INSERT INTO news_data (title, content, publish_time, related_commodity, sentiment, create_time, source) VALUES (#{title}, #{content}, #{publishTime}, #{relatedCommodity}, #{sentiment}, CURRENT_TIMESTAMP, #{source}) INSERT INTO news_data (title, content, publish_time, related_commodity, sentiment, create_time, source) VALUES (#{item.title}, #{item.content}, #{item.publishTime}, #{item.relatedCommodity}, #{item.sentiment}, CURRENT_TIMESTAMP, #{item.source}) SELECT * FROM news_data ORDER BY publish_time DESC SELECT * FROM news_data WHERE related_commodity = #{commodity} ORDER BY publish_time DESC SELECT * FROM news_data WHERE publish_time BETWEEN #{startDate} AND #{endDate} ORDER BY publish_time DESC SELECT * FROM news_data WHERE title = #{title} AND publish_time = #{publishTime} SELECT COUNT(*) FROM news_data WHERE sentiment = #{sentiment} DELETE FROM news_data