round function

OPENTLD algorithm is what to do, I do not introduce more, many people have introduced the predecessors. My reference to the blog has Discovering TLD (v)--a frog in the well Opentld C + + tries vehicle target tracking [1] Look at this is very fun, I

1.TRUNC (for dates) The date value that the Trunc function truncates for the specified element. Its specific syntax format is as follows: TRUNC (Date[,fmt]) which Date value FMT the date format, which is truncated by the specified element

--1 , Last_day function: Find the last day of the month in which the specified date is located select Last_day (to_ DATE ( " 2014-12-02 ' , "Yyyy-mm-dd ' from Span style= "font-size:16px;font-family: ' Microsoft Jas Black ', ' sans-serif '

Recently the project is very busy, the function that gives me is more complex, fortunately can cope with down. In the process of working, I found that the use of MySQL's own function can greatly reduce the complexity of the program. This is

Reproduced:To_date () with 24-hour notation and MM-minute display:One, when using Oracle's to_date function to do date conversion, many Java programmers may use the "YYYY-MM-DD HH:mm:ss" format as a format for conversion, but in Oracle will cause an

For advanced enquiries, see:http://www.w3school.com.cn/sql/Http://www.cnblogs.com/kissdodog/p/4168721.html--------------------string Function---------------------Capitalization conversion ucase (), Upper ()SELECT UCASE (ename) from EMP;SELECT UPPER (

Original address: http://www.cnblogs.com/gengaixue/archive/2012/11/21/2781037.html1.TRUNC (for dates)The date value that the Trunc function truncates for the specified element.Its specific syntax format is as follows:TRUNC (Date[,fmt])whichDate a

To_date () is one of the representative functions of Oracle database functions, and the following is a detailed description of several uses of the Oracle To_date () function,Original address: http://database.51cto.com/art/201010/231193.htmIn Oracle

Oracle character numeric date conversion  java code  24 hours is shown in the form of HH24     select to_char (sysdate, ' yyyy-mm-dd HH24:mi:ss ') from dual;     select to_date (' 2005-01-01 13:14:20 ', ' yyyy-mm-dd HH24:mi:ss ') from dual;

Database Summary Language classification Detailed description 1. Data query Statements Select 2. Data manipulation statements (DML) Insert;Update;Delete; 3. Database definition

The information society pays attention to is the work efficiency, wants unceasingly enhances the work efficiency, besides grasps the daily Office software Office 2003 The correct use, skillfully uses its each skill is also the key. 1, make Excel

General pie chart: > table (iris[,4]) 0.1 0.2 0.3 0.4 0.5 0.6 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 5 7 7 1 1 7 3 5 8 4 2/5 6 6 3 8 3 3 > Pie (Table (iris[,4])) parameter Comment: main:

Mathematical functions　　1, Calculate absolute value ABSThe ABS function calculates an absolute value (except for the bit data type) for a numeric expression result, which returns an integer.Syntax structure:ABS (numeric expression)Return value: Data

Introduction to Oracle Trunc function usageCore TIP: Introduction to Oracle Trunc function usage1.TRUNC (for dates)The date value that the Trunc function truncates for the specified element.Its specific syntax format is as follows:TRUNC

Use of the Oracle trunc () function1.TRUNC (for dates)The date value that the Trunc function truncates for the specified element.Its specific syntax format is as follows:TRUNC (Date[,fmt])whichDate a datetime valueFMT date format, which is truncated

One: Case control functionLower () function: (This function will change all uppercase letters to lowercase letters) Upper () function: (converts the input string into uppercase letters) Initcap () Function: (Capitalize the first letter

I.use of the Oracle Trunc () functionTRUNC (for dates)Precision to day Select Trunc (sysdate, ' DD ') from dual result is: 2010-9-17Accurate to Month select Trunc (sysdate, ' mm ') from dual result: 2010-9-1Accurate to Year select Trunc (sysdate, '

1.TRUNC (for dates)The date value that the Trunc function truncates for the specified element.Its specific syntax format is as follows:TRUNC (Date[,fmt])whichDate a datetime valueFMT date format, which is truncated by the specified element format.

Problem:Customer requirements, with the amount of data related to print out to retain two decimal places, such as: 13.2/13.200 to display as 13.20;Analysis:First look at the data in the database definition, all decimal (12,2), directly through the

UCASE () functionThe UCASE function converts the value of a field to uppercase.SQL UCASE () syntaxSELECT UCASE (column_name) from table_nameSQL UCASE () instanceWe have the following "Persons" table: Id LastName FirstName