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Other String Functions
======================
.. _coercibility-function:
COERCIBILITY
------------
Gets coercibility for an expression.
.. _elt-function:
ELT
---
Return string at index number.
.. _export-set-function:
EXPORT_SET
----------
Return a string
.. _format-function:
FORMAT
------
Return a number formatted to specified number of decimal places.
.. _load-file-function:
LOAD_FILE
---------
Load the named file.
.. _lpad-function:
LPAD
----
Return the string argument, left-padded with the specified string.
.. _make-set-function:
MAKE_SET
--------
Return a set of comma-separated strings that have the corresponding bit in bits set.
.. _match-function:
MATCH
-----
Perform full-text search.
.. _mid-function:
MID
---
Return a substring starting from the specified position.
.. _quote-function:
QUOTE
-----
Escape the argument for use in an SQL statement.
.. _repeat-function:
REPEAT
------
Repeat a string the specified number of times.
.. _replace-function:
REPLACE
-------
The REPLACE() function returns a string with all occurrences of the 'from_str' replaced by 'to_str'. REPLACE is case-sensitive when searching for 'from_str'.
Syntax:
REPLACE(str,from_str,to_str)
For example:
.. code-block:: mysql
SELECT REPLACE('wwww.google.com', 'w', 'v');
Returns: vvv.google.com
.. _reverse-function:
REVERSE
-------
This function returns a string argument with the characters in reverse order.
.. code-block:: mysql
SELECT REVERSE('abcd');
Returns: dcba
.. _right-function:
RIGHT
-----
Return the specified rightmost number of characters
.. _rpad-function:
RPAD
----
Append string the specified number of times
.. _soundex-function:
SOUNDEX
-------
Return a soundex string
.. _substr-function:
SUBSTR
------
Synonym for SUBSTRING().
.. _substring-function:
SUBSTRING
---------
Returns the substring as specified
Examples that use SUBSTRING() in the SELECT clause:
The SUBSTRING() function is used to extract a character string (using a given starting position and a given length).
.. code-block:: mysql
SELECT
SUBSTRING(course_designater,6,3) as 'Course number'
FROM Courses
WHERE course_designater LIKE 'Excel%'
LIMIT 10;
You can also format a column using SUBSTRING() in combination with functions like LOWER() and UPPER().
.. code-block:: mysql
SELECT
CONCAT(UPPER(SUBSTRING(lastname,1,1)),
LOWER(SUBSTRING(lastname,2,29)))
FROM Students
LIMIT 10;
.. _substring-index-function:
SUBSTRING_INDEX
---------------
Return a substring from a string before the specified number of occurrences of the delimiter.
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