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The date functions in SQL usually use the abbreviation of daypart. Value SQL Server) (Access and Asp) Description Year YY Yyyy 1753 ~ 9999 Quarter Qq Q Season 1 ~ 4 Month Mm M Month 1 ~ 12 Day of year
, intercept three, index starting from 1 3, Time function (all the time to add single quotation marks) --Get current system time getdate (); Sysdatetime () Get server time --Get Month day --Determine if the date is correct isdate ()Select IsDate () returns the bit type, False is 0,true is 1 --Add Time DateAddSelect DATEADD (Time to add, time) Year value, month value, day value --return days of the week DatenameSelect Datename (Weekday, time)You can al
SQL Server uses date to represent dates, time to represent times, and datetime and datetime2 to represent dates and times.1, the precision of the second refers to the number of decimal places used to represent 1s:The precision of the datetime data type seconds is 3,datetime2 and time can control the precision of the second,The syntax is DateTime2 (n) and Time (n), and the value range for n is 0-7, and the d
File name: date.inc.php3 Before using these two functions, convert the date or datetime to the timestamp type. Such as: $today =mktime (0,0,0,date ("M"), Date ("D"), Date ("Y")); /**** simulation of DATEADD functions in
; 7. Rounding The ROUND () function is also used for numerical rounding. SELECT ROUND (56.670) roundValue1, ROUND (56.671) roundValue2, ROUND (-56.670) roundValue3; 8. Find the sine value SELECT SIN (56.67) Sinvalue; 9. Calculate Cosine value SELECT COS (56.67) Cosvalue; 10. To find the sine value of the inverse SELECT 1 / 56.67 , ASIN (1/56.67) Asinvalue; 11. To find the inverse cosine value SELECT 1 / 56.67 , ACOS (1/56.67) Acosvalue; 12. To find the tangent val
not preserved by default Stuff (string expression 1, start position, length, string expression 2) Select Stuff (' abcdef ', 2, 2, ' 123 ')Back to A123def Deletes a specified length of character at the specified beginning in string expression 1, and inserts a string expression 2 at the beginning of the specified position. Returns a new string Substring (string expression, start position, length) Select substring (' abcdef ', 2,2) return BC
the location of a table reference in a Transact-SQL statement. Security functions Returns information about users and roles. String functions You can change the values of char, varchar,nchar,nvarchar,binary, and varbinary. System functions Manipulate or rep
the day of the year,DW represents the day of the week and returns an integer default of 1 for SundayGETDATE No parametersSelect GETDATE ()Back to 2009-04-28 18:57:24.153Returns the current system date and time.DayDateSelect Day (' 2007-12-11 ') returns 11Returns an Integer that represents the part of the day of the specified date.Equivalent toDATEPART (dd, date)MonthDateSelect month (' 2007-12-11 ') return
FileName: date.inc.php3 Before you use these two functions, you must first convert the date or datetime to the timestamp type. Such as: $today =mktime (0,0,0,date ("M"), Date ("D"), Date ("Y")); /**** simulate the DATEADD function in SQ
for SundayGETDATE No parametersSelect GETDATE ()Back to 2009-04-28 18:57:24.153Returns the current system date and time.DayDateSelect Day (' 2007-12-11 ') returns 11Returns an Integer that represents the part of the day of the specified date.Equivalent toDATEPART (dd, date)MonthDateSelect month (' 2007-12-11 ') returns 12Returns an Integer that represents the part of the month of the specified date.Equival
Read Catalogue Get Current Month Day Ways to get a variety of dates function parameters/Functions Back to TopGet current Month daySelect MONTH (GETDATE ()) 6 Year () gets yearsDay () Get dateSelect Day (GETDATE ())Use Datename () to obtain the day of the monthSelect GETDATE () as ' current date ' select Datename (Year,getdate ()) as ' year ' Select Datename (Month,get
Tags: SQL Oracle server DB2 time functionSQL Server Time article: *************************************************************One, Time function--getdate Get current timeSelect GETDATE ()--dateadd Original time Add: 2013-02-17 13:20:16 this time plus 12 monthsSelect DATEADD (month,12, ' 2013-02-17 13:20:16 ')--return: 2014-02-17 13:20:16.000 (parameter MONTH can be changed to day,year etc. date plus corres
Tags: start input trail Mat Average SQL function tin padded user1.SQL function(1) Character function: mainly manipulating strings(2) Number function: The number of numeric types is mainly manipulated(3) Conversion functions: These functions convert data from one data type to another data type(4)
Simulate two SQL server functions: dateadd () and datediff ().? Php file name: date. inc. php3 before using these two functions, you must first convert the date or date to the timestamp type. For example: $ todaymktime (0, 0, 0,
the maximum length. 5) data stored in the IMAGE type is converted to the BINARY or VARBINARY type, up to 8000 characters. 6) convert the integer to the MONEY or SMALLMONEY type and process it according to the currency unit of the defined country, such as RMB, USD, and pound. 7) the BIT type conversion converts a non-zero value to 1 and is still stored as a BIT. 8) if you try to convert the data type
the day of the year,DW represents the day of the week and returns an integer default of 1 for SundayGETDATE No parametersSelect GETDATE ()Back to 2009-04-28 18:57:24.153Returns the current system date and time.DayDateSelect Day (' 2007-12-11 ') returns 11Returns an Integer that represents the part of the day of the specified date.Equivalent toDATEPART (dd, date)MonthDateSelect month (' 2007-12-11 ') return
the day of the year,DW represents the day of the week and returns an integer default of 1 for SundayGETDATE No parametersSelect GETDATE ()Back to 2009-04-28 18:57:24.153Returns the current system date and time.DayDateSelect Day (' 2007-12-11 ') returns 11Returns an Integer that represents the part of the day of the specified date.Equivalent toDATEPART (dd, date)MonthDateSelect month (' 2007-12-11 ') return
Functions in oracle are divided into character functions, number functions, date functions, empty processing functions, conversion functions, and other common
Greenwich. （ GMT) 3. Date section (specifies the part of the date to return the new value.) The following table lists the date parts and their abbreviations that are recognized by Microsoft SQL Server 2008. ） Date part Meaning Abbreviation year yy, yyyy Quarter season QQ, Q
) Convert integer value to Money or smallmoney type, processed in the currency unit of the defined country, such as RMB, USD, GBP, etc. g) A bit type conversion converts a non-0 value to 1 and is still stored as a bit type. h) attempts to convert to a different length of data type, truncates the conversion value and displays "+" after the value is converted to identify that truncation has occurred. i) Use the style option of the CONVERT () function to display the
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