mysql trunc date

Oracle and Mysql time formatting 1. Oracle formatting time: Oracle obtains the current date and Date Format Get system date: SYSDATE () format Date: TO_CHAR (SYSDATE (), 'yy/MM/DD HH24: MI: SS) or TO_DATE (SYSDATE (), 'yy/MM/DD HH24: MI: SS) format

Common oracle knowledge accumulation and oracle knowledge accumulation1. Basic operation 1. Table operation 1.1 copy and create a table Create table test as select * from dept; -- copy data and structure from a known table Create table test as

　 Oracle Mysql Compare versions Release 10.2.0.1.0 XE windowsxp 5.0.45-community-nt-log MySQL Community Edition (GPL) As a calculator Sql> Select from dual; Mysql> Select; Mysql>

1, Concatconcat (string 1, String 2, String 3, ...): string 1, String 2, String 3, and so on concatenated together.For example:Geography formRegion_name Store_nameEast BostonEast New YorkWest Los AngelesWest San DiegoExample 1:Mysql/oracle:SELECT

--trunc (Date,[fmt])/trunc (Number[,decimals])SELECT sysdate from dual;SELECT TRUNC (sysdate) from dualSELECT TRUNC (12.34524,2) from dual; --12.34SELECT TRUNC ( -12.34724,2) from dual; --12.34SELECT TRUNC (12.34524,-1) from dual; --10--Returns the

Comparison between MySQL and Oracle: Function 3: mysqloracle Function No. Category ORACLE MYSQL Note 1 Numeric Functions Round (1.23456, 4) Round (1.23456, 4) Same:ORACLE: select round (1.23456

Oracle:1. Get the current date of the year, month, day, time, minute, secondSelectTo_char (Sysdate,'yyyy') asNowyear fromDual//get the year of the time 　　 SelectTo_char (Sysdate,'mm') asNowmonth fromDual//get the month of the time 　　 SelectTo_char

i) Oracle Overview (1) Understand some concepts about the databaseData: In the database field, data is the basic unit of storage, including text, pictures, video, audioDatabase: The Data Warehouse, the place where the data is stored, especially the

This paper is a fast and precise grasp of the SELECT statement in MySQL database. The basic syntax for a SELECT statement in MySQL is: The following is a reference fragment:SELECT [Straight_join] [Sql_small_result][Sql_big_result]

 MySQL date and time format conversion Linux SCP Usage Detailedoracle/mysql/sqlserver Function Differences2011-07-01 12:34:36|  Category: MySQL technology | Tags:mysql sqlsever oracle functions | Report | Font size Big medium small subscription