create table t1 (`a` blob);
insert into t1 values("hello world"),("Hello mars"),(NULL);
select * into outfile "../../tmp/outfile-test.1" from t1;
select load_file('../../tmp/outfile-test.1');
load_file('../../tmp/outfile-test.1')
hello world
Hello mars
\N

select * into dumpfile "../../tmp/outfile-test.2" from t1 limit 1;
select load_file('../../tmp/outfile-test.2');
load_file('../../tmp/outfile-test.2')
hello world
select * into dumpfile "../../tmp/outfile-test.3" from t1 where a is null;
select load_file('../../tmp/outfile-test.3');
load_file('../../tmp/outfile-test.3')
 
select * into outfile "../../tmp/outfile-test.1" from t1;
ERROR HY000: File '../../tmp/outfile-test.1' already exists
select * into dumpfile "../../tmp/outfile-test.2" from t1;
ERROR HY000: File '../../tmp/outfile-test.2' already exists
select * into dumpfile "../../tmp/outfile-test.3" from t1;
ERROR HY000: File '../../tmp/outfile-test.3' already exists
select load_file('../../tmp/outfile-test.not-exist');
load_file('../../tmp/outfile-test.not-exist')
NULL
drop table t1;
select 1 into outfile "../../tmp/outfile-test.4";
select load_file('../../tmp/outfile-test.4');
load_file('../../tmp/outfile-test.4')
1

CREATE TABLE t1 (a INT);
EXPLAIN
SELECT *
INTO OUTFILE '/tmp/t1.txt'
  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\r\n'
  FROM t1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	system	NULL	NULL	NULL	NULL	0	Const row not found
DROP TABLE t1;
SELECT * INTO OUTFILE "../../tmp/outfile-test.4"
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
FROM information_schema.schemata LIMIT 0, 5;
use information_schema;
SELECT * INTO OUTFILE "../../tmp/outfile-test.4"
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
FROM schemata LIMIT 0, 5;
use test;
create table t1(a int);
select * into outfile "MYSQL_TEST_DIR/outfile-test1" from t1;
ERROR HY000: The MariaDB server is running with the --secure-file-priv option so it cannot execute this statement
drop table t1;
create database mysqltest;
create user user_1@localhost;
grant all on mysqltest.* to user_1@localhost;
connect  con28181_1,localhost,user_1,,mysqltest;
select schema_name
into outfile "../../tmp/outfile-test.4"
fields terminated by ',' optionally enclosed by '"'
 lines terminated by '\n'
from information_schema.schemata
where schema_name like 'mysqltest';
ERROR 28000: Access denied for user 'user_1'@'localhost' (using password: NO)
connection default;
disconnect con28181_1;
grant file on *.* to user_1@localhost;
connect  con28181_2,localhost,user_1,,mysqltest;
select schema_name
into outfile "../../tmp/outfile-test.4"
fields terminated by ',' optionally enclosed by '"'
 lines terminated by '\n'
from information_schema.schemata
where schema_name like 'mysqltest';
connection default;
disconnect con28181_2;
use test;
revoke all privileges on *.* from user_1@localhost;
drop user user_1@localhost;
drop database mysqltest;