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The UPPER SQL Function in MySQL and MariaDB - Conversion to uppercase

UPPERSyntax:UPPER(String)
Return value:CHAR
Synonyms:UCASE
Function type:String function
Function Description

The UPPER() function converts a "String" to uppercase, according to the current character set.

If the character set is Binary there is no conversion.

If the value of the argument is NULL, NULL is returned.

SQL Examples for the UPPER function

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select charset('Test');
SELECT upper('test');
SELECT upper('Test');
SELECT upper(CONVERT('test' USING latin1));
SELECT upper(CONVERT('Test' USING latin1));
SELECT upper(CONVERT('test' USING utf8));
SELECT upper(CONVERT('Test' USING utf8));
SELECT upper(null);

charset('Test')
varchar(64) BINARY
binary
upper('test')
varchar(4) BINARY
test
upper('Test')
varchar(4) BINARY
Test
upper(CONVERT('test' USING latin1))
varchar(4) BINARY
TEST
upper(CONVERT('Test' USING latin1))
varchar(4) BINARY
TEST
upper(CONVERT('test' USING utf8))
varchar(4) BINARY
TEST
upper(CONVERT('Test' USING utf8))
varchar(4) BINARY
TEST
upper(null)
varchar(0) BINARY
NULL
The examples were created with the MyWAY SQL manager: Download

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

In MySQL and MariaDB the UPPER() function is used to convert a string to upper case. It is a string function that takes a string value or table column name as an argument. UPPER() is useful when a string needs to be converted to uppercase for comparison, display, or other purposes, and can be used to standardize the case of strings, consistently Ensure comparison results or present data in a consistent format.
UNCOMPRESSUNHEXUNIX_TIMESTAMPUPPERUSERUTC_DATEUTC_TIME

Further MySQL und MariaDB SQL String functions

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ELTELT(Index, Strings ('str1','str2', ...))
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EXPORT_SETEXPORT_SET(Bits, On, Off [, Separator] [, Number of bits])
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EXTRACTVALUEEXTRACTVALUE(XML, XPath)

FIELDFIELD(Search string, Strings ('str1','str2', ...))
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FORMATFORMAT(Number, Decimals [, Region])
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INSERTINSERT(String, Position, Length, String to insert)
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LCASELCASE(String)
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LEFTLEFT(String, Length)
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LOAD_FILELOAD_FILE(File name)

LOWERLOWER(String)
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LPADLPAD(String, Length, String to append)
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LPAD_ORACLELPAD_ORACLE(String, Length, String to append)
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LTRIMLTRIM(String)
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MAKE_SETMAKE_SET(Bits, Strings ('str1','str2', ...))
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MIDMID(String, Position [, Length])
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QUOTEQUOTE(String)
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REPEATREPEAT(String, Number)
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REPLACEREPLACE(String, Search, Replace)
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REVERSEREVERSE(String)
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RIGHTRIGHT(String, Length)
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RPADRPAD(String, Length, String to append)
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RPAD_ORACLERPAD_ORACLE(String, Length, String to append)
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RTRIMRTRIM(String)
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SOUNDEXSOUNDEX(String)
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SPACESPACE(Number)
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SUBSTRSUBSTR(String, Position, Length)
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SUBSTRINGSUBSTRING(String, Position, Length)
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SUBSTRING_INDEXSUBSTRING_INDEX(String, Delimiter, Number)
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TRIMTRIM([Type] [, Delete character], , String)
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TRIM_ORACLETRIM_ORACLE([Type] [, Delete character], , String)
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UCASEUCASE(String)
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WEIGHT_STRINGWEIGHT_STRING(String [AS Format] [LEVEL Level] [Sorting])
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ASCIIASCII(String)
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BIT_LENGTHBIT_LENGTH(String)
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CHAR_LENGTHCHAR_LENGTH(String)
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CHARACTER_LENGTHCHARACTER_LENGTH(String)
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FIND_IN_SETFIND_IN_SET(Search string, Set of values)
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INSTRINSTR(String, Search string)
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LENGTHLENGTH(String)
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LENGTHBLENGTHB(String)
More about LENGTHB Function

LOCATELOCATE(Search string, String [, Position])
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OCTET_LENGTHOCTET_LENGTH(String)
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ORDORD(String)
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POSITIONPOSITION(Search string IN String)
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More information about the UPPER SQL function: mysql.com and mariadb.com and w3schools.com
Updated: 2023-09-24ImprintContactTerms & conditionsPrivacy & CookiesUpdatesSitemapFacebookLinkedinTwitterStatistics©2020-2024 Heino Cunze-Fischer