Source: http://stackoverflow.com/questions/2696884/split-value-from-one-field-to-two
Unfortunately MySQL does not feature a split string function. However you can create a user defined function for this, such as the one described in the following article:
- MySQL Split String Function by Federico Cargnelutti
With that function, you would be able to build your query as follows:
SELECT SPLIT_STR(membername, ' ', 1) as memberfirst,
SPLIT_STR(membername, ' ', 2) as memberlast
FROM users;If you prefer not to use a user defined function and you do not mind the query to be a bit more verbose, you can also do the following:
SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(membername, ' ', 1), ' ', -1) as memberfirst,
SUBSTRING_INDEX(SUBSTRING_INDEX(membername, ' ', 2), ' ', -1) as memberlast
FROM users;
In case you don’t want to use a function, this query handles things cleaner than the other answers:
SELECT IF(
LOCATE(' ', `membername`) > 0,
SUBSTRING(`membername`, 1, LOCATE(' ', `membername`) - 1),
`membername`
) AS memberfirst,
IF(
LOCATE(' ', `membername`) > 0,
SUBSTRING(`membername`, LOCATE(' ', `membername`) + 1),
NULL
) AS memberlast
FROM `user`;Compared to other answers this approach takes care of:
- membername values without a space: it will add the whole string to memberfirst and sets memberlast to NULL.
- membername values that have multiple spaces: it will add everything before the first space to memberfirst and the remainder (including additional spaces) to memberlast.
The UPDATE version would be:
UPDATE `user` SET
`memberfirst` = IF(
LOCATE(' ', `membername`) > 0,
SUBSTRING(`membername`, 1, LOCATE(' ', `membername`) - 1),
`membername`
),
`memberlast` = IF(
LOCATE(' ', `membername`) > 0,
SUBSTRING(`membername`, LOCATE(' ', `membername`) + 1),
NULL
);