The following code will connect to a MySQL server, it will get a list of integers and convert the results to a bash array that will be iterated using a for
loop and they will be printed using zero padding.
IDS_RAW=$(mysql --user="myuser" --password="mypass" --host="db.example.com" --database="mydb" --batch --compress --skip-column-names --execute=" SELECT Id FROM Users WHERE Status = 0; "); OLDIFS=$IFS; IFS=$'\n' command eval; 'IDS=($IDS_RAW)'; IFS=$OLDIFS; echo "Will process the following user IDs '${IDS[@]}'"; for ID in "${IDS[@]}"; do LEADING_ZERO=$(printf %08d $ID); echo "ID $LEADING_ZERO"; done;
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