-- --------------------------------------------------------

--
-- Table structure for table ci_sessions
--

CREATE TABLE ci_sessions (
  session_id varchar(40)  NOT NULL DEFAULT '0',
  ip_address varchar(16)  NOT NULL DEFAULT '0',
  user_agent varchar(150)  NOT NULL,
  last_activity integer NOT NULL DEFAULT '0',
  user_data text  NOT NULL,
  PRIMARY KEY (session_id)
);

-- --------------------------------------------------------

--
-- Table structure for table login_attempts
--

CREATE TABLE login_attempts (
  id serial,
  ip_address varchar(40)  NOT NULL,
  login varchar(50)  NOT NULL,
  time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- --------------------------------------------------------

--
-- Table structure for table user_autologin
--

CREATE TABLE user_autologin (
  key_id char(32)  NOT NULL,
  user_id integer NOT NULL DEFAULT '0',
  user_agent varchar(150)  NOT NULL,
  last_ip varchar(40)  NOT NULL,
  last_login timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (key_id,user_id)
);

-- --------------------------------------------------------

--
-- Table structure for table user_profiles
--

CREATE TABLE user_profiles (
  id serial,
  user_id integer NOT NULL,
  country varchar(20)  DEFAULT NULL,
  website varchar(255)  DEFAULT NULL
);

-- --------------------------------------------------------

--
-- Table structure for table users
--

CREATE TABLE users (
  id serial,
  username varchar(50)  NOT NULL,
  password varchar(255)  NOT NULL,
  email varchar(100)  NOT NULL,
  activated smallint NOT NULL DEFAULT '1',
  banned smallint NOT NULL DEFAULT '0',
  ban_reason varchar(255)  DEFAULT NULL,
  new_password_key varchar(50)  DEFAULT NULL,
  new_password_requested timestamp DEFAULT NULL,
  new_email varchar(100)  DEFAULT NULL,
  new_email_key varchar(50)  DEFAULT NULL,
  last_ip varchar(40)  NOT NULL,
  last_login timestamp DEFAULT CURRENT_TIMESTAMP,
  created timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  modified timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- --------------------------------------------------------

--
-- Update datetime columns on update
--

CREATE OR REPLACE FUNCTION update_modified_column_time()
	RETURNS TRIGGER AS $$
	BEGIN
	   NEW.time = now(); 
	   RETURN NEW;
	END;
	$$ language 'plpgsql';

CREATE TRIGGER update_login_attempts_time BEFORE UPDATE
	ON login_attempts FOR EACH ROW EXECUTE PROCEDURE 
	update_modified_column_time();

CREATE OR REPLACE FUNCTION update_modified_column_user_autologin()
	RETURNS TRIGGER AS $$
	BEGIN
	   NEW.last_login = now(); 
	   RETURN NEW;
	END;
	$$ language 'plpgsql';

CREATE TRIGGER update_login_attempts_user_autologin BEFORE UPDATE
	ON user_autologin FOR EACH ROW EXECUTE PROCEDURE 
	update_modified_column_user_autologin();


CREATE OR REPLACE FUNCTION update_modified_column_users()
	RETURNS TRIGGER AS $$
	BEGIN
	   NEW.modified = now(); 
	   RETURN NEW;
	END;
	$$ language 'plpgsql';

CREATE TRIGGER update_login_attempts_users BEFORE UPDATE
	ON users FOR EACH ROW EXECUTE PROCEDURE 
	update_modified_column_users();

http://konyukhov.com/soft/tank_auth/

Tank Auth Version  1.0.7\r\nCodeIgniter Version 1.7.2

Create tables for the codeigniter library  Tank Auth in PostgreSQL

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