I'm using FreeTDS in a script to insert records into a MSSQL database. TheUSEandINSERTcommands work, but theexitcommand doesn't and it hangs. I've tried redirectingstdoutbutcatcomplains. I suppose I will use Expect otherwise. Meh. Thanks.
echo -e "USE db\nGO\nINSERT INTO db_table (id, data, meta)\nVALUES (1, 'data', 'meta')\nGO\nexit" > tempfile
cat tempfile - | tsql -H 10.10.10.10 -p 1433 -U user -P pass
Did you mean to do this: cat tempfile -? It means that it will wait for you to press Ctrl+D, because it is trying to read from standard input as well.
If not, remove the -.
Also, as Ignacio suggests, you could write it more cleanly as a heredoc:
tsql -H 10.10.10.10 -p 1433 -U user -P pass <<EOF
USE db
GO
INSERT INTO db_table (id, data, meta)
VALUES (1, 'data', 'meta')
GO
exit
EOF
Or just do the echo with literal newlines rather than \n:
echo "
USE db
GO
INSERT INTO db_table (id, data, meta)
VALUES (1, 'data', 'meta')
GO
exit
" > tempfile
and then run it by using standard input redirection (<) like this:
tsql -H 10.10.10.10 -p 1433 -U user -P pass < tempfile
Related
I need in a bash script a IF condition on the existence of a role in a PostgreSQL database. I have found solutions in SQL code [1, 2], but I need something I can use directly in bash, I assume with the help of psql. In [2] there are also psql solutions, but I don't manage to adapt it in a IF statement.
I have tried this unsuccessfully (I am a PostgreSQL and bash newbie):
psql_USER=my
if [ "$( psql -h db -U postgres --no-psqlrc --single-transaction --pset=pager=off --tuples-only --set=ON_ERROR_STOP=1 -tc "SELECT 1 FROM pg_user WHERE usename = $psql_USER" | grep -q 1 )" == '1' ] > /dev/null 2> /dev/null; then
echo "HOURRA !"
fi;
Result is:
Password for user postgres:
ERROR: column « my » does not exist
LINE 1: SELECT 1 FROM pg_user WHERE usename = my
^
I would avoid the quoting problem like this:
if psql -Atq -c "SELECT '#' || usename || '#' FROM pg_user" | grep -q '#'"$psql_USER"'#'
then
echo yes
fi
The psql invocation selects a list of all usernames, prefixed and suffixed with #. The grep has return code 0 if psql_USER contains one of these user names, else 1. The then branch of if is only taken if the return code of the pipeline is 0, that is, if the user exists in the database.
sample code below
psql -h $host -U postgres -d postgres -At -c "select partner_country_id as country , case when (threshold is null) then global_threshold else threshold end as threshold from ra_country_day_threshold " \
| while read -a Record
do
arrIN=(${Record[0]//|/ })
col1=${arrIN[0]}
col2=${arrIN[1]}
country_array["$col1"]="$col2"
echo "Col1:$col1 Col2:$col2"
done
echo "Elements:${country_array[#]}"
echo "length: ${#country_array[#]}"
Result
empty elements and length 0
The answer is simple, while command create a subprocess with its own context, if you create a new variable in that context, it will not be accessible outside of it.
Meaning the variable will not be accessible when you are outside the loop.
My suggestion is that you store the result inside a temporary file that will be available within all your script, then outside your loop, read that file.
I have a strange problem - possibly I'm just going blind. I have this short script, which replaces the string #qry# in the here-document with a select statement in a file and then pipes it to mysql:
#!/bin/bash
if [[ "$1" == "-h" ]]
then
echo "sqljob [sqlfile] [procnm] [host] [database] [config file]"
echo " sqlfile: text file containing an SQL statement"
echo " procnm: name that will given to the new, stored procedure"
echo " host: hostname of IP address of the database server"
echo " database: the procedure will be created here"
echo " config file: default configuration file with username and password"
exit
fi
infile=$1
procnm=$2
hn=$3
pn=$4
db=$5
mycfg=$6
{
set -o noglob
sed -e "s/#qry#/$(echo $(cat $infile))/g" <<!
drop procedure if exists $procnm;
delete from jobs where jobname="$procnm";
insert into jobs
set
notes="SQL job $procnm",
jobname="$procnm",
parm_tmpl='int';
delimiter //
create procedure $procnm(vqid int)
begin
call joblogmsg(vqid,0,"$procnm","","Executing #qry#");
drop table if exists ${procnm}_res;
create table ${procnm}_res as
#qry#
end//
delimiter ;
!
