# 创建小数据表 0-9

DROP TABLE IF EXISTS aa_numbers_small;

CREATE TABLE aa_numbers_small(

    number INT);

INSERT INTO aa_numbers_small VALUES(0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

SELECT * FROM aa_numbers_small;

# 创建大数据表 0-10000

DROP TABLE IF EXISTS aa_numbers;

CREATE TABLE aa_numbers(number BIGINT);

INSERT INTO aa_numbers

SELECT thousand.number*1000+hundred.number*100+ten.number*10+ones.number

FROM aa_numbers_small thousand, aa_numbers_small hundred, aa_numbers_small ten, aa_numbers_small ones

LIMIT 1000000;

SELECT * FROM aa_numbers;

# 创建时间维表

DROP TABLE IF EXISTS aa_date;

CREATE TABLE aa_date(

    date_id          BIGINT PRIMARY KEY,

    DATE             DATE NOT NULL,

    DAY              CHAR(10),

    day_of_week      INT,

    day_of_month     INT,

    day_of_year      INT,

    previous_day     DATE NOT NULL DEFAULT '0000-00-00',

    next_day         DATE NOT NULL DEFAULT '0000-00-00',

    weekend          CHAR(10) NOT NULL DEFAULT "Weekday",

    week_of_year     CHAR(2),

    MONTH            CHAR(10),

    month_of_year    CHAR(2),

    quarter_of_year INT,

    YEAR             INT,

    UNIQUE KEY `date` (`date`));

SELECT * FROM aa_date;

# 填充数据

INSERT INTO aa_date(date_id, DATE)

SELECT number, DATE_ADD('2018-01-01', INTERVAL number DAY)

FROM aa_numbers

WHERE DATE_ADD('2018-01-01', INTERVAL number DAY) BETWEEN '2018-01-01' AND '2018-12-31'

ORDER BY number;

# 根据日期update其他列数据

UPDATE aa_date SET

DAY             = DATE_FORMAT( DATE, "%W" ),

day_of_week     = DAYOFWEEK(DATE),

day_of_month    = DATE_FORMAT( DATE, "%d" ),

day_of_year     = DATE_FORMAT( DATE, "%j" ),

previous_day    = DATE_ADD(DATE, INTERVAL -1 DAY),

next_day        = DATE_ADD(DATE, INTERVAL 1 DAY),

weekend         = IF( DATE_FORMAT( DATE, "%W" ) IN ('Saturday','Sunday'), 'Weekend', 'Weekday'),

week_of_year    = DATE_FORMAT( DATE, "%V" ),

MONTH           = DATE_FORMAT( DATE, "%M"),

month_of_year   = DATE_FORMAT( DATE, "%m"),

quarter_of_year = QUARTER(DATE),

YEAR            = DATE_FORMAT( DATE, "%Y" );

# 测试

SELECT DATE_FORMAT('2018-05-29', '%W'); # Tuesday

SELECT DAYOFWEEK('2018-05-29'); # 3

SELECT DATE_FORMAT('2018-05-29', '%d'); # 29

SELECT DATE_FORMAT('2018-05-29', '%j'); # 149

SELECT DATE_ADD('2018-05-29', INTERVAL -1 DAY); # 2018-05-28

SELECT DATE_SUB('2018-05-29', INTERVAL 1 DAY); # 2018-05-28

SELECT DATE_ADD('2018-05-29', INTERVAL 1 DAY); # 2018-05-30

SELECT IF(DATE_FORMAT('2018-05-26', '%W') IN ('Saturday','Sunday'), 'Weekend', 'Weekday'); # Weekend

SELECT DATE_FORMAT('2018-05-29', '%V'); # 21

SELECT DATE_FORMAT('2018-05-29', '%M'); # May

SELECT DATE_FORMAT('2018-05-29', '%m'); # 05

SELECT QUARTER('2018-05-29') # 2

SELECT DATE_FORMAT('2018-05-29', '%Y');# 2018