Solution to the problem when the date type is poured into hive when the Oracle database is present1. Description of the problem:Using Sqoop to pour the Oracle data table into hive, the date data in Oracle will be truncated in seconds, leaving only ' yyyy-mm-dd ' instead of '
Conversion between different data typesIn the value assignment statement, the data type is implicitly converted, and the implicit conversion should be avoided as much as possible, because the written SQL statements are hard to understand and are hard to understand over time.Especially when embedded in large programs, Oracle upgrades will modify implicit
Several Methods for conversion between mysql and oracle I. Methods for conversion between mysql dates and characters date_format (date, % Y-% m-% d) ------------ to_char () in oracle (); str_to_date (date, % Y-% m-% d) -----------
Tags: oracle function single-line function conversion function conditional expression650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/8C/27/wKioL1hjtGywsFtaAABh8bZO-Vc257.png-wh_500x0-wm_3 -wmp_4-s_59910427.png "title=" 1.png "alt=" Wkiol1hjtgywsftaaabh8bzo-vc257.png-wh_50 "/>Single-line function============================================================Characteristics:Each row returns one result
Label:1. Get system time, current time Select sysdate from dual 2. Date function When using date calculations in SQL statements, you must use a Date function to convert the string to a date type, unlike using a string directly in SQL Server. to_date ("string", "converted format") To_char (
In Oracle, The TO_DATE format and other date functions are in the TO_DATE format (take the time: 13:45:25 as an example) Year: yy two digits two-Year display value: 07 yyy three digits three-Year display value: 007 yyyy four digits four-digit year display value: 2007 Month: mm number two-digit Month display value: 11 mon abbreviated character set display value: November, if it is English version, show nov m
Implementation of time conversion in Oracle in several languages
Implementation of time conversion in Oracle in several languages
Conversion of date and time in c shell perl php: seconds and human readable
Author: The source of Xiaoxiang: http://www.cnblogs.com/kerrycode/
------------------------------------------type conversion function------------------------------------------------Automatic type conversion, ORACLE can automatically according to the specific situation of the following conversion:* String to Numeric* S
This article mainly introduces the actual operations related to Oracle data type conversion to_char (date). If you are interested in the actual application solution of Oracle data type conversion, you can click the following article to learn more about it.
1.
In oracle in English, the default date format is 'dd-MON-YY ',
For example, '01-Jan-98'
In the Chinese version of the Chinese version, the default Oracle date format is 'day-month-Year', for example, '21-January-2003-'or '21-January-03'
2.Convert string to date
Oracle Date Time Function encyclopedia
To_date format (in time: 2007-11-02 13:45:25 for example)
Year:
YY two digits two-digit year display value: 07
YYY three digits three-digit year display value: 007
YYYY four digits four-digit year display value: 2007
Month:
MM number two-bit month display value: 11
Mon abbreviated Character Set display value: November, if the English version, display Nov
Month
Read Catalogue
Objective
string and date/time reciprocal conversion function
Date/Time calculation function
ObjectiveThe date/time of this article is all formatted as "2016-01-01 01:01:01"; monitor_time is the database table field;string and date/time M
order and format of year, month, day, time and division can be arranged arbitrarily.
Insert intodata_his20070710 (Tagindex,tagval,tagtime) VALUES (' 10lbd10ft001 ', 12.082,to_date (' 2004-01-0522:09:38 ', ' Yyyy-mm-dd Hh24-mi-ss '))
Some of the processing dates in Oracle
Converts a number to any time format. such as seconds: need to convert to day/hour
SELECT To_char (Floor (TRUNC (936000/60*60)/24)) | | Day ' | | To_char (mod (TRUNC (936000/60*6
.
Simpledateformat formatt = new simpledateformat ("yyyy-mm-dd ");Date = new date ();System. Out. println (formatt. Format (date ));
The printed format is:
Simpledateformat formatt = new simpledateformat ("yyyy-Mmmm-dd ");Date = new date ();System. Out. println (formatt. For
Tags: SDA col date format conversion logs operation convert AST date class OneIn Oracle, methods are not as numerous as SQL Server A conversion methodTo_date (): function converts a character type to a date type by a certain forma
There are two types of data type conversions for Oracle: Implicit conversions and explicit conversions. Try to use explicit conversions when you use them.Implicit conversions are typically Varchar2 or char conversions to number and date, or vice versa. Example,hir_date> ' 1-jan-2014 ' string is implicitly converted to the date type, and select ' 53.5 ' +23 from d
Oracle date and time processing function Summary In to_date format
Day:
Dd number 12
Dy abbreviated Fri
Day spelled out Friday
Ddspth spelled out, ordinal twelfth
Month:
MM number 03
Mon abbreviated MAR
Month spelled out March
Year:
YY two digits 98
Yyyy four digits 1998
The time range in the 24-hour format is: 0:00:00-23:59:59 ....The time range in the 12-hour format is: 1:00:00-12:59:59 ....
1.
Tags: image resolution Bubuko brackets using min ima nbsp spanDue to business needs, these two days in learning Oracle, found in Oracle's date it will give you into a very unaccustomed format, so think about how to get it into adulthood, month, day format to display, check information, look at the document, finally found a solution, in fact, the use of the To_char method. For example, in
There are many functions about dates in Oracle, such as:
1,add_months () is used to increase or decrease the number of months from a date value
Date_value:=add_months (date_value,number_of_months)
Cases:
Sql> Select Add_months (sysdate,12) "Next year" from dual;
Next year
----------
1 March-November-04
Sql> Select Add_months (sysdate,112) "Last year" from dual;
Last year
----------
1 March-March-1
The following summarizes the MySQL conversion Oracle several points of attention, I hope to help.
1. Automatic growth of data type processing
MySQL has an automatically growing data type, and the data value is automatically obtained when you insert a record without manipulating this field. Oracle does not have an automatically growing data type, an automatic g
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.