The goal is to execute a script hi.sh after an assertion in SQL script.
hi.sh contains:
#!/bin/bash
echo 'Hello World'
I'm trying to execute hi.sh within DO:
DO $$
BEGIN
ASSERT EXISTS (SELECT * FROM pg_catalog.pg_tables WHERE schemaname = 'public'), '"Public" schema is empty';
\! ./hi.sh
END$$;
It should raise error '"Public" schema is empty' and not execute hi.sh but once there are entries in public schema, hi.sh must be executed.
Running the sql script raises error:
psql:assert.sql:5: ERROR: syntax error at or near "\"
LINE 4: \! ./hi.sh
^
However, it will execute shell script once '\!' line is outside DO, like this:
\! ./hi.sh
How can we create a simple SQL script for executing hi.sh based on assertion?
Related
I am failing to use a parameter in function declaration.
a SQL script like :
CREATE OR REPLACE FUNCTION test_functon() RETURNS trigger AS
$BODY$
DECLARE
test int:=:SRID;
BEGIN
RETURN NEW;
END;
$BODY$
LANGUAGE plpgsql;
in a file.
And running psql -v SRID=2056 -f my_file.sql
leads to the error
ERROR: syntax error at or near ":"
This looks like the SQL is run without the var being properly replaced by its value.
What is the solution for this?
It seems like psql does not interpolate variables in the body of functions.
The following SQL verifies that.
SELECT :SRID;
CREATE OR REPLACE FUNCTION test_functon() RETURNS :TYPE AS
$BODY$
BEGIN
RETURN :SRID;
END;
$BODY$
LANGUAGE plpgsql;
Running that file results in this:
$ psql -v SRID=2056 -v TYPE=int -f query.sql
Expanded display is used automatically.
Null display is "ยค".
?column?
----------
2056
(1 row)
psql:query.sql:9: ERROR: syntax error at or near ":"
LINE 4: RETURN :SRID;
^
Notice how the return type defined by the variable TYPE is still interpolated, but everything inside the body is off limits.
You'll have to resort to a different mechanism to get your variable in there. You could leverage the fact that psql accepts a query through STDIN:
$ sed 's/:SRID/2056/' query.sql | psql
I want to run a SQL code using shell script and return the message whether the SQL query executed successfully or not. For this I have used unix script given below.
#!/bin/sh
sqlplus -S hr/hr#xe<<EOF
#emp.sql
EOF
var1=$(cat /cygdrive/d/scripts/output.txt | grep -c 'COUNT')
if [ $var1 -ge 1 ];
then
echo "success"
else
echo "failure"
fi
exit;
and emp.sql(called sql file) as
SET ECHO OFF
SPOOL D:\scripts\output.txt
SET LINESIZE 100
SET PAGESIZE 50
SELECT count(*) FROM employees;
SPOOL OFF;
EXIT 0;
When I execute the script I am getting output as
COUNT(*)
----------
107
./script1.sh: line 13: syntax error: unexpected end of file.
I don't know where I should put EOF statement exactly. Also I am not getting the status message whether it is success or failure which I want as output. Please help. Thanks in advance
SPOOL D:\scripts\output.txt Isnt this windows way of referring to a file where as in the shell script you referred to the file as /cygdrive/d/scripts/output.txt. I assume you are using linux shell to execute so I executed your script changing the spool line in sql file. It worked fine.
Edit: Also the \ that you used, for the spooled output.txt path, will cause the sqlplus to terminate. Hence the error line 13: syntax error: unexpected end of file. Perhaps add quotes to the path or use the same file path as you used in shell
I am creating a shell script where I have saved entries from a text file into an array. Those values are properly stored and show the correct contents. One of those entries contains a simple query and I want to pass it to a sql file. With that sql query I want to save the results into a text file.
Here is the part of the code that calls the sql file to run the sql script
PURGE_SITES=purge_site.txt
logmsg "USERID - $PURGES_SITE" n
QUERY=${Unix_Array[4]}
echo $QUERY
sqlplus -s $USER/$PASS <<EndSQL
#purges_sites.sql $PURGE_SITES '$QUERY'
EXIT SQL.SQLCODE
EndSQL
for now query stored in ${Unix_Array[4]} is "select -1 from dual"
Here is the file contents of the .sql file
set echo off ver off feed off pages 0
accept fname prompt 'Loading Sites...'
spool &1;
&2
/
spool off
It gives me error and reads &2 as "&2" instead of the query saved in the variable. However when i edit the .sql file and add something beforehand, it will display the correct data from the variable.
