$$ = mm_strdup(replace_dollar_to_something());
else
$$ = make_name();
} ;

I will use @1 instend of $$1 because the replacing is almost same as the existing replacing function in ecpglib.
Is it good?

Regards
Ryo Matsumura