There should be a note of caution though if you are planning to use the result of your shell commands back into the second part of the SQL, similar to this:-
I think that the variables in the section before the EOSQL label (called a Here document) will be evaluated by the shell before the sqlplus command is called, so you will actually still select COL1 for the second line.
I hope that this gives you something to consider. It may be that there is still a need to execute as separate queries if this is the case. The alternate would be to have a reference table in your database and then when you ! out to the shell, call another SQL to update this table before returning to the main execution. It's not pretty, but it might work.
Many things are achievable from within SQL already. What are you trying to do in the shell? It might be that we can capture it into the SQL.
Hi,
I've would like to create kill statement from sqlplus output.
So, I've modified somoene's script :
mud_kill_stmt=`sqlplus -s / as sysdba <<EOF
select 'kill -9 ' || p.SPID || ';' statement from $process_view p, $session_ ......... and so on
exit;
EOF`
$mud_kill_stmt | tr ... (1 Reply)
Hi,
I want to write the shell script to change multple file name (the file name is get from DB)
e.g. cp db1.txt file1_new.txt
cp db2.txt file2_new.txt
cp db3.txt file3_new.txt
I have write the script like this:
VAR=`sqlplus -s $LOGON @<<ENDOFTEXT
set termout off
... (0 Replies)
We have two files with results of two commands of cisco:
one file; showintstatus, have the following format:
Gi2/6 servidorlij connected 176 full 1000 10/100/1000BaseTsecond file; showmacaddrestable, have the following format:
* 162 0021.9b8d.073e dynamic Yes 0 ... (1 Reply)
Can i do this
Say one command
sed 's/:*/ /g' $summf
is returning
C1234
C2345
C3434
some no of rows, now this ouput i have to insert it into a DB table
how do i do this?? (2 Replies)
Hi,
I need to connect to the database and retrieve two variables from the database and store them in a variable,out of these two variables I need to get lastdigit appended to the variable 1 retrieved and variable 2 with out any modification
in short
select var,data from usage;
o/p=... (1 Reply)
Hi All,
Below is the 2 different ouputs of the command "ls -lrt", my question is what exactly "total 0" & "total 8" means here ?
$ ls -rtl
total 0
-rw-r--r-- 1 oracle dba 0 Feb 10 20:16 c
-rw-r--r-- 1 oracle dba 0 Feb 10 20:16 b
-rw-r--r-- 1... (1 Reply)
Hi All,
I have around 900 Select Sql's which I would like to run in an awk script and print the output of those sql's in an txt file.
Can you anyone pls let me know how do I do it and execute the awk script? Thanks. (4 Replies)
Hi All,
I have written the shell script which does the following :
a. Reads the *.cnf file content from the specified input folder path
b. Grep's some strings from the *.cnf file and writes the output in result file(*.cnf_result.txt) in output folder
c. Now, if we get new version of... (5 Replies)
Dear All,
I am trying to write a Unix Script which fires a sql query. The output of the sql query gives multiple rows. Each row should be saved in a separate Unix File.
The number of rows of sql output can be variable. I am able save all the rows in one file but in separate files.
Any... (14 Replies)
Hi All,
I want to run multiple sql queries and store the data in variable but i want to use sql command only once. Is there a way without running sql command twice and storing.Please advise.
Eg :
Select 'Query 1 output' from dual;
Select 'Query 2 output' from dual;
I want to... (3 Replies)
Discussion started by: Rokkesh
3 Replies
LEARN ABOUT CENTOS
dblink_exec
DBLINK_EXEC(3) PostgreSQL 9.2.7 Documentation DBLINK_EXEC(3)NAME
dblink_exec - executes a command in a remote database
SYNOPSIS
dblink_exec(text connname, text sql [, bool fail_on_error]) returns text
dblink_exec(text connstr, text sql [, bool fail_on_error]) returns text
dblink_exec(text sql [, bool fail_on_error]) returns text
DESCRIPTION
dblink_exec executes a command (that is, any SQL statement that doesn't return rows) in a remote database.
When two text arguments are given, the first one is first looked up as a persistent connection's name; if found, the command is executed on
that connection. If not found, the first argument is treated as a connection info string as for dblink_connect, and the indicated
connection is made just for the duration of this command.
ARGUMENTS
conname
Name of the connection to use; omit this parameter to use the unnamed connection.
connstr
A connection info string, as previously described for dblink_connect.
sql
The SQL command that you wish to execute in the remote database, for example insert into foo values(0,'a','{"a0","b0","c0"}').
fail_on_error
If true (the default when omitted) then an error thrown on the remote side of the connection causes an error to also be thrown locally.
If false, the remote error is locally reported as a NOTICE, and the function's return value is set to ERROR.
RETURN VALUE
Returns status, either the command's status string or ERROR.
EXAMPLES
SELECT dblink_connect('dbname=dblink_test_standby');
dblink_connect
----------------
OK
(1 row)
SELECT dblink_exec('insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
dblink_exec
-----------------
INSERT 943366 1
(1 row)
SELECT dblink_connect('myconn', 'dbname=regression');
dblink_connect
----------------
OK
(1 row)
SELECT dblink_exec('myconn', 'insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
dblink_exec
------------------
INSERT 6432584 1
(1 row)
SELECT dblink_exec('myconn', 'insert into pg_class values (''foo'')',false);
NOTICE: sql error
DETAIL: ERROR: null value in column "relnamespace" violates not-null constraint
dblink_exec
-------------
ERROR
(1 row)
PostgreSQL 9.2.7 2014-02-17 DBLINK_EXEC(3)