Here is the output
select -1 from dual
File Name===> results.txt
select -1 from dual
Loading Sites...SP2-0042: unknown command "&2" - rest of line ignored.
SP2-0103: Nothing in SQL buffer to run.
Here is the output if I add something before &2.
select -1 from dual
File Name===> results.txt
select -1 from dual
Loading Sites...select * from table_table select -1 from dual
*
ERROR at line 1:
ORA-00933: SQL command not properly ended
I typed in select * from table_table before &2.
So its actually retrieving the value from the variable but something needs to come beforehand in order to pass correctly.
Is there a system execute command in oracle that will execute a query? &2 just by itself is not allowed.
Wont this help you?
PURGE_SITES=purge_site.txt
logmsg "USERID - $PURGES_SITE" n
QUERY=${Unix_Array[4]}
echo $QUERY
# FRAME YOUR QUERY, PROMPTING USER IN SHELL ITSELF AND SEND TO SQLPLUS DIRECTLY
# BEWARE SQL INJECTION POSSIBLE
# YOU CAN REDIRECT THE SQLPLUS OUTPUT TO A FILE LIKE THIS, NO SPOOL NEEDED
sqlplus -s $USER/$PASS <<EndSQL >> $OUTPUT_FILE
set echo off ver off feed off pages 0
$QUERY
/
EXIT SQL.SQLCODE
EndSQL
I am running below : sqlplus ABC_TT/asfddd#\"SADSS.it.uk.hibm.sdkm:1521/UGJG.UK.HIBM.SDKM\"
afte that I am executing one stored procedure exec HOLD.TRWER
I want to capture return code of the above stored procedure in unix file as I am running the above commands in unix. Please suggest.
I guess you are looking for spool
SQL> spool output.txt
SQL> select 1 from dual;
1
----------
1
SQL> spool off
Now after you exit. the query/stroed procedure output will be stored in a file called output.txt
If by return code you mean output then:
command > file
If by return code you mean exit status then:
command
echo "$?" > file
If you mean something else, let us know.
You can store command return value in variable
value=`command`
And then checking it's value
echo "$value"
For your case to execute oracle commands within shell script,
value=`sqlplus ABC_TT/asfddd#\"SADSS.it.uk.hibm.sdkm:1521/UGJG.UK.HIBM.SDKM\" \
exec HOLD.TRWER`
I'm not sure about the sql query, but you can get the returned results by using
value=`oraclecommand`.
To print the returned results of oracle command,
echo "$value"
To check whether oracle command or any other command executed successfully, just
check with $? value after executing command. Return value is 0 for success and non-zero for failure.
if [ $?=0 ]
then
echo "Success"
else
echo "Failure"
fi
I'm trying to load a sql from a file in bash and execute the loaded sql. The sql file needs to be versatile, meaning it cannot be altered in order to make things easy while being run in bash (escaping special characters like * )
So I have run into some problems:
If I read my sample.sql
SELECT * FROM SAMPLETABLE
to a variable with
ab=`cat sample.sql`
and execute it
db2 `echo $ab`
I receive an sql error because by doing a cat the * has been replaced by all the files in the directory of sample.sql.
Easy solution would be to replace "" with "\" . But I cannot do this, because the file needs to stay executable in programs like DB Visualizer etc.
Could someone give me hint in the right direction?
The DB2 command line processor has options that accept a filename as input, so you shouldn't need to load statements from a text file into a shell variable.
This command will execute all SQL statements in the file, with newline treated as the statement terminator:
db2 -f sample.sql
This command will execute all SQL statements in the file, with semicolon treated as the statement terminator:
db2 -t -f sample.sql
Other useful CLP flags are:
-x : Suppress the column headings
-v : Echo the statement text immediately before execution
-z : Tee a copy of all CLP output to the filename immediately following this flag
Redirect stdin from the file.
db2 < sample.sql
In case, you have a variable used in your script and wanted to get it replaced by the shell before executed in DB2 then use this approach:
Contents of File.sql:
cat <<xEOF
insert values(1,2) into ${MY_SCHEMA}.${MY_TABLE};
select * from ${MY_SCHEMA}.${MY_TABLE};
xEOF
In command prompt do:
export MY_SCHEMA='STAR'
export MY_TAVLE='DIMENSION'
Then you are all good to get it executed in DB2:
eval File.sq |db2 +p -t
The shell will replace the global variables and then DB2 will execute it.
Hope it helps.