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CS/INFO 4154:Analytics-driven Game Design

SQL

Class 20:

Final Course Deadlines We will not meet during the scheduled exam time Final report will be due at the end of exam time Cornell cannot delete exam from Student Center Final (Kongregate) Report due: Saturday,

December 9th, NOON Final Peer Evaluations due: Monday, December

11th, 11:59pm

Mon Wed Fri

10/11MySQL

10/13Beta Playtesting 1

10/16Beta Playtesting 2

10/18Beta Postmortems

10/19: Midterm Peer Evaluations Due

Beta Postmortems Similar to Alpha postmortems Report something learned from analytics

perfectly fine if not very insightful e.g. players clicked 5436 times!

Today Basic MySQL How the tables are implemented on GDIAC Open office hours

SQL Structured Query Language a programming language designed to manage data

stored in relational databases

SHOW TABLES Shows tables within current database

mysql> SHOW TABLES;

+----------------------------+| player_action_log || player_pageload_log || player_quest_log || users |+----------------------------+4 rows in set (0.00 sec)

Sample table: actionsplayer_id quest_id action_id time detail0 0 0 14 (2, 2)0 0 1 16 (2, 4)0 0 2 19 (1, 3)0 1 2 20 (1, 1)1 0 2 78 (2, 1)1 1 2 80 (3, 8)

DESCRIBE Tells you the table schema Example:

DESCRIBE actions;important

+-----------+--------------+------+-----+---------+-------+| Field | Type | Null | Key | Default | Extra |+-----------+--------------+------+-----+---------+-------+| player_id | int(11) | YES | | NULL | || quest_id | int(11) | YES | | NULL | || level_id | int(11) | YES | | NULL | || time | int(11) | YES | | NULL | || detail | varchar(255) | YES | | NULL | |+-----------+--------------+------+-----+---------+-------+

SELECT The basic query

SELECT <attributes>FROM <one or more tables>;

SELECTplayer_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT player_id FROM actions;player_id

0

0

0

0

1

1

DISTINCT Filters results for unique values Can be used as a keyword:

SELECT DISTINCT player_id FROM actions; Can also be used as a function:

SELECT DISTINCT(player_id) FROM actions;

DISTINCTplayer_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT DISTINCT player_idFROM actions; player_id

0

1

COUNT() Function that counts number of rows Usage: COUNT(<rows>) Example:

SELECT COUNT(player_id) FROM actions;

COUNT()player_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT COUNT(player_id)FROM actions; COUNT(player_id)

6

How do I?player_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

How do I get the number of unique players?SELECT COUNT(DISTINCT(player_id)) FROM actions

COUNT(DISTINCT(player_id))

2

SELECT *

player_id quest_id action_id time detail0 0 0 14 (2, 2)0 0 1 16 (2, 4)0 0 2 19 (1, 3)0 1 2 20 (1, 1)1 0 2 78 (2, 1)1 1 2 80 (3, 8)

SELECT * returns all rows Example:

SELECT * FROM actions;

WHERE Specifies constraints Example:

SELECT * FROM actions WHERE time>20;

WHEREplayer_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT * FROM actions WHERE time>20player_id quest_id action_id time detail

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

WHERE Specifies constraints Example:

SELECT * FROM actions WHERE time>20; Can combine WHERE constraints with AND:

SELECT * FROM actions WHERE time<15 AND player_id=0;

How do I?

Count # of actions with id=2?

player_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT COUNT(*) FROM actions WHERE action_id=2;

How do I?

Count # of players who had an action with id=1?


0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT COUNT(DISTINCT(player_id)) FROM actions WHERE action_id=1;

How do I?

Count # of players who performed an action at (2,x)?


0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

Can’t do this yet.

LIKE Specifies looser constraints:

_ matches a single character % matches any number of characters

Example:SELECT * FROM actions WHERE detail LIKE ‘(2,_)’;

WHEREplayer_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT * FROM actions WHERE detail LIKE ‘(2,_)’;player_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

1 0 2 78 (2, 1)

How do I?

Count # of players who performed an action in quest #1 at (x,8)


0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

SELECT COUNT(DISTINCT(player_id)) FROM actionsWHERE quest_id=1 AND detail LIKE '(_,8)';

How do I…player_id quest_id action_id time detail

0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)

player_id player_info

0 Windows

1 Linux

actions

players

Get all actions performed on Windows?

INNER JOIN Merges tables Example:

SELECT * FROM actions INNER JOIN players ON players.player_id=actions.player_id;


0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)


0 Windows

1 Linuxactions

players

SELECT * FROM actions INNER JOIN players ON players.player_id=actions.player_id;

player_id quest_id action_id time detail player_id player_info

0 0 0 14 (2, 2) 0 Windows

0 0 1 16 (2, 4) 0 Windows

0 0 2 19 (1, 3) 0 Windows

0 1 2 20 (1, 1) 0 Windows

1 0 2 78 (2, 1) 1 Linux

1 1 2 80 (3, 8) 1 Linux


0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)


0 Windows

1 Linuxactions

players

SELECT * FROM actions INNER JOIN players ON players.player_id=actions.player_id WHERE players.player_info=‘Windows’;

player_id quest_id action_id time detail player_id player_info

0 0 0 14 (2, 2) 0 Windows

0 0 1 16 (2, 4) 0 Windows

0 0 2 19 (1, 3) 0 Windows

0 1 2 20 (1, 1) 0 Windows

Count the # of actions that happened on Linux at (2,x)? SELECT COUNT(*) FROM actions INNER JOIN players ONplayers.player_id=actions.player_id WHERE player_info='Linux' AND detail LIKE '(2,_)';


0 0 0 14 (2, 2)

0 0 1 16 (2, 4)

0 0 2 19 (1, 3)

0 1 2 20 (1, 1)

1 0 2 78 (2, 1)

1 1 2 80 (3, 8)


0 Windows

1 Linuxactions

players

Count the # of unique players that played on Windows and performed an action after time=15?SELECT COUNT(DISTINCT(players.player_id)) FROM actions INNER JOIN players ON players.player_id=actions.player_idWHERE player_info='Windows' AND actions.time>15;

Four tables

Users

Sessions

Tasks

Actions

users

player_pageload_log

player_quest_log

player_action_log

Users: users user_id user_info

user ID (automatic)user details (if you provided them)

Sessions: player_pageload_log client_timestamp log_id user_id server_timestamp game_id version_id session_id

when the client recorded the eventoverall ID; continually incrementsuser ID (automatic)when the server recorded the eventyour game IDyour version IDID for this play session (automatic)

Tasks: player_quest_log log_quest_id quest_id log_quest_ts user_id game_id version_id dynamic_quest_id quest_detail session_seq_id session_id client_timestamp level_end_timestamp

overall ID; continually incrementsID for the task/level/questwhen the server recorded the eventuser ID (automatic)your game IDyour version IDunique ID for this specific quest instancequest details (if you provided them)which task in this sessionID for this play session (automatic)when the client recorded the eventwhen the client finished the task

Actions: player_action_log client_timestamp log_id game_id quest_id user_id action_id action_detail log_timestamp session_seq_id quest_seq_id

when the client recorded the eventoverall ID; continually incrementsyour game IDID for this task/level/questuser ID (automatic)ID for this actionaction details (if you provided them)when the server recorded the eventwhich action in this sessionwhich action in this task

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