select * from t_article where article_channel = '智库动态' and tagname = '4G+,人工智能';
以上是未按","分开时的查询
SELECT
article_id,
article_channel,
article_content,
article_title,
REGEXP_SUBSTR (tagname, '[^,]+', 1, lv) tagname
FROM
t_article,
(
SELECT
LEVEL lv
FROM
dual CONNECT BY LEVEL < 4
) b
WHERE
b.lv <= REGEXP_COUNT (t_article.tagname, '\,') + 1 and article_channel = '智库动态' and tagname = '4G+,人工智能'
ORDER BY
article_id;
以上是按","分开后的查询