How to convert date to string in oracle-Oracle-php.cn

Home

Database

Oracle

How to convert date to string in oracle

青灯夜游

Mar 02, 2022 pm 06:36 PM

oracle

In Oracle, you can use the to_char() function to convert dates into strings. The function of this function is to convert numeric or date types into character types; the syntax is "to_char(x[,f]) ", the date type x can be formatted and converted into a string according to format f.

How to convert date to string in oracle

The operating environment of this tutorial: Windows 7 system, Oracle 11g version, Dell G3 computer.

In Oracle, you can use the to_char() function to convert dates into strings.

The function of Oracle to_char function is to convert numeric or date type into character type.

Syntax:

to_char(x[,f])

Copy after login

The date type x can be formatted and converted into a string according to format f.

Template for date/time conversion (possible values of f)

##am or a.m. or pm or p.m.Noon designation (lowercase)Y,YYYYear with comma (4 and more digits)YYYYYear (4 and more digits)##YYYYYYBC or B.C. or AD or A.D.##bc or b.c. or ad or a.d.Year identification (lowercase)MONTHFull uppercase month name (9 characters)MonthFull-length mixed-case month name (9 characters)monthFull-length lowercase month name (9 characters)MONAbbreviated month name in upper case (3 characters)MonAbbreviated month name in mixed case (3 characters)monLowercase abbreviated month name (3 characters) MMMonth (01-12) DAYFull uppercase date name (9 characters) DayFull length mixed Uppercase and lowercase date names (9 characters) dayFull-length lowercase date names (9 characters) DYAbbreviated uppercase date name (3 characters)DyAbbreviated mixed-case date name (3 characters)dyAbbreviated lowercase date name (3 characters)DDDDays of the year (001-366)DDDays in a month (01-31)DDays in a week ( 1-7; SUN=1)WThe number of weeks in a monthWeeks in a yearCentury (2 digits) Julian date (date since January 1, 4712 BC) QuarterlyRoman numeral month (I-XII; I=JAN) - capital Roman numeral month (I-XII; I= JAN) - lowercase

Template Description

HH The number of hours in a day (01-12)

HH12 The number of hours in a day (01-12)

HH24 Hours in a day (00-23)

MI Minutes (00- 59)

SS Seconds (00-59)

SSSS Seconds after midnight (0-86399)

AM or A.M. or PM or P.M. Noon mark (uppercase)

Last three digits of year

The last two people of the year

Year identification (upper case)

##WW

示例：

select to_char(sysdate,&#39;yyyy-mm-dd&#39;) from dual;

2018-11-13

Copy after login

to_char 例子

输入	输出
to_char(now(),'Day, HH12:MI:SS')	`'Tuesday , 05:39:18'`
to_char(now(),'FMDay, HH12:MI:SS')	`'Tuesday, 05:39:18'`
to_char(-0.1,'99.99')	`' -.10'`
to_char(-0.1,'FM9.99')	`'-.1'`
to_char(0.1,'0.9')	`' 0.1'`
to_char(12,'9990999.9')	`' 0012.0'`
to_char(12,'FM9990999.9')	`'0012'`
to_char(485,'999')	`' 485'`
to_char(-485,'999')	`'-485'`
to_char(485,'9 9 9')	`' 4 8 5'`
to_char(1485,'9,999')	`' 1,485'`
to_char(1485,'9G999')	`' 1 485'`
to_char(148.5,'999.999')	`' 148.500'`
to_char(148.5,'999D999')	`' 148,500'`
to_char(3148.5,'9G999D999')	`' 3 148,500'`
to_char(-485,'999S')	`'485-'`
to_char(-485,'999MI')	`'485-'`
to_char(485,'999MI')	`'485'`
to_char(485,'PL999')	`'+485'`
to_char(485,'SG999')	`'+485'`
to_char(-485,'SG999')	`'-485'`
to_char(-485,'9SG99')	`'4-85'`
to_char(-485,'999PR')	`'<485>'`
to_char(485,'L999')	`'DM 485`
to_char(485,'RN')	`' CDLXXXV'`
to_char(485,'FMRN')	`'CDLXXXV'`
to_char(5.2,'FMRN')	`V`
to_char(482,'999th')	`' 482nd'`
to_char(485, '"Good number:"999')	`'Good number: 485'`
to_char(485.8,'"Pre-decimal:"999" Post-decimal:" .999')	`'Pre-decimal: 485 Post-decimal: .800'`
to_char(12,'99V999')	`' 12000'`
to_char(12.4,'99V999')	`' 12400'`
to_char(12.45, '99V9')	`' 125'`

