What Are Date and Time Intervals

Q

What Are Date and Time Intervals? - MySQL FAQs - Introduction to SQL Date and Time Handling

✍: FYIcenter.com

A

A date and time interval is special value to be used to increment or decrement a date or a time at a given date or time unit. A data and time interval should be expression in the format of "INTERVAL expression unit", where "unit" and "expression" should follow these rules:

unit                 expression value format

MICROSECOND          MICROSECONDS 
SECOND               SECONDS 
MINUTE               MINUTES 
HOUR                 HOURS 
DAY                  DAYS 
WEEK                 WEEKS 
MONTH                MONTHS 
QUARTER              QUARTERS 
YEAR                 YEARS 
SECOND_MICROSECOND   'SECONDS.MICROSECONDS' 
MINUTE_MICROSECOND   'MINUTES.MICROSECONDS' 
MINUTE_SECOND        'MINUTES:SECONDS' 
HOUR_MICROSECOND     'HOURS.MICROSECONDS' 
HOUR_SECOND          'HOURS:MINUTES:SECONDS' 
HOUR_MINUTE          'HOURS:MINUTES' 
DAY_MICROSECOND      'DAYS.MICROSECONDS' 
DAY_SECOND           'DAYS HOURS:MINUTES:SECONDS' 
DAY_MINUTE           'DAYS HOURS:MINUTES' 
DAY_HOUR             'DAYS HOURS' 
YEAR_MONTH           'YEARS-MONTHS'

2007-05-11, 4567👍, 0💬

How To Enter Microseconds in SQL Statements
How To Enter Microseconds in SQL Statements? - MySQL FAQs - Introduction to SQL Date and Time Handling If you want to enter microseconds in a SQL statements, you can enter them right after the time string as a 6-digit number delimited with '.'. '0' will be padded to right if not enough digits. Here ... 2007-05-11, 7903👍, 0💬

How To Increment Dates by 1
How To Increment Dates by 1? - MySQL FAQs - Introduction to SQL Date and Time Handling If you have a date, and you want to increment it by 1 day, you can use the DATE_ADD(date, INTERVAL 1 DAY) function. You can also use the date interval add operation as "date + INTERVAL 1 DAY". The tutorial exercis... 2007-05-11, 6142👍, 0💬

How To Convert Character Strings to Dates
How To Convert Character Strings to Dates? - MySQL FAQs - Introduction to SQL Date and Time Handling If you have a character string that represents a date, and you want to convert it into a date value, you can use the STR_TO_DATE(string, format) function. STR_TO_DATE() shares the same formatting cod... 2007-05-11, 5259👍, 0💬

How To Convert Dates to Character Strings
How To Convert Dates to Character Strings? - MySQL FAQs - Introduction to SQL Date and Time Handling You can convert dates to character strings using the DATE_FORMAT(date, format) function. MySQL supports the following basic formatting codes: %a Abbreviated weekday name (Sun..Sat) %b Abbreviated mon... 2007-05-11, 5067👍, 0💬

How To Calculate the Difference between Two Dates
How To Calculate the Difference between Two Dates? - MySQL FAQs - Introduction to SQL Date and Time Handling If you have two dates, and you want to know how many days between them, you can use the DATEDIFF(date1, date2) function as shown below: SELECT DATEDIFF(DATE('1997-02-28'), DATE('1997-03-01'))... 2007-05-11, 4856👍, 0💬

How To Calculate the Difference between Two Time Values
How To Calculate the Difference between Two Time Values? - MySQL FAQs - Introduction to SQL Date and Time Handling If you have two time values, and you want to know the time difference between them, you can use the TIMEDIFF(time1, time2) function as shown below: SELECT TIMEDIFF(TIME('19:26:50'), TIM... 2007-05-11, 4724👍, 0💬

How To Write Date and Time Literals
How To Write Date and Time Literals? - MySQL FAQs - Introduction to SQL Date and Time Handling MySQL offers a number of formats for you to use to enter date and time literals: ANSI standard format: "YYYY-MM-DD HH:MM:SS". Non-standard limiters. Like: "YYYY/MM/DD HH^MM^SS" or "YYYY.MM.DD HH-MM-SS". No... 2007-05-11, 4667👍, 0💬

What Are Date and Time Intervals
What Are Date and Time Intervals? - MySQL FAQs - Introduction to SQL Date and Time Handling A date and time interval is special value to be used to increment or decrement a date or a time at a given date or time unit. A data and time interval should be expression in the format of "INTERVAL expressio... 2007-05-11, 4568👍, 0💬

How To Present a Past Time in Hours, Minutes and Seconds
How To Present a Past Time in Hours, Minutes and Seconds? - MySQL FAQs - Introduction to SQL Date and Time Handling If you want show an article was posted "n hours n minutes and n seconds ago", you can use the TIMEDIFF(NOW(), pastTime) function as shown in the following tutorial exercise: SELECT TIM... 2007-05-11, 4475👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.