{"id":25516,"date":"2024-09-21T11:38:48","date_gmt":"2024-09-21T02:38:48","guid":{"rendered":"http:\/\/www.tyosuke20xx.com\/blog\/?p=25516"},"modified":"2024-09-21T11:38:50","modified_gmt":"2024-09-21T02:38:50","slug":"mysql-null","status":"publish","type":"post","link":"http:\/\/www.tyosuke20xx.com\/blog\/?p=25516","title":{"rendered":"MySQL NULL"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>DROP TABLE IF EXISTS posts;\nCREATE TABLE posts (\n  id INT NOT NULL AUTO_INCREMENT,\n  message VARCHAR(140),\n  likes INT,\n  PRIMARY KEY (id)\n);\n\nINSERT INTO posts (message, likes) VALUES\n  ('Thanks', 12),\n  ('Arigato', 4),\n  ('Merci', NULL),\n  ('Gracias', 15),\n  ('Danke', NULL);\n\n-- SELECT * FROM posts;\n-- SELECT * FROM posts WHERE likes != 12;\n-- SELECT * FROM posts WHERE likes != 12 OR likes IS NULL;\nSELECT * FROM posts WHERE likes IS NOT NULL;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[135,4],"tags":[134,3],"class_list":["post-25516","post","type-post","status-publish","format-standard","hentry","category-mysql","category-programming","tag-mysql","tag-programming"],"aioseo_notices":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/25516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25516"}],"version-history":[{"count":1,"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/25516\/revisions"}],"predecessor-version":[{"id":25517,"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/25516\/revisions\/25517"}],"wp:attachment":[{"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25516"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.tyosuke20xx.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}