{"id":2683,"date":"2010-07-01T12:41:18","date_gmt":"2010-07-01T12:41:18","guid":{"rendered":"http:\/\/atbliss.ru\/?p=2683"},"modified":"2017-08-11T19:43:29","modified_gmt":"2017-08-11T17:43:29","slug":"count-records-mysql","status":"publish","type":"post","link":"https:\/\/atbliss.ru\/count-records-mysql\/","title":{"rendered":"\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u043c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 MySQL: \u043f\u0440\u0438\u043c\u0435\u0440 \u043a\u043e\u0434\u0430"},"content":{"rendered":"<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435<\/p><ul class=\"toc_list\"><li><a href=\"#COUNT\">\u0424\u0443\u043d\u043a\u0446\u0438\u044f\u00a0COUNT()<\/a><\/li><li><a href=\"#i\">\u041a\u0430\u043a \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0438 \u0432\u044b\u0432\u0435\u0441\u0442\u0438 \u043d\u0430 \u044d\u043a\u0440\u0430\u043d<\/a><\/li><li><a href=\"#_COUNT\">\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 COUNT() \u043d\u0430 \u043f\u0440\u0438\u043c\u0435\u0440\u0435<\/a><\/li><li><a href=\"#i-2\">\u0420\u0435\u0437\u044e\u043c\u0435<\/a><\/li><\/ul><\/div>\n<h2><span id=\"COUNT\">\u0424\u0443\u043d\u043a\u0446\u0438\u044f\u00a0COUNT()<\/span><\/h2>\n<p>\u0424\u0443\u043d\u043a\u0446\u0438\u044f\u00a0<code>COUNT()<\/code> \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435, \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0437\u0430\u0434\u0430\u043d\u043d\u043e\u043c\u0443 \u043a\u0440\u0438\u0442\u0435\u0440\u0438\u044e.<\/p>\n<p>\u0424\u0443\u043d\u043a\u0446\u0438\u044f <code>COUNT(expr)<\/code> \u0432\u0441\u0435\u0433\u0434\u0430 \u0441\u0447\u0438\u0442\u0430\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0435 \u0441\u0442\u0440\u043e\u043a\u0438, \u0443 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f <code>expr<\/code> \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f <code>NOT NULL<\/code>.<\/p>\n<p>\u0418\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u0438\u0437 \u044d\u0442\u043e\u0433\u043e \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 <code>COUNT()<\/code> \u0441\u043e \u0437\u0432\u0435\u0437\u0434\u043e\u0447\u043a\u043e\u0439 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u0430 \u2014 <code>COUNT(*)<\/code>. \u0412 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0441\u0447\u0438\u0442\u0430\u044e\u0442\u0441\u044f \u0432\u0441\u0435 \u0441\u0442\u0440\u043e\u043a\u0438, \u0432\u043d\u0435 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0442\u043e\u0433\u043e, <code>NULL<\/code> \u043e\u043d\u0438 \u0438\u043b\u0438 <code>NOT NULL<\/code>.<\/p>\n<p>\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0444\u0443\u043d\u043a\u0446\u0438\u044f <code>COUNT(*)<\/code> \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043e\u0431\u0449\u0435\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435:<\/p>\n<pre>SELECT COUNT(*) FROM table_name<\/pre>\n<h2><span id=\"i\">\u041a\u0430\u043a \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0438 \u0432\u044b\u0432\u0435\u0441\u0442\u0438 \u043d\u0430 \u044d\u043a\u0440\u0430\u043d<\/span><\/h2>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 PHP+MySQL-\u043a\u043e\u0434\u0430 \u0434\u043b\u044f \u043f\u043e\u0434\u0441\u0447\u0435\u0442\u0430 \u0438 \u0432\u044b\u0432\u043e\u0434\u0430 \u043e\u0431\u0449\u0435\u0433\u043e \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u0441\u0442\u0440\u043e\u043a:<\/p>\n<pre>&lt;?php&gt;\r\n$res = mysql_query(\"SELECT COUNT(*) FROM table_name\")\r\n$row = mysql_fetch_row($res);\r\n$total = $row[0]; \/\/ \u0432\u0441\u0435\u0433\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439\r\necho $total;\r\n?&gt;<\/pre>\n<p>\u042d\u0442\u043e\u0442 \u043f\u0440\u0438\u043c\u0435\u0440 \u0438\u043b\u043b\u044e\u0441\u0442\u0440\u0438\u0440\u0443\u0435\u0442 \u0441\u0430\u043c\u044b\u0439 \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u0438\u00a0<code>COUNT()<\/code>. \u041d\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u044d\u0442\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043c\u043e\u0436\u043d\u043e \u0432\u044b\u043f\u043b\u043d\u044f\u0442\u044c \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u0437\u0430\u0434\u0430\u0447\u0438.