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MySQL Functions

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The document discusses various built-in functions in MySQL for manipulating date, time, string, and numeric data. It describes functions for formatting dates, extracting date elements, adding or subtracting times, concatenating and modifying strings. Common functions covered include DATE_FORMAT(), NOW(), CURDATE(), CONCAT(), REPLACE(), LEFT(), RIGHT(), and MID().

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MySQL Built in Functions by Susheel Kumar Sharma
Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Date Functions ,[object Object],[object Object],Datatype Format Info DATETIME YYYY-MM-DD HH:MM:SS This stores both date and time. DATE YYYY-MM-DD This only stores the date TIMESTAMP(length) Varies TIME HH:MM:SS This stores only the time YEAR YYYY Stores only the year
Cont… ,[object Object],Timestamp Definition Format TIMESTAMP(2) YY TIMESTAMP(4) YYYY TIMESTAMP(6) YYMMDD TIMESTAMP(8) YYYYMMDD TIMESTAMP(10) YYMMDDHHMM TIMESTAMP(12) YYMMDDHHMMSS TIMESTAMP(14) YYYYMMDDHHMMSS
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
DATE_FORMAT() ,[object Object]
Cont… String Displays Example %d The numeric day of the month 01....10....17....24 etc %D The day of the month with a suffix 1st, 2nd, 3rd.... etc %m The numeric month 01....04....08....11 etc %M The Month name January....April....August etc %b The Abbreviated Month Name Jan....Apr....Aug....Nov etc %y Two digit year 98, 99, 00, 01, 02, 03 etc %Y Four digit year 1998, 2000, 2002, 2003 etc %W Weekday name Monday.... Wednesday....Friday etc %a Abbreviated Weekday name Mon....Wed....Fri etc %H Hour (24 hour clock) 07....11....16....23 etc %h Hour (12 hour clock) 07....11....04....11 etc %p AM or PM AM....PM %i Minutes 01....16....36....49 etc %s Seconds 01....16....36....49 etc
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Extraction Functions ,[object Object],Function Displays Example DAYOFMONTH(date) The numeric day of the month 01....10....17....24 etc DAYNAME(date) The Name of the day Monday.... Wednesday.... MONTH(date) The numeric month 01....04....08....11 etc MONTHNAME(date) The Month name January....April....August etc YEAR(date) Four digit year 1998, 2000, 2002, 2003 etc HOUR(time) Hour (24 hour clock) 07....11....16....23 etc MINUTE(time) Minutes 01....16....36....49 etc SECOND(time) Seconds 01....16....36....49 etc DAYOFYEAR(date) Numeric day of the year 1.....366
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Getting the Current Date and Time ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Changing Date Values ,[object Object],[object Object],[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
String Functions ,[object Object],[object Object],[object Object],[object Object],[object Object]
Adding text to an existing value ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Changing Part of a String ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Extracting Text from a String ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Finding a piece of text in a string ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Transforming Strings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Numeric Functions ,[object Object],Operator Function + Add - Subtract * Multiply / Divide Examples: mysql> SELECT 6+3; +-----+ | 6+3 | +-----+ | 9 | +-----+ 1 row in set (0.00 sec)
FLOOR() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CEILING() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ROUND() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TRUNCATE() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Aggregate Functions ,[object Object]
COUNT() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AVG() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
MIN() and MAX() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SUM() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Control Functions ,[object Object]
IF() ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CASE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IFNULL() ,[object Object],[object Object],[object Object]
Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 

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MySQL Functions

  • 1. MySQL Built in Functions by Susheel Kumar Sharma
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  • 7. Cont… String Displays Example %d The numeric day of the month 01....10....17....24 etc %D The day of the month with a suffix 1st, 2nd, 3rd.... etc %m The numeric month 01....04....08....11 etc %M The Month name January....April....August etc %b The Abbreviated Month Name Jan....Apr....Aug....Nov etc %y Two digit year 98, 99, 00, 01, 02, 03 etc %Y Four digit year 1998, 2000, 2002, 2003 etc %W Weekday name Monday.... Wednesday....Friday etc %a Abbreviated Weekday name Mon....Wed....Fri etc %H Hour (24 hour clock) 07....11....16....23 etc %h Hour (12 hour clock) 07....11....04....11 etc %p AM or PM AM....PM %i Minutes 01....16....36....49 etc %s Seconds 01....16....36....49 etc
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