Is it possible to add in a DB instead of reading?

In one cell longtext in the database a large array of words, separated by commas. I want to add to the existing 1000 words, but do SELECT concatenate with new words and UPDATE is not very desirable (that would be server resources to take), because the data is not needed and drive them around in vain reluctance.
Is there anything in Mysql, PHP opportunity to implement the plans?
June 27th 19 at 15:19
1 answer
June 27th 19 at 15:21
UPDATE table SET text = CONCAT(text, 'new words') WHERE id = 1;

PS. SQL is so deeply don't know, so I can't tell how heavy is the query.

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