推荐教程：《Oracle教程》

The above is the detailed content of How to convert date to string in oracle. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Assassin's Creed Shadows: Seashell Riddle Solution

3 weeks ago By DDD

What's New in Windows 11 KB5054979 & How to Fix Update Issues

2 weeks ago By DDD

Where to find the Crane Control Keycard in Atomfall

3 weeks ago By DDD

Assassin's Creed Shadows - How To Find The Blacksmith And Unlock Weapon And Armour Customisation

1 months ago By DDD

Roblox: Dead Rails - How To Complete Every Challenge

3 weeks ago By DDD

Hot Tools

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Where is the login entrance for gmail email?

7596

CakePHP Tutorial

1386

What is the format of the account name of steam

win11 activation key permanent

nyt connections hints and answers

123

Related knowledge

How to check tablespace size of oracle Apr 11, 2025 pm 08:15 PM

To query the Oracle tablespace size, follow the following steps: Determine the tablespace name by running the query: SELECT tablespace_name FROM dba_tablespaces; Query the tablespace size by running the query: SELECT sum(bytes) AS total_size, sum(bytes_free) AS available_space, sum(bytes) - sum(bytes_free) AS used_space FROM dba_data_files WHERE tablespace_

How to view instance name of oracle Apr 11, 2025 pm 08:18 PM

There are three ways to view instance names in Oracle: use the "sqlplus" and "select instance_name from v$instance;" commands on the command line. Use the "show instance_name;" command in SQL*Plus. Check environment variables (ORACLE_SID on Linux) through the operating system's Task Manager, Oracle Enterprise Manager, or through the operating system.

How to encrypt oracle view Apr 11, 2025 pm 08:30 PM

Oracle View Encryption allows you to encrypt data in the view, thereby enhancing the security of sensitive information. The steps include: 1) creating the master encryption key (MEk); 2) creating an encrypted view, specifying the view and MEk to be encrypted; 3) authorizing users to access the encrypted view. How encrypted views work: When a user querys for an encrypted view, Oracle uses MEk to decrypt data, ensuring that only authorized users can access readable data.

How to uninstall Oracle installation failed Apr 11, 2025 pm 08:24 PM

Uninstall method for Oracle installation failure: Close Oracle service, delete Oracle program files and registry keys, uninstall Oracle environment variables, and restart the computer. If the uninstall fails, you can uninstall manually using the Oracle Universal Uninstall Tool.

How to delete all data from oracle Apr 11, 2025 pm 08:36 PM

Deleting all data in Oracle requires the following steps: 1. Establish a connection; 2. Disable foreign key constraints; 3. Delete table data; 4. Submit transactions; 5. Enable foreign key constraints (optional). Be sure to back up the database before execution to prevent data loss.

How to set up users of oracle Apr 11, 2025 pm 08:21 PM

To create a user in Oracle, follow these steps: Create a new user using the CREATE USER statement. Grant the necessary permissions using the GRANT statement. Optional: Use the RESOURCE statement to set the quota. Configure other options such as default roles and temporary tablespaces.

How to check invalid numbers of oracle Apr 11, 2025 pm 08:27 PM

Oracle Invalid numeric errors may be caused by data type mismatch, numeric overflow, data conversion errors, or data corruption. Troubleshooting steps include checking data types, detecting digital overflows, checking data conversions, checking data corruption, and exploring other possible solutions such as configuring the NLS_NUMERIC_CHARACTERS parameter and enabling data verification logging.

What to do if the oracle can't be opened Apr 11, 2025 pm 10:06 PM

Solutions to Oracle cannot be opened include: 1. Start the database service; 2. Start the listener; 3. Check port conflicts; 4. Set environment variables correctly; 5. Make sure the firewall or antivirus software does not block the connection; 6. Check whether the server is closed; 7. Use RMAN to recover corrupt files; 8. Check whether the TNS service name is correct; 9. Check network connection; 10. Reinstall Oracle software.

See all articles