如何在表中组合两列的两个值。

Question

Is there any way to select data from table like below?

SELECT * FROM profile WHERE fname+" "+lname LIKE '%$name%'

For example:

fname = "Lady"
lname = "Gaga"
$name = "lady g" is match

Just like the facebook search engine, when I input a full name, it will display the result even the full name included non breaking space.

Answer 1

There sure is - you can use the mysql CONCAT() function -

SELECT * FROM profile WHERE CONCAT(fname," ",lname) LIKE '%$name%'

The CONCAT() function can take many arguments, quoted strings are taken as their literal values and field names evaluate to their value from the table being queried. So fname and lname must be the actual names of the fields in your database.

See here for some more in-depth documentation

Answer 2

是的，使用CONCAT（）函数，如下所示：

SELECT * FROM profile WHERE CONCAT(fname,' ',lname) LIKE '%$name%'

Answer 3

In MySQL, you need to use CONCAT() or CONCAT_WS() to concatenate two objects.

SELECT * FROM profile WHERE CONCAT(fname, ' ', lname) LIKE '%$name%'

OR

SELECT * FROM profile WHERE CONCAT_WS(' ', fname, lname) LIKE '%$name%'

• CONCAT
• CONCAT_WS

Answer 4

You would use the CONCAT function. Keep in mind this is likely to have poor performance as it wont use indexes correctly.

SELECT * FROM profile WHERE CONCAT(fname," ",lname) LIKE '%$name%'

Answer 5

You can use CONCAT_WS :

SELECT * FROM profile WHERE CONCAT_WS(' ', fname, lname) LIKE '%' . $name . '%'

Remembering to escape the input, of course (or to use prepared statements ).