Rooit

SELECT
		max( id ) AS id,
			count( 1 ) AS c ,
			number,
			reason,
			`title`,
			org_id,
			act_id,
			user_id,
			created_at
		FROM
			creations_copy1
		WHERE
			user_id != 0
		GROUP BY
			org_id,
			`act_id`,
			user_id,
			created_at
		HAVING
			c > 1
		ORDER BY
			c ASC

UPDATE creations_copy1 AS c
SET c.user_id = 0
WHERE
	c.id IN (
	SELECT
		a1.id
	FROM
		(
		SELECT
			max( id ) AS id,
			number,
			reason,
			`title`,
			org_id,
			act_id,
			user_id,
			created_at,
			count( 1 ) AS c
		FROM
			creations_copy1
		WHERE
			user_id != 0
			AND number = ''
		GROUP BY
			org_id,
			`act_id`,
			user_id,
			created_at
		HAVING
			c > 1
		ORDER BY
			created_at ASC
		) AS a1
	)

UPDATE creations AS c
SET c.created_at = DATE_ADD( c.created_at, INTERVAL 1 SECOND )
WHERE
	c.id IN (
	SELECT
		a1.id
	FROM
		(
		SELECT
			id,
			`title`,
			org_id,
			act_id,
			user_id,
			created_at,
			count( 1 ) AS c
		FROM
			creations
		WHERE
		    user_id = 0
		GROUP BY
			org_id,
			`act_id`,
			user_id,
			created_at
		HAVING
			c > 1
		ORDER BY
		c DESC
	) AS a1)

CREATE DEFINER=`root`@`localhost` PROCEDURE `UpdateProcess`()
BEGIN
UPDATE creations AS c
SET c.created_at = DATE_ADD( c.created_at, INTERVAL 1 SECOND )
WHERE
	c.id IN (
	SELECT
		a1.id
	FROM
		(
		SELECT
			id,
			`title`,
			org_id,
			act_id,
			user_id,
			created_at,
			count( 1 ) AS c
		FROM
			creations
		WHERE
		    user_id = 0
		GROUP BY
			org_id,
			`act_id`,
			user_id,
			created_at
		HAVING
			c > 1
		ORDER BY
		c DESC
	) AS a1);
END

按周
select DATE_FORMAT(create_time,'%Y%u') weeks,count(caseid) count from tc_case group by weeks;
按月
select DATE_FORMAT(create_time,'%Y%m') months,count(caseid) count from tc_case group by months;
按天
select DATE_FORMAT(create_time,'%Y%m%d') days,count(caseid) count from tc_case group by days;
按小时
select DATE_FORMAT(create_time,'%Y%m%d%H') hours,count(caseid) count from tc_case group by hours;
DATE_FORMAT方法说明
格式：DATE_FORMAT(date,format)
根据format字符串格式化date值。下列修饰符可以被用在format字符串中：
%M 月名字(January……December)
%W 星期名字(Sunday……Saturday)
%D 有英语前缀的月份的日期(1st, 2nd, 3rd, 等等。）
%Y 年, 数字, 4 位
%y 年, 数字, 2 位
%a 缩写的星期名字(Sun……Sat)
%d 月份中的天数, 数字(00……31)
%e 月份中的天数, 数字(0……31)
%m 月, 数字(01……12)
%c 月, 数字(1……12)
%b 缩写的月份名字(Jan……Dec)
%j 一年中的天数(001……366)
%H 小时(00……23)
%k 小时(0……23)
%h 小时(01……12)
%I 小时(01……12)
%l 小时(1……12)
%i 分钟, 数字(00……59)
%r 时间,12 小时(hh:mm:ss [AP]M)
%T 时间,24 小时(hh:mm:ss)
%S 秒(00……59)
%s 秒(00……59)
%p AM或PM
%w 一个星期中的天数(0=Sunday ……6=Saturday ）
%U 星期(0……52), 这里星期天是星期的第一天
%u 星期(0……52), 这里星期一是星期的第一天
%% 一个文字“%”。
按年汇总，统计：
select sum(mymoney) as totalmoney, count(*) as sheets from mytable group by date_format(col, '%Y');
按月汇总，统计：
select sum(mymoney) as totalmoney, count(*) as sheets from mytable group by date_format(col, '%Y-%m');
按季度汇总，统计：
select sum(mymoney) as totalmoney,count(*) as sheets from mytable group by concat(date_format(col, '%Y'),FLOOR((date_format(col, '%m')+2)/3));
select sum(mymoney) as totalmoney,count(*) as sheets from mytable group by concat(date_format(col, '%Y'),FLOOR((date_format(col, '%m')+2)/3));
按小时：
select sum(mymoney) as totalmoney,count(*) as sheets from mytable group by date_format(col, '%Y-%m-%d %H ');
查询 本年度的数据:
SELECT * FROM mytable WHERE year(FROM_UNIXTIME(my_time)) = year(curdate())
查询数据附带季度数:
SELECT id, quarter(FROM_UNIXTIME(my_time)) FROM mytable;
查询 本季度的数据:
SELECT * FROM mytable WHERE quarter(FROM_UNIXTIME(my_time)) = quarter(curdate());
本月统计:
select * from mytable where month(my_time1) = month(curdate()) and year(my_time2) = year(curdate())
本周统计:
select * from mytable where month(my_time1) = month(curdate()) and week(my_time2) = week(curdate())
N天内记录:
WHERE TO_DAYS(NOW())-TO_DAYS(时间字段)<=N

select @@GLOBAL.sql_mode;

set global sql_mode='STRICT_RANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

mysql --verbose --help | grep my.cnf

sql_mode=REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,NO_UNSIGNED_SUBTRACTION,NO_DIR_ IN_CREATE,POSTGRESQL,ORACLE,MSSQL,DB2,MAXDB,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,MYSQL 323,MYSQL40,ANSI,NO_AUTO_VALUE_ON_ZERO,NO_BACKSLASH_ESCAPES,STRICT_TRANS_TABLES,STRICT_ALL_TABLES, NO_ZERO_IN_DATE,NO_ZERO_DATE,ALLOW_INVALID_DATES,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,HIGH_NOT _PRECEDENCE,NO_ENGINE_SUBSTITUTION,PAD_CHAR_TO_FULL_LENGTH