how to get SQL query output from sqlplus to bash script

Question

how to execute sql query or script using sqlplus as the middle man and insert output to bash variable?

Answer 1

nothing worked for me of the (at least) 3 good looking stack-overflow and other websites tutorials so I'm posting what worked for me, for the of chance that it will be useful to some one else.

the code:

#!/bin/bash
export ORACLE_SID=<DB_SID>
VAL=""
VAL=`sqlplus -s / as sysdba << EOF
whenever sqlerror exit sql.sqlcode;
set echo off
set heading off
@<sql_script_path>
exit;
EOF`
echo $VAL