create database using psql in shell script takes username as db name

Question

Following is the command I am using to create database in shell script

psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" \
            -c "CREATE DATABASE $database;"

It throws error

FATAL:  database "POSTGRES_USER" does not exist

If I print $database and $POSTGRES_USER they show correct values but when this command runs with some reason the username is passed as the database name.

any clue what I might be missing?

======

function create_db() {
    local database=$1
    local query_databases="select datname from pg_database;"
    local databases=$(echo "$query_databases" | psql -Aqt)
//this do not return any database but I have one db
    database_exist=$(containsElement "$databases" "$database")
    echo $database_exist;

    if [[ "$database_exist" == 1 ]]; then
        echo "Database '$database' exists. Skipping."
    else
        echo "Create Database '$database'"
        psql -v ON_ERROR_STOP=1 --username=$POSTGRES_USER \
             -c "CREATE DATABASE $database;"
    fi

}

taking reference from - https://github.com/mrts/docker-postgresql-multiple-databases/pull/10/files

It is a default. If you don't supply a database name, postgres uses the username as a database name. So: you should supply a database name on the commandline. (postgres,or template1) — wildplasser
– wildplasser, Commented Sep 18, 2019 at 21:34
@wildplasser shall I provide the name of the database which does not exists? — user269867
– user269867, Commented Sep 18, 2019 at 21:52
You should supply a database name that does exist. (postgres and template1 (almost) always exist) — wildplasser
– wildplasser, Commented Sep 18, 2019 at 22:09

iamkhush · Accepted Answer · 2019-09-18 21:31:23Z

1

You need to remove the " in the command.

psql -v ON_ERROR_STOP=1 --username $POSTGRES_USER -c "CREATE DATABASE $database;"

answered Sep 18, 2019 at 21:31

iamkhush

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1 Comment

user269867 Over a year ago

I still get the same error, I have updated with my function definition in the question.

GMB · Accepted Answer · 2019-09-18 21:32:07Z

1

You are not using psql terminal correctly. When using the long form of option, you need the = sign between the option and its value. Also the double quotes are not needed.

Consider:

psql -v ON_ERROR_STOP=1 --username=$POSTGRES_USER \
        -c "CREATE DATABASE $database;"

answered Sep 18, 2019 at 21:32

GMB

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1 Comment

user269867 Over a year ago

I still get the same error, I have updated with my function definition in the question.

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