SQL and NOW() into bash script - sql

Question

I have a file, "sharp.csv" in which data are like this :
<name>;<src_ip_address>;<mac_address>;<ip_address>;Vlan1;NOW()
Edit : These data are filled by a perl script
I want to insert these data into a SQL database with the help of a BASH script
+---------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+---------------+-------------+------+-----+---------+-------+
| code_site | varchar(64) | NO | PRI | NULL | |
| ip_source | varchar(64) | NO | PRI | NULL | |
| mac_relevee | varchar(64) | NO | PRI | NULL | |
| ip_relevee | varchar(64) | YES | | NULL | |
| vlan_concerne | varchar(64) | YES | | NULL | |
| date_polling | datetime | YES | | NULL | |
+---------------+-------------+------+-----+---------+-------+
So my commands are just :
arp_router_file="$DIR/working-dir/sharp.csv"
db_arp_router_table="routeur_arp"
$mysql -h $db_address -u $db_user -p$db_passwd $db_name -e "load data local infile '$arp_router_file' REPLACE INTO TABLE $db_arp_router_table fields terminated by ';';"
But my NOW() command won't work.
Data are beeing inserted, but the "date_polling" row is filled with "0000-00-00 00:00:00"

Answer 1

NOW() is a function but the load data command will treat all the fields in the input file as literal data, thus trying to insert "NOW()" in a datetime field. The string "NOW()" can't be converted to a valid datetime value, so you end up with the default "0000-00-00 00:00:00" value.
You will have to build actual SQL INSERT queries from your input file, you can do this using awk:
cat input_file.csv | awk -F';' '{print "INSERT INTO routeur_arp (code_site, ip_source, mac_relevee, ip_relevee, vlan_concerne, date_polling) VALUES (\"" $1 "\", \"" $2 "\", \"" $3 "\", \"" $4 "\", \"" $5 "\", " $6 ");"}' > sql_statements.sql

Answer 2

To avoid sending NOW() instruction to MySQL, i'll send it a datetime with perl
use Time::Piece ;
my $t = localtime ;
my $date = $t->ymd;
my $time = $t->hms;
And instead of
<name>;<src_ip_address>;<mac_address>;<ip_address>;Vlan1;NOW()
It'll be
<name>;<src_ip_address>;<mac_address>;<ip_address>;Vlan1;$date $time\n
Perl send it as a String, MySQL understand is as a correct Datetime