ADDDATE(date,INTERVAL expression type)
by Tony Butcher
Sams Teach Yourself MySQL in 21 Days, Second Edition
- Copyright
- About the Author
- Acknowledgments
- We Want to Hear from You!
- Introduction
- At a Glance
- At a Glance
- Querying Data
- Joins and Indexes
- Operators and Functions in MySQL
- Using PHP
- Using the Perl DBI
- Using the C API
- C and MySQL
- When to Use C, and When Not To
- Datatypes
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- Summary
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- At a Glance
- Appendices
- Data Type Reference
- SQL Reference
- ALTER [IGNORE] TABLE table_name action_list
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- ABS(x)
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- ADDDATE(date,INTERVAL expression type)
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- DATE_ADD(date,INTERVAL expression type)
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- MAX(expression)
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- MINUTE(time)
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- MONTH()
- MONTHNAME()
- NOT IN
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- SUBDATE(date,INTERVAL expression type)
- SUBSTRING(string,delimiter,count)
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- WEEK(date[,first])
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- YEARWEEK(date[,first])
- The PHP API
- mysql_affected_rows([link_identifier])
- mysql_close([link_identifier])
- mysql_connect([server[,username[,password[,new_link]]]])
- mysql_create_db(database_name[,link_identifier])
- mysql_data_seek(result,row_number)
- mysql_db_name(result,offset[,field])
- mysql_db_query(database_name,query[,link_identifier][,result mode])
- mysql_drop_db(database_name[,link_identifier])
- mysql_errno([link_identifier])
- mysql_error([link_identifier])
- mysql_escape_string(raw_string)
- mysql_fetch_array(result)
- mysql_fetch_assoc(result)
- mysql_fetch_field(result,[offset])
- mysql_fetch_lengths(result)
- mysql_fetch_object(result)
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- mysql_field_flags(result,offset)
- mysql_field_len(result,offset)
- mysql_field_name(result,offset)
- mysql_field_seek(result,offset)
- mysql_field_table(result,offset)
- mysql_field_type(result,offset)
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- mysql_get_server_info([link_identifier])
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- mysql_list_dbs([link_identifier])
- mysql_list_fields(database_name,table_name[,link_identifier])
- mysql_list_tables(database_name,[,link_identifier])
- mysql_num_fields(result)
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- mysql_pconnect([server[,username[,password]]])
- mysql_query(query[,link_identifier][,result_mode])
- mysql_real_escape_string(raw_string[,link_identifier])
- mysql_result(result,row_offset[,field])
- mysql_select_db(database_name[,link_identifier])
- mysql_tablename(result,offset)
- mysql_unbuffered_query(query[,link_identifier][,result_mode])
- Index
ADDDATE(date,INTERVAL expression type)
Description: Returns the date that results from adding an interval expression to date (a DATE or DATETIME type), where the interval is of type as shown in Table C.1.
If date is of type DATE and type contains only year, month, and day calculations, a date will result; if date is of type DATETIME or type includes hour, minute, or second calculations, a date and time will result.
ADDDATE() is synonymous with DATE_ADD() and +.
| Value of type | Format for expression |
|---|---|
| SECOND | ss |
| MINUTE | mm |
| HOUR | hh |
| DAY | DD |
| MONTH | MM |
| YEAR | YY |
| MINUTE_SECOND | "mm:ss" |
| HOUR_MINUTE | "hh:mm:ss" |
| DAY_HOUR | "DD hh" |
| YEAR_MONTH | "YY-MM" |
| HOUR_SECOND | "hh:mm:ss" |
| DAY_MINUTE | "DD hh:mm" |
| DAY_SECOND | "DD hh:mm:ss" |
Examples:
ADDDATE('2002-01-05',INTERVAL 3 DAY) returns 2002-01-08.
ADDDATE('2002-01-05 12:00:00',INTERVAL 3 DAY) returns 2002-01-08 12:00:00.
ADDDATE('00-02-07 09:00:00',INTERVAL 36 HOUR) returns 2000-02-08 21:00:00.
ADDDATE('1964-12-01',INTERVAL "37 6" YEAR_MONTH) returns 2002-06-01.
See also: DATE_ADD(), SUBDATE()
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