Execute multiline mysql in shellscript - mysql

Question

When I attempt to execute a multi-line SQL in mysql via shell script:
mysql -uroot -ppass mydb <<<EOF
SELECT * INTO OUTFILE 'table.csv'
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY '\n'
FROM mytable limit 1;
EOF
I get a syntax error:
ERROR 1064 (42000) at line 1: You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'EOF' at line 1
What's the right way to script it?

Answer 1

The syntax for bash heredoc is:
COMMAND <<InputComesFromHERE
...
...
...
InputComesFromHERE
So you have an extra <.
In order to prepare and test you can replace COMMAND (i.e. mysql -uroot -ppass mydb in this case) with cat to have a look at the exact SQL code that will be executed.

Answer 2

For future readers, one easy way is as follows if they wish to export in bulk using bash, tested on mariadb, same should work in mysql too.
akshay#ideapad:/tmp$ mysql -u someuser -p test -e "select * from offices"
Enter password:
+------------+---------------+------------------+--------------------------+--------------+------------+-----------+------------+-----------+
| officeCode | city | phone | addressLine1 | addressLine2 | state | country | postalCode | territory |
+------------+---------------+------------------+--------------------------+--------------+------------+-----------+------------+-----------+
| 1 | San Francisco | [phone] | 100 Market Street | Suite 300 | CA | USA | 94080 | NA |
| 2 | Boston | [phone] | 1550 Court Place | Suite 102 | MA | USA | 02107 | NA |
| 3 | NYC | [phone] | 523 East 53rd Street | apt. 5A | NY | USA | 10022 | NA |
| 4 | Paris | [phone] | 43 Rue Jouffroy D'abbans | NULL | NULL | France | 75017 | EMEA |
| 5 | Tokyo | [phone] | 4-1 Kioicho | NULL | Chiyoda-Ku | Japan | 102-8578 | Japan |
| 6 | Sydney | [phone] | 5-11 Wentworth Avenue | Floor #2 | NULL | Australia | NSW 2010 | APAC |
| 7 | London | [phone] | 25 Old Broad Street | Level 7 | NULL | UK | EC2N 1HN | EMEA |
+------------+---------------+------------------+--------------------------+--------------+------------+-----------+------------+-----------+
If you're exporting by non-root user then set permission like below
root#ideapad:/tmp# mysql -u root -p
MariaDB[(none)]> UPDATE mysql.user SET File_priv = 'Y' WHERE user='someuser' AND host='localhost';
Restart or Reload mysqld
akshay#ideapad:/tmp$ sudo su
root#ideapad:/tmp# systemctl restart mariadb
Sample code snippet
akshay#ideapad:/tmp$ cat test.sh
#!/usr/bin/env bash
user="someuser"
password="password"
database="test"
mysql -u"$user" -p"$password" "$database" <<EOF
SELECT *
INTO OUTFILE '/tmp/csvs/offices.csv'
FIELDS TERMINATED BY '|'
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
FROM offices;
EOF
Execute
akshay#ideapad:/tmp$ mkdir -p /tmp/csvs
akshay#ideapad:/tmp$ chmod +x test.sh
akshay#ideapad:/tmp$ ./test.sh
akshay#ideapad:/tmp$ cat /tmp/csvs/offices.csv
"1"|"San Francisco"|"[phone]"|"100 Market Street"|"Suite 300"|"CA"|"USA"|"94080"|"NA"
"2"|"Boston"|"[phone]"|"1550 Court Place"|"Suite 102"|"MA"|"USA"|"02107"|"NA"
"3"|"NYC"|"[phone]"|"523 East 53rd Street"|"apt. 5A"|"NY"|"USA"|"10022"|"NA"
"4"|"Paris"|"[phone]"|"43 Rue Jouffroy D'abbans"|\N|\N|"France"|"75017"|"EMEA"
"5"|"Tokyo"|"[phone]"|"4-1 Kioicho"|\N|"Chiyoda-Ku"|"Japan"|"102-8578"|"Japan"
"6"|"Sydney"|"[phone]"|"5-11 Wentworth Avenue"|"Floor #2"|\N|"Australia"|"NSW 2010"|"APAC"
"7"|"London"|"[phone]"|"25 Old Broad Street"|"Level 7"|\N|"UK"|"EC2N 1HN"|"EMEA"