The LOWER SQL Function in MySQL and MariaDB - Conversion to lowercase |
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| | LOWER | Syntax: | LOWER(String) | | Return value: | CHAR | | Synonyms: | LCASE | | Function type: | String function | |
| | The LOWER() function converts a "String" to lowercase, 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 LOWER function |
| select charset('Test');
SELECT lower('TEST');
SELECT lower('Test');
SELECT lower(CONVERT('TEST' USING latin1));
SELECT lower(CONVERT('Test' USING latin1));
SELECT lower(CONVERT('TEST' USING utf8));
SELECT lower(CONVERT('Test' USING utf8));
SELECT lower(null);
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| charset('Test') |
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| varchar(64) BINARY |
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| binary |
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| lower('TEST') |
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| varchar(4) BINARY |
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| TEST |
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| lower('Test') |
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| varchar(4) BINARY |
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| Test |
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| lower(CONVERT('TEST' USING latin1)) |
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| varchar(4) BINARY |
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| test |
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| lower(CONVERT('Test' USING latin1)) |
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| varchar(4) BINARY |
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| test |
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| lower(CONVERT('TEST' USING utf8)) |
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| varchar(4) BINARY |
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| test |
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| lower(CONVERT('Test' USING utf8)) |
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| varchar(4) BINARY |
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| test |
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| lower(null) |
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| varchar(0) BINARY |
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| NULL |
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| | The examples were created with the MyWAY SQL manager: | How to use the LOWER() function in MySQL and MariaDB databases | | In MySQL and MariaDB the function LOWER() is a string function that takes a character string expression as an argument and the lowercase version of it returns. It is useful when you want to standardize the case of strings to lowercase to make them consistent for comparison or display purposes. This can be very useful for case-insensitive searches or formatting of lowercase text. | | Further MySQL und MariaDB SQL String functions | | CHAR | CHAR(Character code, [, Charset]) | | More about CHAR Function |
| | CHR | CHR(Character code) | | More about CHR Function |
| | CONCAT | CONCAT(Strings ('str1','str2', ...)) | | More about CONCAT Function |
| | CONCAT_WS | CONCAT_WS(Separator, Strings ('str1','str2', ...)) | | More about CONCAT_WS Function |
| | ELT | ELT(Index, Strings ('str1','str2', ...)) | | More about ELT Function |
| | EXPORT_SET | EXPORT_SET(Bits, On, Off [, Separator] [, Number of bits]) | | More about EXPORT_SET Function |
| | EXTRACTVALUE | EXTRACTVALUE(XML, XPath) |
| | FIELD | FIELD(Search string, Strings ('str1','str2', ...)) | | More about FIELD Function |
| | FORMAT | FORMAT(Number, Decimals [, Region]) | | More about FORMAT Function |
| | INSERT | INSERT(String, Position, Length, String to insert) | | More about INSERT Function |
| | LCASE | LCASE(String) | | More about LCASE Function |
| | LEFT | LEFT(String, Length) | | More about LEFT Function |
| | LOAD_FILE | LOAD_FILE(File name) |
| | LPAD | LPAD(String, Length, String to append) | | More about LPAD Function |
| | LPAD_ORACLE | LPAD_ORACLE(String, Length, String to append) | | More about LPAD_ORACLE Function |
| | LTRIM | LTRIM(String) | | More about LTRIM Function |
| | MAKE_SET | MAKE_SET(Bits, Strings ('str1','str2', ...)) | | More about MAKE_SET Function |
| | MID | MID(String, Position [, Length]) | | More about MID Function |
| | QUOTE | QUOTE(String) | | More about QUOTE Function |
| | REPEAT | REPEAT(String, Number) | | More about REPEAT Function |
| | REPLACE | REPLACE(String, Search, Replace) | | More about REPLACE Function |
| | REVERSE | REVERSE(String) | | More about REVERSE Function |
| | RIGHT | RIGHT(String, Length) | | More about RIGHT Function |
| | RPAD | RPAD(String, Length, String to append) | | More about RPAD Function |
| | RPAD_ORACLE | RPAD_ORACLE(String, Length, String to append) | | More about RPAD_ORACLE Function |
| | RTRIM | RTRIM(String) | | More about RTRIM Function |
| | SOUNDEX | SOUNDEX(String) | | More about SOUNDEX Function |
| | SPACE | SPACE(Number) | | More about SPACE Function |
| | SUBSTR | SUBSTR(String, Position, Length) | | More about SUBSTR Function |
| | SUBSTRING | SUBSTRING(String, Position, Length) | | More about SUBSTRING Function |
| | SUBSTRING_INDEX | SUBSTRING_INDEX(String, Delimiter, Number) | | More about SUBSTRING_INDEX Function |
| | TRIM | TRIM([Type] [, Delete character], , String) | | More about TRIM Function |
| | TRIM_ORACLE | TRIM_ORACLE([Type] [, Delete character], , String) | | More about TRIM_ORACLE Function |
| | UCASE | UCASE(String) | | More about UCASE Function |
| | UPPER | UPPER(String) | | More about UPPER Function |
| | WEIGHT_STRING | WEIGHT_STRING(String [AS Format] [LEVEL Level] [Sorting]) | | More about WEIGHT_STRING Function |
| | ASCII | ASCII(String) | | More about ASCII Function |
| | BIT_LENGTH | BIT_LENGTH(String) | | More about BIT_LENGTH Function |
| | CHAR_LENGTH | CHAR_LENGTH(String) | | More about CHAR_LENGTH Function |
| | CHARACTER_LENGTH | CHARACTER_LENGTH(String) | | More about CHARACTER_LENGTH Function |
| | FIND_IN_SET | FIND_IN_SET(Search string, Set of values) | | More about FIND_IN_SET Function |
| | INSTR | INSTR(String, Search string) | | More about INSTR Function |
| | LENGTH | LENGTH(String) | | More about LENGTH Function |
| | LENGTHB | LENGTHB(String) | | More about LENGTHB Function |
| | LOCATE | LOCATE(Search string, String [, Position]) | | More about LOCATE Function |
| | OCTET_LENGTH | OCTET_LENGTH(String) | | More about OCTET_LENGTH Function |
| | ORD | ORD(String) | | More about ORD Function |
| | POSITION | POSITION(Search string IN String) | | More about POSITION Function |
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| | | More information about the LOWER SQL function: and and |
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