The REPLACE SQL Function in MySQL and MariaDB - Search and replace |
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| | REPLACE | Syntax: | REPLACE(String, Search, Replace) | | Return value: | CHAR | | Function type: | String function | |
| | The REPLACE() function returns the "String" with all occurrences of the string "Search" being replaced with the string "Replace".
REPLACE() is case sensitive.
If the "String" and "Replace" arguments contain different charsets, the result is returned in the "larger" character set.
If the "Search" argument is empty, no replacement is made.
If either argument is NULL, the REPLACE() function returns NULL. | SQL Examples for the REPLACE function |
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| select replace('Test', 's', 'x');
select replace('Test', 'S', 'X');
select replace('Test', 'es', 'x');
select replace('Test', '', 'X');
select replace('Test', 's', '');
select replace(null, 'es', 'x');
select replace('Test', null, 'x');
select replace('Test', 'es', null);
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| replace('Test', 's', 'x') |
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| varchar(4) BINARY |
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| Text |
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| replace('Test', 'S', 'X') |
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| varchar(4) BINARY |
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| Test |
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| replace('Test', 'es', 'x') |
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| varchar(4) BINARY |
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| Txt |
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| replace('Test', '', 'X') |
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| varchar(4) BINARY |
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| Test |
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| replace('Test', 's', '') |
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| varchar(4) BINARY |
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| Tet |
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| replace(null, 'es', 'x') |
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| varchar(0) BINARY |
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| NULL |
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| replace('Test', null, 'x') |
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| varchar(4) BINARY |
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| NULL |
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| replace('Test', 'es', null) |
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| varchar(4) BINARY |
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| NULL |
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| Examples for the output of character sets with REPLACE() |
| select charset(replace('Test', 's', 'x'));
select charset(replace(convert('Test' using utf8), 's', 'x'));
select charset(replace('Test', 's', convert('x' using utf8)));
select charset(replace(convert('Test' using latin1), 's', 'x'));
select charset(replace(convert('Test' using latin1), 's', convert('x' using utf8)));
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| charset(replace('Test', 's', 'x')) |
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| varchar(64) BINARY |
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| binary |
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| charset(replace(convert('Test' using utf8), 's', 'x')) |
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| varchar(64) BINARY |
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| utf8 |
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| charset(replace('Test', 's', convert('x' using utf8))) |
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| varchar(64) BINARY |
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| utf8 |
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| charset(replace(convert('Test' using latin1), 's', 'x')) |
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| varchar(64) BINARY |
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| latin1 |
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| charset(replace(convert('Test' using latin1), 's', convert('x' using utf8))) |
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| varchar(64) BINARY |
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| utf8 |
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| | The examples were created with the MyWAY SQL manager: | How to use the REPLACE() function in MySQL and MariaDB databases | | In MySQL and MariaDB, the REPLACE() function is used to return all occurrences of a substring within a string to be replaced with a specified replacement string. The function is useful when you need to find and replace specific substrings within a string. The function can be used for tasks such as manipulating data, performing string transformations, or normalizing data values. | | 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 |
| | 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 REPLACE SQL function: and and |
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