<\/p>\n<p>\u0423\u043a\u0430\u0437\u0430\u0432 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0439 \u0441\u0442\u043e\u043b\u0431\u0435\u0446 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0432 \u0432\u0438\u0434\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430, \u0444\u0443\u043d\u043a\u0446\u0438\u044f <code>COUNT(column_name)<\/code> \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u044d\u0442\u043e\u0433\u043e \u0441\u0442\u043e\u043b\u0431\u0446\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 <code>NULL<\/code>. \u0417\u0430\u043f\u0438\u0441\u0438 \u0441\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 <code>NULL<\/code> \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u0443\u044e\u0442\u0441\u044f.<\/p>\n<pre>SELECT COUNT(column_name) FROM table_name<\/pre>\n<p>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u044e <code>mysql_num_rows()<\/code> \u043d\u0435\u043b\u044c\u0437\u044f, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u0443\u0437\u043d\u0430\u0442\u044c \u043e\u0431\u0449\u0435\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439, \u043d\u0443\u0436\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0437\u0430\u043f\u0440\u043e\u0441 <code>SELECT * FROM db<\/code>, \u0442\u043e \u0435\u0441\u0442\u044c \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0432\u0441\u0435 \u0437\u0430\u043f\u0438\u0441\u0438, \u0430 \u044d\u0442\u043e \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u043f\u0440\u0435\u0434\u043f\u043e\u0447\u0442\u0438\u0442\u0435\u043b\u044c\u043d\u0435\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u044e <code>count<\/code>.<\/p>\n<pre>$result = mysql_query(\"SELECT COUNT (*) as rec FROM db\");<\/pre>\n<h2><span id=\"_COUNT\">\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 COUNT() \u043d\u0430 \u043f\u0440\u0438\u043c\u0435\u0440\u0435<\/span><\/h2>\n<p>\u0412\u043e\u0442 \u0435\u0449\u0435 \u043e\u0434\u0438\u043d \u043f\u0440\u0438\u043c\u0435\u0440 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u0438 <code>COUNT()<\/code>. \u0414\u043e\u043f\u0443\u0441\u0442\u0438\u043c, \u0435\u0441\u0442\u044c \u0442\u0430\u0431\u043b\u0438\u0446\u0430 <code>ice_cream<\/code> \u0441 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u043e\u043c \u043c\u043e\u0440\u043e\u0436\u0435\u043d\u043e\u0433\u043e, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043d\u0430\u0445\u043e\u0434\u044f\u0442\u0441\u044f \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0439 \u0438 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u044f \u043c\u043e\u0440\u043e\u0436\u0435\u043d\u043e\u0433\u043e:<\/p>\n<table border=\"1\" cellspacing=\"1\" cellpadding=\"5\">\n<thead>\n<tr>\n<th>id<\/th>\n<th>name<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>\u00ab\u041f\u043b\u043e\u043c\u0431\u0438\u0440 \u2116\u00a01\u00bb<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>100% \u043c\u043e\u0440\u043e\u0436\u0435\u043d\u043e\u0435<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>\u042d\u0441\u043a\u0438\u043c\u043e \u2116 1<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>\u00ab\u0420\u0443\u043c\u0431\u0430\u00bb<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>\u00ab\u0424\u0440\u0443\u0442\u0441\u043e\u043a\u00bb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote class=\"info\"><p><strong>\u0417\u0430\u0434\u0430\u0447\u0430:<\/strong> \u041d\u0443\u0436\u043d\u043e \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c, \u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0439 \u043c\u043e\u0440\u043e\u0436\u0435\u043d\u043e\u0433\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u0442\u0441\u044f \u0432 \u043a\u0430\u0436\u0434\u043e\u0439 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438.