} | mysql --defaults-file=$mycfg -h $hn -P $pn $db
However, when the select contains *, it expands to whatever is in the directory even though I use noglob. However, it works from the command line:
$ set -o noglob
$ ls *
What am I doing wrong?
Edit
Block Comments in a Shell Script has been suggested as a duplicate, but as you will notice, I need to expand ${procnm} in the here-doc; I just need to avoid the same happening to select *.
I suspect it is because the construct echo (cat). The echo command gets the * from the cat command and the shell in which it runs expands it. In that shell set noglob is not active.
Try leaving the echo away: /$(cat $infile)/, in the end that is the data you need; then there is no extra glob expansion by a shell.
I am trying to export a few columns from a table as encoded integer.
Basically I want to use a bash script to pass the SQL command to mclient as command line argument. My bash script looks like:
#!/bin/bash
dir=`pwd`
for col in occupation native_country martial_status race sex
do
mclient -d adult -s \
"create function encode${col}(s varchar(200)) returns int begin return (select code from ${col}_dict where ${col}=s); end;"
mclient -d adult -s \
"COPY (select encode${col}($col) from adult) INTO '${dir}/${col}.txt' NULL AS '0'"
mclient -d adult -s \
"drop function encode${col}"
done
In each iteration, I want to create a SQL function on the fly. Then use the function to encode an attribute and export it to a text file. And lastly drop the function.
However, the output strangely contains some monster characters,
as if it can't recognize the function name.
If I remove the second mclient command, the other operations are successful.
operation successful
Function 'X�..X�' not defined
operation successful
operation successful
Function '��"X�.X�' not defined
operation successful
operation successful
Function ' X�.PX�' not defined
I'm a bit stuck, I need to loop through all of my mysql records and update one of the fields based on user input.
I was going to use the following to do the loop:
mysql -uuser -ppassword -s -e "SELECT company,product,category FROM MyTable"|while read varcomp varprod varcat;do
..and then use a PS3 select to provide the option:
PS3 "Please select new category: "
select opt1 in "Blocks" "Dolls" "Puzzles"
...before using, the following to update:
mysql -uuser -ppassword -s -e "UPDATE MyTable SET Category='$opt1' WHERE company='$varcomp' AND product='$varprod'"
...and then closing the loop.
I just can't seem to get all of the components to work together. I think it's because I'm using a while loop? Any advice on the best way to do this would be appreciated...
This should work:
while read -u 4 varcomp varprod varcat; do
echo "Company: $varcomp - Product: $varprod - Category: $varcat"
PS3="Please select new category: "
select opt in "Blocks" "Dolls" "Puzzles"; do
mysql -uuser -ppassword -s -e "UPDATE MyTable SET Category='$opt' WHERE company='$varcomp' AND product='$varprod';"
break
done
done 4< <(mysql -uuser -ppassword -s --skip-column-names -e "SELECT company,product,category FROM MyTable;")
You had the right idea, but the issue with using select inside a while read loop is that select and read both read input from stdin, so select would read all the SQL lines instead of prompting for user input. Instead, we redirect the mysql results to file descriptor 4, then tell read to use that instead of stdin, while select still reads from stdin as usual.
Note that if a user puts in a different value for select (eg 8 instead of 1, 2 or 3) then $opt will be null. You could replace the lines inside the select with:
[[ -n "$opt" ]] && mysql -uuser -ppassword -s -e "UPDATE MyTable SET Category='$opt' WHERE company='$varcomp' AND product='$varprod';" && break
This will keep prompting the user for input until they give a valid response.