On 21 July 2017 at 15:16, <zuberre@gmail.com> wrote:
> The following bug has been logged on the website:
>
> Bug reference: 14754
> Logged by: Richard Zuber
> Email address: zuberre@gmail.com
> PostgreSQL version: 9.5.7
> Operating system: CentOS 7.3.1611
> Description:
>
> Hello,
>
> I’ve been using ecpg as part of my automated test framework to ensure my
> various SQL migrations have proper syntax. I believe I have run into an
> error where ECPG is reporting a syntax error that does not in fact exist.
>
> Assume the following table is defined (though this should not be relevant to
> the issue):
>
> CREATE TABLE foo
> (
> id SERIAL NOT NULL,
> name text NOT NULL,
> PRIMARY KEY (id)
> );
>
> There are two files to be fed into ecpg (version - ecpg (PostgreSQL 9.5.7)
> 4.11.0) :
>
> --doesnt_work.sql
> EXEC SQL WITH cte AS
> (
> INSERT INTO foo(name)
> VALUES
> ('bar')
> RETURNING id
> )
> SELECT * FROM foo;
> --EOF
>
> The output of “doesn’t_work.sql” is:
>
> $ ecpg doesnt_work.sql
> doesnt_work.sql:7: ERROR: syntax error at or near ")"
> $ echo $?
> 3
>
> Since this is a valid statement from a syntax perspective (ignoring what the
> statement does), I would expect no error.
>
> The following appears to work as expected:
>
> --works.sql
> EXEC SQL WITH cte AS
> (
> INSERT INTO foo(name)
> VALUES
> ('bar')
> )
> SELECT * FROM foo;
> --EOF
>
> $ ecpg works.sql
> $ echo $?
> 0
>
> The difference between the two is the use of the “RETURNING” statement in
> the CTE. I have reviewed section 33.5 of the manual. While I took note of
> 33.5.3 in the manual, this statement does not actually return a result set.
> That said, I may be misinterpreting the documentation in this matter.
>
> I have reviewed release notes from later versions of postgres as well as the
> open TODOs, but have not seen anything that appears to relate to this
> behavior.
>
> I appreciate your attention,
> Richard Zuber
>
>
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--
greg
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