INSERT INTO help_topic (help_topic_id,help_category_id,name,description,example,url) VALUES (65,10,'NOT EXISTS','Syntax:\nNOT EXISTS(query)\n\nWhether the result of a query contains no rows:\n\nURL: https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html\n\n','SELECT NOT EXISTS (SELECT * FROM t WHERE col LIKE \'c%\');\n        -> 0\n\nSELECT NOT EXISTS (SELECT * FROM t WHERE col LIKE \'d%\');\n        -> 1\n','https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html');