{"id":5182,"date":"2024-11-14T12:11:41","date_gmt":"2024-11-14T04:11:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5182\/"},"modified":"2024-11-14T12:11:41","modified_gmt":"2024-11-14T04:11:41","slug":"sql%e4%b8%adlimit%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5182\/","title":{"rendered":"sql\u4e2dlimit\u7684\u7528\u6cd5"},"content":{"rendered":"<blockquote><p>\n  sql \u4e2d limit \u5b50\u53e5\u53ef\u9650\u5236\u67e5\u8be2\u8fd4\u56de\u7684\u884c\u6570\uff0c\u7528\u4e8e\u5206\u9875\u3001\u9884\u89c8\u6570\u636e\u548c\u9650\u5236\u8d44\u6e90\u4f7f\u7528\u3002\u8bed\u6cd5\uff1aselect &#8230; from &#8230; limit [offset,] row_count\u3002\u7528\u6cd5\uff1a\u83b7\u53d6\u524d n \u884c\uff1alimit row_count\uff1b\u83b7\u53d6\u504f\u79fb\u540e n \u884c\uff1alimit row_count offset offset\uff1b\u83b7\u53d6\u6700\u540e n \u884c\uff1alimit row_count offset -n\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/24\/2024052418571957131.jpg\" class=\"aligncenter\" title=\"sql\u4e2dlimit\u7684\u7528\u6cd5\u63d2\u56fe\" alt=\"sql\u4e2dlimit\u7684\u7528\u6cd5\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u4e2d LIMIT \u7528\u6cd5<\/strong><\/p>\n<p>LIMIT \u5b50\u53e5\u7528\u4e8e\u9650\u5236\u67e5\u8be2\u4e2d\u8fd4\u56de\u7684\u884c\u6570\u3002\u5b83\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<ul>\n<li> <strong>\u5206\u9875\uff1a<\/strong> \u5c06\u5927\u578b\u6570\u636e\u96c6\u62c6\u5206\u4e3a\u8f83\u5c0f\u7684\u5757\uff0c\u4ee5\u4fbf\u66f4\u5bb9\u6613\u7ba1\u7406\u3002<\/li>\n<li> <strong>\u9884\u89c8\u6570\u636e\uff1a<\/strong> \u5feb\u901f\u67e5\u770b\u6570\u636e\u96c6\u4e2d\u7684\u524d\u51e0\u884c\u6216\u6700\u540e\u51e0\u884c\u3002<\/li>\n<li> <strong>\u9650\u5236\u8d44\u6e90\u4f7f\u7528\uff1a<\/strong> \u9632\u6b62\u67e5\u8be2\u8fd4\u56de\u8fc7\u591a\u6570\u636e\uff0c\u4ece\u800c\u8282\u7701\u670d\u52a1\u5668\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<pre>SELECT column1, column2, ...\nFROM table_name\nLIMIT [offset,] row_count<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ul>\n<li> <strong>offset\uff1a<\/strong>\uff08\u53ef\u9009\uff09\u8981\u8df3\u8fc7\u7684\u884c\u6570\uff0c\u4ece 0 \u5f00\u59cb\u3002<\/li>\n<li> <strong>row_count\uff1a<\/strong>\u8981\u8fd4\u56de\u7684\u884c\u6570\u3002<\/li>\n<\/ul>\n<p><strong>\u7528\u6cd5<\/strong><\/p>\n<ul>\n<li>\n<p><strong>\u83b7\u53d6\u524d N \u884c\uff1a<\/strong> \u53ea\u9700\u6307\u5b9a row_count \u5373\u53ef\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>SELECT * FROM table_name LIMIT 5;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236  <\/p>\n<p>\u8fd9\u5c06\u8fd4\u56de\u8868\u4e2d\u524d 5 \u884c\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u83b7\u53d6\u504f\u79fb\u540e N \u884c\uff1a<\/strong> \u6307\u5b9a offset \u548c row_count\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>SELECT * FROM