Thread: Issue with psqlrc with command line.
Hi All,
I am facing issue while executing psqlrc alias commands via. "psql -c" option.
Please find below details:
-bash-4.2$ cat .psqlrc
\set testing 'select * from test;'
postgres=# select version();
version
----------------------------------------------------------------------------------------------------------
PostgreSQL 9.6.2 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-16), 64-bit
(1 row)
postgres=# :testing
id
----
1
However, it is not working with the command line.
-bash-4.2$ /opt/PostgreSQL/9.6/bin/psql -c ":testing"
ERROR: syntax error at or near ":" at character 1
STATEMENT: :testing
ERROR: syntax error at or near ":"
LINE 1: :testing
As per the document from PG-9.6 it is possible.
Apologies, If I am getting wrong.
On Wednesday, August 29, 2018, saurabh shelar <saurabhshelar5@gmail.com> wrote:
As per the document from PG-9.6 it is possible.
You cannot use psql variables with -c
“
command must be either a command string that is completely parsable by the server (i.e., it contains no psql-specific features), or a single backslash command.”David J.
Hi David,
Thank you for the swift response.
However, could you please confirm if the below scenario is expected.
- included the alias in the file.
- And passed the file with psql and it worked.
-bash-4.2$ cat test
:testing
-bash-4.2$ /opt/PostgreSQL/9.6/bin/psql -f test
id
----
1
On Wed, Aug 29, 2018 at 8:44 PM David G. Johnston <david.g.johnston@gmail.com> wrote:
On Wednesday, August 29, 2018, saurabh shelar <saurabhshelar5@gmail.com> wrote:As per the document from PG-9.6 it is possible.You cannot use psql variables with -c“commandmust be either a command string that is completely parsable by the server (i.e., it contains no psql-specific features), or a single backslash command.”David J.
On Wednesday, August 29, 2018, saurabh shelar <saurabhshelar5@gmail.com> wrote:
Hi David,Thank you for the swift response.However, could you please confirm if the below scenario is expected.- included the alias in the file.- And passed the file with psql and it worked.-bash-4.2$ cat test:testing-bash-4.2$ /opt/PostgreSQL/9.6/bin/psql -f testid----1
Yes. It’s only -c that is constrained. (There may be some interplay with whether psqlrc is consulted in various situations as well...)
David J.
Hi David,
Thank you for the help.
I was just got confused with the below line mentioned in the document. However, it seems it is still the same behaviour (i.e --no-psqlrc).
"Before PostgreSQL 9.6, the -c option implied -X (--no-psqlrc); this is no longer the case."
On Wed, Aug 29, 2018 at 8:54 PM David G. Johnston <david.g.johnston@gmail.com> wrote:
On Wednesday, August 29, 2018, saurabh shelar <saurabhshelar5@gmail.com> wrote:Hi David,Thank you for the swift response.However, could you please confirm if the below scenario is expected.- included the alias in the file.- And passed the file with psql and it worked.-bash-4.2$ cat test:testing-bash-4.2$ /opt/PostgreSQL/9.6/bin/psql -f testid----1Yes. It’s only -c that is constrained. (There may be some interplay with whether psqlrc is consulted in various situations as well...)David J.
Hi David,Thank you for the help.I was just got confused with the below line mentioned in the document. However, it seems it is still the same behaviour (i.e --no-psqlrc)."Before PostgreSQL 9.6, the -c option implied -X (--no-psqlrc); this is no longer the case."
Whether psqlrc is being processed or not is immaterial to the behavior you are seeing because -c will not resolve the variable reference prior to sending the command to the server.
If you have other non-variable definitions in psqlrc that could affect the -c command (or its output - like \pset instructions) those will now be applied before sending the command whereas before they would not be.
(admittedly I'm not reading the source code nor have experimented to draw this conclusion)
David J.
Hi David,
Got your point.
Thank you for the help.
On Wed, Aug 29, 2018 at 9:07 PM David G. Johnston <david.g.johnston@gmail.com> wrote:
Hi David,Thank you for the help.I was just got confused with the below line mentioned in the document. However, it seems it is still the same behaviour (i.e --no-psqlrc)."Before PostgreSQL 9.6, the -c option implied -X (--no-psqlrc); this is no longer the case."Whether psqlrc is being processed or not is immaterial to the behavior you are seeing because -c will not resolve the variable reference prior to sending the command to the server.If you have other non-variable definitions in psqlrc that could affect the -c command (or its output - like \pset instructions) those will now be applied before sending the command whereas before they would not be.(admittedly I'm not reading the source code nor have experimented to draw this conclusion)David J.