<\/p><\/blockquote>\n<p><strong>\u0420\u0435\u0448\u0435\u043d\u0438\u0435<\/strong> \u044d\u0442\u043e\u0439 \u0437\u0430\u0434\u0430\u0447\u0438 \u043e\u0447\u0435\u0432\u0438\u0434\u043d\u043e:<\/p>\n<p><code>SELECT id, COUNT(*) FROM ice_cream GROUP BY id<\/code><\/p>\n<p><strong>\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442:<\/strong><\/p>\n<table border=\"1\" cellspacing=\"1\" cellpadding=\"5\">\n<thead>\n<tr>\n<th>id<\/th>\n<th>count<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0415\u0441\u043b\u0438\u00a0\u043d\u0430\u0434\u043e \u0432\u044b\u0432\u0435\u0441\u0442\u0438 \u043d\u0430\u0441\u0435\u043b\u0435\u043d\u043d\u044b\u0439 \u043f\u0443\u043d\u043a\u0442 \u0438 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043d\u0430\u0441\u0435\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0443\u043d\u043a\u0442\u043e\u0432 \u0432 \u0433\u043e\u0440\u043e\u0434\u0435, \u0442\u043e \u043c\u043e\u0436\u043d\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0442\u0430\u043a\u0438\u043c \u043a\u043e\u0434\u043e\u043c:<\/p>\n<pre>SELECT tab1.subcity,COUNT(tab2.city) FROM tab1 LEFT JOIN tab2 ON tab1.subsity = tab2.subcity<\/pre>\n<h2><span id=\"i-2\">\u0420\u0435\u0437\u044e\u043c\u0435<\/span><\/h2>\n<p>\u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u0434\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0431\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u0445 \u0437\u0430\u0434\u0430\u0447 \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u044e <code>COUNT()<\/code> \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0434\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435, \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u044e\u0449\u0435\u0435 <code>NULL<\/code> \u0438\u043b\u0438 <code>NOT NULL<\/code>. \u0415\u0441\u043b\u0438 \u0441\u0442\u0440\u043e\u043a\u0443 \u043d\u0443\u0436\u043d\u043e \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u2014 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 \u0434\u043e\u043b\u0436\u043d\u043e \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0442\u044c <code>NOT NULL<\/code>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0427\u0442\u043e\u0431\u044b \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c <mark>\u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 MySQL,<\/mark> \u043d\u0443\u0436\u043d\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 <code>COUNT().<\/code><\/p>\n","protected":false},"author":2,"featured_media":24954,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u041a\u0430\u043a \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 MySQL<\/title>\n<meta name=\"description\" content=\"\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 MySQL \u043c\u043e\u0436\u043d\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0438 COUNT().\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atbliss.ru\/count-records-mysql\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u041a\u0430\u043a \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 MySQL\" \/>\n<meta property=\"og:description\" content=\"\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 MySQL \u043c\u043e\u0436\u043d\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0438 COUNT().\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atbliss.ru\/count-records-mysql\/\" \/>\n<meta property=\"og:site_name\" content=\"\u265b atbliss.ru\" \/>\n<meta property=\"article:published_time\" content=\"2010-07-01T12:41:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-08-11T17:43:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/atbliss.ru\/wp-content\/uploads\/shutterstock_251287180.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"700\" \/>\n\t<meta property=\"og:image:height\" content=\"519\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:creator\" content=\"@fortresseo\" \/>\n<meta name=\"twitter:site\" content=\"@fortresseo\" \/>\n<meta name=\"twitter:label1\" 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