table_name LIMIT 5 OFFSET 10;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236  <\/p>\n<p>\u8fd9\u5c06\u8fd4\u56de\u8868\u4e2d\u4ece\u7b2c 11 \u884c\u5230\u7b2c 15 \u884c\u7684\u6570\u636e\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u83b7\u53d6\u6700\u540e N \u884c\uff1a<\/strong> \u4f7f\u7528\u8d1f\u6570 offset \u503c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>SELECT * FROM table_name LIMIT 5 OFFSET -5;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236  <\/p>\n<p>\u8fd9\u5c06\u8fd4\u56de\u8868\u4e2d\u6700\u540e 5 \u884c\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>LIMIT \u5b50\u53e5\u5fc5\u987b\u653e\u5728\u67e5\u8be2\u7684\u672b\u5c3e\u3002<\/li>\n<li>\u5982\u679c\u672a\u6307\u5b9a offset\uff0c\u5219\u9ed8\u8ba4\u503c\u4e3a 0\u3002<\/li>\n<li>\u5982\u679c row_count \u4e3a\u8d1f\u6570\uff0c\u5219\u5c06\u8fd4\u56de\u4ece\u8868\u672b\u5c3e\u5f00\u59cb\u7684\u884c\u6570\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u4e2dlimit\u7684\u7528\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sql \u4e2d limit \u5b50\u53e5\u53ef\u9650\u5236\u67e5\u8be2\u8fd4\u56de\u7684\u884c\u6570\uff0c\u7528\u4e8e\u5206\u9875\u3001\u9884\u89c8\u6570\u636e\u548c\u9650\u5236\u8d44\u6e90\u4f7f\u7528\u3002\u8bed\u6cd5\uff1aselect &#8230; from &#8230; limit [offset,] row_count\u3002\u7528\u6cd5\uff1a\u83b7\u53d6\u524d n \u884c\uff1alimit row_count\uff1b\u83b7\u53d6\u504f\u79fb\u540e n \u884c\uff1alimit row_count offset offset\uff1b\u83b7\u53d6\u6700\u540e n \u884c\uff1alimit row_count offset -n\u3002 SQL \u4e2d LIMIT \u7528\u6cd5 LIMIT \u5b50\u53e5\u7528\u4e8e\u9650\u5236\u67e5\u8be2\u4e2d\u8fd4\u56de\u7684\u884c\u6570\u3002\u5b83\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u975e\u5e38\u6709\u7528\uff1a \u5206\u9875\uff1a \u5c06\u5927\u578b\u6570\u636e\u96c6\u62c6\u5206\u4e3a\u8f83\u5c0f\u7684\u5757\uff0c\u4ee5\u4fbf\u66f4\u5bb9\u6613\u7ba1\u7406\u3002 \u9884\u89c8\u6570\u636e\uff1a \u5feb\u901f\u67e5\u770b\u6570\u636e\u96c6\u4e2d\u7684\u524d\u51e0\u884c\u6216\u6700\u540e\u51e0\u884c\u3002 \u9650\u5236\u8d44\u6e90\u4f7f\u7528\uff1a \u9632\u6b62\u67e5\u8be2\u8fd4\u56de\u8fc7\u591a\u6570\u636e\uff0c\u4ece\u800c\u8282\u7701\u670d\u52a1\u5668\u8d44\u6e90\u3002 \u8bed\u6cd5 SELECT column1, column2, &#8230; FROM table_name LIMIT [offset,] row_count \u767b\u5f55\u540e\u590d\u5236 offset\uff1a\uff08\u53ef\u9009\uff09\u8981\u8df3\u8fc7\u7684\u884c\u6570\uff0c\u4ece 0 \u5f00\u59cb\u3002 row_count\uff1a\u8981\u8fd4\u56de\u7684\u884c\u6570\u3002 \u7528\u6cd5 \u83b7\u53d6\u524d N \u884c\uff1a \u53ea\u9700\u6307\u5b9a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5182","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5182","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5182"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5182\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}