{"id":16,"date":"2026-06-12T20:59:17","date_gmt":"2026-06-12T12:59:17","guid":{"rendered":"https:\/\/blog-1501514697.top\/?p=16"},"modified":"2026-06-15T14:00:41","modified_gmt":"2026-06-15T06:00:41","slug":"postgresql%e5%b8%b8%e7%94%a8%e5%91%bd%e4%bb%a4%e8%ae%b0%e5%bd%95","status":"publish","type":"post","link":"https:\/\/blog-1501514697.top\/?p=16","title":{"rendered":"PostgreSQL\u5e38\u7528\u547d\u4ee4\u8bb0\u5f55"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">PostgreSQL \u6e05\u7a7a\u3001\u5907\u4efd\u3001\u6062\u590d\u6307\u5b9a Schema \u6570\u636e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 PostgreSQL \u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u9700\u8981\u6e05\u7a7a\u67d0\u4e2a schema \u4e0b\u6240\u6709\u8868\u6570\u636e\u3001\u5907\u4efd\u67d0\u4e2a schema\uff0c\u6216\u8005\u6062\u590d\u5907\u4efd\u6570\u636e\u7684\u60c5\u51b5\u3002\u4e0b\u9762\u6574\u7406\u51e0\u4e2a\u5e38\u7528\u547d\u4ee4\u548c\u811a\u672c\uff0c\u65b9\u4fbf\u65e5\u5e38\u8fd0\u7ef4\u4f7f\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001\u6e05\u7a7a Schema \u4e0b\u6240\u6709\u8868\u6570\u636e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u53ea\u60f3\u6e05\u7a7a\u67d0\u4e2a schema \u4e0b\u6240\u6709\u8868\u7684\u6570\u636e\uff0c\u4f46\u4e0d\u5220\u9664\u8868\u7ed3\u6784\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u533f\u540d\u4ee3\u7801\u5757\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-sql\">DO $$\nDECLARE\n    r RECORD;\nBEGIN\n    -- \u67e5\u8be2 public schema \u4e0b\u7684\u6240\u6709\u8868\n    FOR r IN\n        SELECT tablename\n        FROM pg_tables\n        WHERE schemaname = 'public'\n    LOOP\n        -- \u6e05\u7a7a\u8868\u6570\u636e\uff0c\u5e76\u91cd\u7f6e\u81ea\u589e\u5e8f\u5217\n        EXECUTE 'TRUNCATE TABLE public.' || quote_ident(r.tablename) || ' RESTART IDENTITY CASCADE';\n    END LOOP;\nEND $$;\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u811a\u672c\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>DO $$ ... END $$;<\/code>\uff1aPostgreSQL \u7684\u533f\u540d\u4ee3\u7801\u5757\uff0c\u53ef\u4ee5\u5728\u91cc\u9762\u5199\u53d8\u91cf\u3001\u5faa\u73af\u3001\u6761\u4ef6\u5224\u65ad\u7b49\u903b\u8f91\u3002<\/li>\n<li><code>DECLARE r RECORD;<\/code>\uff1a\u58f0\u660e\u4e00\u4e2a\u8bb0\u5f55\u7c7b\u578b\u53d8\u91cf\uff0c\u7528\u6765\u4fdd\u5b58\u6bcf\u6b21\u67e5\u8be2\u51fa\u6765\u7684\u8868\u540d\u3002<\/li>\n<li><code>FOR r IN ... LOOP<\/code>\uff1a\u5faa\u73af\u904d\u5386\u5f53\u524d schema \u4e0b\u7684\u6240\u6709\u8868\u3002<\/li>\n<li><code>TRUNCATE TABLE<\/code>\uff1a\u5feb\u901f\u6e05\u7a7a\u6574\u5f20\u8868\u7684\u6570\u636e\u3002<\/li>\n<li><code>RESTART IDENTITY<\/code>\uff1a\u91cd\u7f6e\u8868\u4e2d\u7684\u81ea\u589e\u5e8f\u5217\u3002<\/li>\n<li><code>CASCADE<\/code>\uff1a\u5982\u679c\u8868\u4e4b\u95f4\u5b58\u5728\u5916\u952e\u5173\u8054\uff0c\u4f1a\u540c\u65f6\u5904\u7406\u76f8\u5173\u4f9d\u8d56\u8868\u3002<\/li>\n<li><code>quote_ident<\/code>\uff1a\u7528\u4e8e\u5b89\u5168\u5730\u5904\u7406\u8868\u540d\uff0c\u907f\u514d\u8868\u540d\u4e2d\u5b58\u5728\u7279\u6b8a\u5b57\u7b26\u5bfc\u81f4 SQL \u6267\u884c\u5931\u8d25\u3002<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u4e0a\u9762\u7684\u811a\u672c\u64cd\u4f5c\u7684\u662f <code>public<\/code> schema\u3002\u5982\u679c\u4f60\u8981\u6e05\u7a7a\u5176\u4ed6 schema\uff0c\u4f8b\u5982 <code>mawl00<\/code>\uff0c\u9700\u8981\u628a\u811a\u672c\u4e2d\u7684 <code>public<\/code> \u6539\u6210\u5bf9\u5e94\u7684 schema \u540d\u79f0\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001\u5907\u4efd\u6307\u5b9a Schema \u7684\u7ed3\u6784\u548c\u6570\u636e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u9700\u8981\u5907\u4efd\u67d0\u4e2a schema \u4e0b\u6240\u6709\u8868\u7684\u7ed3\u6784\u548c\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>pg_dump<\/code> \u547d\u4ee4\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">pg_dump -U postgres -d \u6570\u636e\u5e93\u540d -n schema\u540d &gt; backup.sql<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-U postgres<\/code>\uff1a\u6307\u5b9a\u8fde\u63a5\u6570\u636e\u5e93\u7684\u7528\u6237\u4e3a <code>postgres<\/code>\u3002<\/li>\n<li><code>-d \u6570\u636e\u5e93\u540d<\/code>\uff1a\u6307\u5b9a\u8981\u5907\u4efd\u7684\u6570\u636e\u5e93\u540d\u79f0\u3002<\/li>\n<li><code>-n schema\u540d<\/code>\uff1a\u6307\u5b9a\u53ea\u5907\u4efd\u67d0\u4e2a schema\u3002<\/li>\n<li><code>&gt; backup.sql<\/code>\uff1a\u5c06\u5907\u4efd\u5185\u5bb9\u8f93\u51fa\u5230 <code>backup.sql<\/code> \u6587\u4ef6\u4e2d\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">pg_dump -U postgres -d my_database -n public &gt; backup.sql<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5982\u679c\u6267\u884c\u547d\u4ee4\u65f6\u9047\u5230\uff1a<\/p>\n<p><code>Peer authentication failed for user \"postgres\"<\/code><\/p>\n<p>\u8bf4\u660e\u5f53\u524d Linux \u7528\u6237\u65e0\u6cd5\u76f4\u63a5\u901a\u8fc7 <code>postgres<\/code> \u6570\u636e\u5e93\u7528\u6237\u8fdb\u884c\u672c\u5730\u8ba4\u8bc1\u3002\u53ef\u4ee5\u5207\u6362\u5230 Linux \u7cfb\u7edf\u4e2d\u7684 <code>postgres<\/code> \u7528\u6237\u6765\u6267\u884c\u547d\u4ee4\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">sudo -u postgres pg_dump -d \u6570\u636e\u5e93\u540d -n schema\u540d &gt; backup.sql<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">sudo -u postgres pg_dump -d my_database -n public &gt; backup.sql<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001\u6062\u590d\u6307\u5b9a Schema \u7684\u7ed3\u6784\u548c\u6570\u636e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u5df2\u7ecf\u6709\u5907\u4efd\u6587\u4ef6 <code>backup.sql<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>psql<\/code> \u547d\u4ee4\u6062\u590d\u5230\u6307\u5b9a\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">psql -U postgres -d \u6570\u636e\u5e93\u540d &lt; backup.sql<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">psql -U postgres -d my_database &lt; backup.sql<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u540c\u6837\u9047\u5230 <code>Peer authentication failed for user \"postgres\"<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u65b9\u5f0f\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">sudo -u postgres psql -d \u6570\u636e\u5e93\u540d &lt; backup.sql<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\">sudo -u postgres psql -d my_database &lt; backup.sql<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u3001\u5e38\u89c1\u6ce8\u610f\u4e8b\u9879<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6e05\u7a7a\u6570\u636e\u524d\u4e00\u5b9a\u8981\u786e\u8ba4 schema \u540d\u79f0\uff0c\u907f\u514d\u8bef\u6e05\u7a7a\u5176\u4ed6\u4e1a\u52a1\u8868\u3002<\/li>\n<li><code>TRUNCATE<\/code> \u6267\u884c\u901f\u5ea6\u5f88\u5feb\uff0c\u4f46\u4e5f\u5f88\u5371\u9669\uff0c\u6267\u884c\u524d\u5efa\u8bae\u5148\u505a\u597d\u5907\u4efd\u3002<\/li>\n<li><code>RESTART IDENTITY<\/code> \u4f1a\u91cd\u7f6e\u81ea\u589e ID\uff0c\u5982\u679c\u4e0d\u60f3\u91cd\u7f6e\u81ea\u589e\u5e8f\u5217\uff0c\u53ef\u4ee5\u53bb\u6389\u8be5\u53c2\u6570\u3002<\/li>\n<li><code>CASCADE<\/code> \u4f1a\u5904\u7406\u5916\u952e\u5173\u8054\u8868\uff0c\u4f7f\u7528\u524d\u9700\u8981\u786e\u8ba4\u662f\u5426\u4f1a\u5f71\u54cd\u5176\u4ed6\u8868\u6570\u636e\u3002<\/li>\n<li>\u5982\u679c\u53ea\u662f\u5907\u4efd\u67d0\u4e2a schema\uff0c\u5efa\u8bae\u4f7f\u7528 <code>pg_dump -n schema\u540d<\/code>\uff0c\u4e0d\u8981\u76f4\u63a5\u5907\u4efd\u6574\u4e2a\u6570\u636e\u5e93\u3002<\/li>\n<li>\u6062\u590d\u6570\u636e\u524d\uff0c\u6700\u597d\u786e\u8ba4\u76ee\u6807\u6570\u636e\u5e93\u662f\u5426\u5df2\u7ecf\u5b58\u5728\u76f8\u540c\u7684 schema \u548c\u8868\u7ed3\u6784\uff0c\u907f\u514d\u51b2\u7a81\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e94\u3001\u603b\u7ed3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e5\u5e38 PostgreSQL \u8fd0\u7ef4\u4e2d\uff0c\u6e05\u7a7a\u3001\u5907\u4efd\u548c\u6062\u590d schema \u662f\u6bd4\u8f83\u5e38\u89c1\u7684\u64cd\u4f5c\u3002\u7b80\u5355\u603b\u7ed3\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"language-bash\"># \u5907\u4efd\u6307\u5b9a schema\npg_dump -U postgres -d \u6570\u636e\u5e93\u540d -n schema\u540d &gt; backup.sql\n\n# \u6062\u590d\u5907\u4efd\u6587\u4ef6\npsql -U postgres -d \u6570\u636e\u5e93\u540d &lt; backup.sql\n\n# \u5982\u679c\u9047\u5230 Peer authentication failed\nsudo -u postgres pg_dump -d \u6570\u636e\u5e93\u540d -n schema\u540d &gt; backup.sql\nsudo -u postgres psql -d \u6570\u636e\u5e93\u540d &lt; backup.sql\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9e\u9645\u64cd\u4f5c\u65f6\uff0c\u5efa\u8bae\u5148\u5728\u6d4b\u8bd5\u73af\u5883\u9a8c\u8bc1\u811a\u672c\uff0c\u518d\u5230\u6b63\u5f0f\u73af\u5883\u6267\u884c\uff0c\u907f\u514d\u8bef\u64cd\u4f5c\u9020\u6210\u6570\u636e\u4e22\u5931\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u6e05\u7a7a\u3001\u5907\u4efd\u3001\u6062\u590d\u6307\u5b9a Schema \u6570\u636e \u5728 PostgreSQL \u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u9700\u8981\u6e05\u7a7a\u67d0\u4e2a sche &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-16","post","type-post","status-publish","format-standard","hentry","category-5"],"_links":{"self":[{"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=\/wp\/v2\/posts\/16","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16"}],"version-history":[{"count":10,"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=\/wp\/v2\/posts\/16\/revisions"}],"predecessor-version":[{"id":36,"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=\/wp\/v2\/posts\/16\/revisions\/36"}],"wp:attachment":[{"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog-1501514697.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}