The CHAR_LENGTH SQL Function in MySQL and MariaDB - Length of string in characters |
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| | CHAR_LENGTH | Syntax: | CHAR_LENGTH(String) | | Return value: | INTEGER | | Synonyms: | CHARACTER_LENGTH | | Function type: | String function | |
| | The CHAR_LENGTH() function returns the length of "String" in number of characters.
If the "String" contains characters with more than one byte, the return value does not increase, in contrast to the LENGTH() function.
To get the length of a "String" in number of bytes the LENGTH() function should be used.
If the character set of the argument is Binary the function returns the number of bytes needed.
Numeric arguments are converted to strings.
If the value of the argument is NULL, the CHAR_LENGTH() function returns NULL. | SQL Examples for the CHAR_LENGTH function |
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| select charset('äöü');
select char_length('Test');
select char_length('äöü');
select char_length(convert('äöü' using utf8));
select length(convert('äöü' using utf8));
select char_length(1.3456);
select char_length(20);
select char_length(true);
select char_length(false);
select char_length(null);
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| charset('äöü') |
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| varchar(64) BINARY |
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| binary |
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| char_length('Test') |
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| int(10) |
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| 4 |
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| char_length('äöü') |
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| int(10) |
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| 6 |
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| char_length(convert('äöü' using utf8)) |
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| int(10) |
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| 3 |
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| length(convert('äöü' using utf8)) |
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| int(10) |
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| 6 |
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| char_length(1.3456) |
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| int(10) |
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| 6 |
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| char_length(20) |
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| int(10) |
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| 2 |
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| char_length(true) |
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| int(10) |
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| 1 |
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| char_length(false) |
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| int(10) |
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| 1 |
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| char_length(null) |
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| int(10) |
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| NULL |
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| | The examples were created with the MyWAY SQL manager: | How to use the CHAR_LENGTH() function in MySQL and MariaDB databases | | In MySQL and MariaDB, the CHAR_LENGTH() function can be used to return the number of characters in a given string. The function counts the number of characters, regardless of the character set used, and is useful when the number of characters in a string needs to be determined, for example to check input length, count characters for analysis, or perform string manipulations based on the number of characters. | | 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) |
| | LOWER | LOWER(String) | | More about LOWER Function |
| | 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 |
| | 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 CHAR_LENGTH SQL function: and and |
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