MYSQL中取当前周/月/季/年的第一天与最后一天
源地址:http://www.2cto.com/database/201308/240281.html
整理后的sql代码,全部可执行
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#当年第一天:
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SELECT DATE_SUB(CURDATE(),INTERVAL dayofyear(now())-1 DAY);
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#当年最后一天:
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SELECT concat(YEAR(now()),'-12-31');
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#当前week的第一天:
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select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 1 DAY);
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#当前week的最后一天:
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select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) - 5 DAY);
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#前一week的第一天:
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select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 8 DAY);
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#前一week的最后一天:
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select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 2 DAY);
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#前两week的第一天:
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select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 15 DAY);
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#前两week的最后一天:
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select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 9 DAY);
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#当前month的第一天:
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SELECT concat(date_format(LAST_DAY(now()),'%Y-%m-'),'01');
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#当前month的最后一天:
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SELECT LAST_DAY(now());
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#前一month的第一天:
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SELECT concat(date_format(LAST_DAY(now() - interval 1 month),'%Y-%m-'),'01');
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#前一month的最后一天:
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SELECT LAST_DAY(now() - interval 1 month);
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#前两month的第一天:
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SELECT concat(date_format(LAST_DAY(now() - interval 2 month),'%Y-%m-'),'01');
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#前两month的最后一天:
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SELECT LAST_DAY(now() - interval 2 month);
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#当前quarter的第一天:
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select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-3 month),'%Y-%m-'),'01');
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#当前quarter的最后一天:
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select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-1 month);
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#前一quarter的第一天:
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select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-6 month),'%Y-%m-'),'01');
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#前一quarter的最后一天:
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select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-4 month);
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#前两quarter的第一天:
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select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-9 month),'%Y-%m-'),'01');
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#前两quarter的最后一天:
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select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-7 month);