MySQL - 在文本列的末尾添加单词

Question

I need to add word 'example' to the end of a text column keywords .

If the column already contains some text, added word will be separated by a space :

Column `keywords` = '';
Add word 'example'
Result `keywords` = 'example'

BUT

Column `keywords` = 'Some text'
Add word 'example'
Result `keywords` = 'Some text example'

Answer 1

UPDATE table
SET keyword=(
    CASE WHEN keyword=''
        THEN 'example'
        ELSE concat(keyword,' example')
    END
);

Answer 2

尝试

UPDATE table SET `keyword` = CONCAT_WS(' ','your text',`keyword`)

Reference

Answer 3

select concat(keyword,' example') from tbl ;

EDITED: To update,use below:

UPDATE table
SET keyword =  CASE keyword WHEN '' THEN 'example' ELSE concat(keyword,' example') END;

Answer 4

Here is another approach that some may prefer:

UPDATE `table` SET `keywords` = TRIM(CONCAT(`keywords`, ' ', 'example'))

This will not leave a leading space if the field is empty.

Answer 5

Try this:

Select CONCAT(keywords,'example') from myTable

Answer 6

try this:

UPDATE table 
   SET `keyword` = CONCAT(`keyword`, ' ', 'example')