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MYSQL

SUBSTRING_INDEX()


Description

The SUBSTRING_INDEX( ) function returns a substring from the string str before the count occurrence of delim (delimiter). It returns the leftmost part of the delimiter, if the count is positive. It returns the rightmost part of the delimiter, if the count is negative.

This function has the form:

SELECT SUBSTRING_INDEX(str, delim, count)
Parameter Description
str String
delim Delimiter
count Count

Return Value

The substring from the string str before the count occurrence of delim (delimiter). It returns the leftmost part of the delimiter, if the count is positive. It returns the rightmost part of the delimiter, if the count is negative.

Examples

The following example shows the basic use of this function:

mysql> SELECT SUBSTRING_INDEX('www.mysql.com', '.', 2);
-> 'www.mysql'
mysql> SELECT SUBSTRING_INDEX('www.mysql.com', '.', -2);
-> 'mysql.com'


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