I have this bash script which connects to a postgre sql db and performs a query. I would like to be able to read line from a .txt file into the query as parameters. What is the best way to do that? Your assistance is greatly appreciated! I have my example code below however it is not working.
#!/bin/sh
query="SELECT ci.NAME_VALUE NAME_VALUE FROM certificate_identity ci WHERE ci.NAME_TYPE = 'dNSName' AND reverse(lower(ci.NAME_VALUE)) LIKE reverse(lower('%.$1'));"
(echo $1; echo $query | \
psql -t -h crt.sh -p 5432 -U guest certwatch | \
sed -e 's:^ *::g' -e 's:^*\.::g' -e '/^$/d' | \
sed -e 's:*.::g';) | sort -u
Considering that the file has only one sql query per line:
while read -r line; do echo "${line}" | "your code to run psql here"; done < file_with_query.sql
That means: while read the content of file_with_query.sql line by line, do something with each line.
I need to execute SQL from batch file.
I am executing following to connect to Postgres and select data from table
C:/pgsql/bin/psql -h %DB_HOST% -p 5432 -U %DB_USER% -d %DB_NAME%
select * from test;
I am able to connect to database, however I'm getting the error
'select' is not recognized as an internal or external command,
operable program or batch file.
Has anyone faced such issue?
This is one of the query i am trying, something similar works in shell script, (please ignore syntax error in the query if there are any)
copy testdata (col1,col2,col3) from '%filepath%/%csv_file%' with csv;
You could pipe it into psql
(
echo select * from test;
) | C:/pgsql/bin/psql -h %DB_HOST% -p 5432 -U %DB_USER% -d %DB_NAME%
When closing parenthesis are part of the SQL query they have to be escaped with three carets.
(
echo insert into testconfig(testid,scenarioid,testname ^^^) values( 1,1,'asdf'^^^);
) | psql -h %DB_HOST% -p 5432 -U %DB_USER% -d %DB_NAME%
Use the -f parameter to pass the batch file name
C:/pgsql/bin/psql -h %DB_HOST% -p 5432 -U %DB_USER% -d %DB_NAME% -f 'sql_batch_file.sql'
http://www.postgresql.org/docs/current/static/app-psql.html
-f filename
--file=filename
Use the file filename as the source of commands instead of reading commands interactively. After the file is processed, psql terminates. This is in many ways equivalent to the meta-command \i.
If filename is - (hyphen), then standard input is read until an EOF indication or \q meta-command. Note however that Readline is not used in this case (much as if -n had been specified).
if running on Linux, this is what worked for me (need to update values below with your user, db name etc)
psql "host=YOUR_HOST port=YOUR_PORT dbname=YOUR_DB_NAME user=YOUR_USER_NAME password=YOUR_PASSWORD" -f "fully_qualified_path_to_your_script.sql"
You cannot put the query on separate line, batch interpreter will assume it's another command instead of a query for psql. I believe you will need to quote it as well.
I agree with Spidey:
1] if you are passing the file with the sql use -f or --file parameter
When you want to execute several commands the best way to do that is to add parameter -f, and after that just type path to your file without any " or ' marks (relative paths works also):
psql -h %host% -p 5432 -U %user% -d %dbname% -f ..\..\folder\Data.txt
It also works in .NET Core. I need it to add basic data to my database after migrations.
Kindly refer to the documentation
1] if you are passing the file with the sql use -f or --file parameter
2] if you are passing individual command use -c or --command parameter
If you are trying the shell script
psql postgresql://$username:$password#$host/$database < /app/sql_script/script.sql
I have a query written in a file located at /path/to/query. How can I save the output result to a csv file, without using COPY in the query? I tried the following command, but the output file's fields are separated by " | ".
psql -U username -d dbname -f /path/to/query -o /path/to/output/file -F ','
It is not explained in the documentation, but the -F option requires the -A option (unaligned table output) to work:
psql -U username -d dbname -f /path/to/query -o /path/to/output/file -F ',' -A
If you don't wish the headers in your csv, this means, without extra rows at the top and at the bottom, use the -t option too.
psql -U username -d dbname -f /path/to/query -o /path/to/output/file -F ',' -A -t
From the help:
-A, --no-align unaligned table output mode
-F, --field-separator=STRING
set field separator (default: "|")
-t, --tuples-only print rows only
I am using dwloader utility to load data into PDW. My dwloader syntax is given below:
dwloader.exe -M reload -b 200000 -i \d\Development\Source\FACT.TXT -T Test_DB.dbo.FACT_LOAD -R \d\Development\Bad\FACT_LOAD.bad -t "," -fh 1 -r \r\n -D "yyyy-MM-dd" -E -S 10.1.1.19 -U Devl_User -P Password1> "\d\Development\Log\FACT_LOAD.log"
Pause
I got the data loaded into the table. But all the varchar columns have data within double 'quotes'. My text file is commma delimited. Any idea on how to include the text qualifier in the above syntax?
I figured the answer myself. Including " -s 0x22" in the command above will escape the double quotes.
I have a bash script to call a select in postgres. I would like to be able to pass a variable from the command line into the sql file.
sh myscript.sh 1234
#!/bin/bash
dbase_connect="psql -h server -U username dbase"
file="/tmp/$fname.csv"
sql="/home/user/sql_files/query.sql"
sudo bash -c "$dbase_connect -c -q -A -F , -f $sql -o $file"
The query can be as simple as:
select name from table where id = $1;
But I don't know how to call the $1 into the sql file. The actual query is much larger and I prefer to keep it out of the bash query itself because it is easier to maintain when called as a seperate .sql file.
you can use sed to insert parameter :
#!/bin/bash
dbase_connect="psql -h server -U username dbase"
file="/tmp/$fname.csv"
sql="/home/user/sql_files/query.sql"
tmp="home/user/sql_files/query.sql.tmp"
s="s/\$1/$1/g"
cat $sql | sed $s > $tmp
sudo bash -c "$dbase_connect -c -q -A -F , -f $tmp -o $file"
rm -f $tmp