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The WEEKOFYEAR SQL Function in MySQL and MariaDB - Calendar week from date

WEEKOFYEARSyntax:WEEKOFYEAR(Date)
Return value:INTEGER
Function type:Date and Time function
Function Description

The WEEKOFYEAR() function returns the calendar week of "Date" in the range 1 to 53.

The "Date" argument must be of type DATE or DATETIME.

If the value for "Date" is invalid or NULL, the WEEKOFYEAR() function returns NULL.


The WEEKOFYEAR() function returns the same value as WEEK("Date", 3) .

SQL Examples for the WEEKOFYEAR function

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SELECT weekofyear(now());
SELECT weekofyear(adddate(now(), interval 1 week));
SELECT weekofyear(utc_timestamp());
SELECT weekofyear('2023-03-29');
SELECT weekofyear('2023-03-29 12:15:30');
SELECT weekofyear(20230216);
SELECT weekofyear(20230216121530);

SELECT weekofyear('2023-00-00');
SELECT weekofyear(unix_timestamp());
SELECT weekofyear('xxx');
SELECT weekofyear(null);

weekofyear(now())
int(2)
14
weekofyear(adddate(now(), interval 1 week))
int(2)
15
weekofyear(utc_timestamp())
int(2)
14
weekofyear('2023-03-29')
int(2)
13
weekofyear('2023-03-29 12:15:30')
int(2)
13
weekofyear(20230216)
int(2)
7
weekofyear(20230216121530)
int(2)
7
weekofyear('2023-00-00')
int(2)
NULL
weekofyear(unix_timestamp())
int(2)
NULL
weekofyear('xxx')
int(2)
NULL
weekofyear(null)
int(2)
NULL
The examples were created with the MyWAY SQL manager: Download

How to use the WEEKOFYEAR() function in MySQL and MariaDB databases

In both MySQL and MariaDB the WEEKOFYEAR() function returns the calendar week from a specific "Date" or "Date and Time" expression as an integer value from 0 to 53. Column names of tables or other expressions can also be used as parameters to be able to retrieve or edit the calendar week of a date or to work with specific calendar weeks in SQL queries, SQL scripts or other date-based operations in the database, for example to sort, sum up or group query results according to calendar weeks.
VERSIONWEEKWEEKDAYWEEKOFYEARWEIGHT_STRINGYEARYEARWEEK

Further MySQL und MariaDB SQL Date and Time functions

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ADDTIMEADDTIME(Date, Expression)
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CONVERT_TZCONVERT_TZ(Date, From time zone, To time zone)
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CURDATECURDATE()
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CURTIMECURTIME([Precision])
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CURRENT_DATECURRENT_DATE(-)
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CURRENT_TIMECURRENT_TIME([Precision])
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CURRENT_TIMESTAMPCURRENT_TIMESTAMP([Precision])
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DATEDATE(Date and Time)
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DATE_ADDDATE_ADD(Date, INTERVAL Number Unit)
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DATE_SUBDATE_SUB(Date, INTERVAL Number Unit)
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FROM_DAYSFROM_DAYS(Number of days)
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FROM_UNIXTIMEFROM_UNIXTIME(Unix timestamp [, Format])
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LOCALTIMELOCALTIME([Precision])
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LOCALTIMESTAMPLOCALTIMESTAMP([Precision])
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MAKEDATEMAKEDATE(Year, Day of year)
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MAKETIMEMAKETIME(Hours, Minutes, Seconds)
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NOWNOW([Precision])
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SEC_TO_TIMESEC_TO_TIME(Seconds)
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SLEEPSLEEP(Seconds)
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STR_TO_DATESTR_TO_DATE(String, Format)
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SUBDATESUBDATE(Date, [INTERVAL] Number [Unit])
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SUBTIMESUBTIME(Date and Time, Deduction)
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SYSDATESYSDATE()
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TIMETIME(Date and Time)
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TIMEDIFFTIMEDIFF(Date 1, Date 2)
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TIMESTAMPTIMESTAMP(Date [, Addition])
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TIMESTAMPADDTIMESTAMPADD(Unit, Number, Date)
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TIMESTAMPDIFFTIMESTAMPDIFF(Unit, Date 1, Date 2)
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UTC_DATEUTC_DATE()
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UTC_TIMEUTC_TIME([Precision])
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UTC_TIMESTAMPUTC_TIMESTAMP([Precision])
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DAYDAY(Date)
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DAYOFMONTHDAYOFMONTH(Date)
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DAYOFWEEKDAYOFWEEK(Date)
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DAYOFYEARDAYOFYEAR(Date)
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EXTRACTEXTRACT(Unit FROM Date)
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HOURHOUR(Date and Time)
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MICROSECONDMICROSECOND(Date and Time)
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MINUTEMINUTE(Date and Time)
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MONTHMONTH(Date)
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QUARTERQUARTER(Date)
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SECONDSECOND(Date and Time)
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TIME_TO_SECTIME_TO_SEC(Time)
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TO_DAYSTO_DAYS(Date)
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TO_SECONDSTO_SECONDS(Date and Time)
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UNIX_TIMESTAMPUNIX_TIMESTAMP([Date and Time])
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WEEKWEEK(Date [, Mode])
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WEEKDAYWEEKDAY(Date)
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YEARYEAR(Date)
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YEARWEEKYEARWEEK(Date [, Mode])
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DAYNAMEDAYNAME(Date)
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DATE_FORMATDATE_FORMAT(Date and Time, Format)
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MONTHNAMEMONTHNAME(Date)
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TIME_FORMATTIME_FORMAT(Time, Format)
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Numeric functionsString functionsRegular ExpressionsDate and Time functions
Comparison functionsEncryption & CompressionConversion functionsNULL functions
Aggregate functionsWindow functionsJSON functionsGeometric functions
Sequence functionsInformation functionsDynamic ColumnsMiscellaneous functions
More information about the WEEKOFYEAR SQL function: mysql.com and mariadb.com and w3schools.com
Updated: 2023-09-17ImprintContactTerms & conditionsPrivacy & CookiesUpdatesSitemapFacebookLinkedinTwitterStatistics©2020-2024 Heino Cunze-Fischer