get date and hour from datetime sql

CONVERT (Data_type,expression[,style])CONVERT (varchar (10), field name, conversion format)DescriptionThis style is typically in the time type (Datetime,smalldatetime) and the string type (Nchar,nvarchar,char,varchar)It is only used when converting

In MySQL for the time of the storage of their own table is set when the varchar type, it feels very convenient.Yesterday took someone else to build a table to write code, found that the time type of the table is DateTime, with the feeling of a try

Common date functions SQL Server time and date function detailed, SQL Server, time, date, 1. Current system date, time Select GETDATE () 2. DateAdd returns a new datetime value on the basis of adding a period of time to the specified date For

Reproduced in this blog, the original blog: http://blog.csdn.net/baiduandxunlei/article/details/9180075CONVERT (Data_type,expression[,style])CONVERT (varchar (10), field name, conversion format)DescriptionThis style is typically in the time type

Detailed explanation of java time and date usage and query code, and detailed explanation of java date code As long as the format is correct, you can directly compare the string, and the accuracy is the same as that of seconds. String s1 = "2003-1

1. calculate the maximum number of days of calendar month. getinstance (); time. clear (); time. set (calendar. year, year); // year is inttime. set (calendar. month, I-1); // note that the default January Calendar Object is 0 int day = time.

MySQL date data type and time type usage summary MySQL date type: Date format, storage space occupied, date range comparison. Date type storage space date format date range -----------------------------------------------------------------------------

MySQL _ date function summary and mysql function Summary If it is reprinted, please indicate the source of the blog: www.cnblogs.com/xinysu/. The copyright belongs to xiaoradish in the blog garden. Thank you for your support! For MySQL date and

MySQL date type: Date Format, storage space occupied, and date range comparison.Date type storage space date format date range-----------------------------------------------------------------------------------Datetime 8 bytes YYYY-MM-DD hh: mm: SS 10

　　SQL statement gets a specific date 1. The first day of one months Select DATEADD (mm, DATEDIFF (Mm,0,getdate ()), 0) 2. Monday of this week Select DATEADD (wk, DATEDIFF (Wk,0,getdate ()), 0) 3. The first day of the year Select DATEADD (yy,