{"id":186176,"date":"2024-11-11T03:44:28","date_gmt":"2024-11-10T19:44:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186176\/"},"modified":"2024-11-11T03:44:29","modified_gmt":"2024-11-10T19:44:29","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e4%bd%8d%e7%bd%ae%e6%9f%a5%e8%a9%a2%e6%96%b9%e6%b3%95%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%9f%90%e5%80%8b%e8%a1%a8%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186176\/","title":{"rendered":"\u6578\u64da\u5eab\u8868\u4f4d\u7f6e\u67e5\u8a62\u65b9\u6cd5\uff08\u6578\u64da\u5eab\u5982\u4f55\u67e5\u770b\u67d0\u500b\u8868\u7684\u4f4d\u7f6e\uff09"},"content":{"rendered":"

\u6578\u64da\u5eab\u8868\u4f4d\u7f6e\u67e5\u8a62\u65b9\u6cd5\uff08\u6578\u64da\u5eab\u5982\u4f55\u67e5\u770b\u67d0\u500b\u8868\u7684\u4f4d\u7f6e\uff09<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e86\u89e3\u5982\u4f55\u67e5\u8a62\u67d0\u500b\u8868\u7684\u4f4d\u7f6e\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u6578\u64da\u7684\u7ba1\u7406\u548c\u7dad\u8b77\uff0c\u9084\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u67e5\u8a62\u8868\u4f4d\u7f6e\u7684\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

1. MySQL \u4e2d\u67e5\u8a62\u8868\u7684\u4f4d\u7f6e<\/h2>\n

\u5728 MySQL \u4e2d\uff0c\u8868\u7684\u4f4d\u7f6e\u901a\u5e38\u6307\u7684\u662f\u8868\u7684\u7269\u7406\u5b58\u5132\u4f4d\u7f6e\u3002\u53ef\u4ee5\u901a\u904e\u67e5\u8a62 information_schema<\/code> \u6578\u64da\u5eab\u4f86\u7372\u53d6\u9019\u4e9b\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u67d0\u500b\u8868\u4f4d\u7f6e\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n

SELECT \n    table_name, \n    table_rows, \n    data_length, \n    index_length, \n    data_free \nFROM \n    information_schema.tables \nWHERE \n    table_schema = '\u4f60\u7684\u6578\u64da\u5eab\u540d' \n    AND table_name = '\u4f60\u7684\u8868\u540d';<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u6307\u5b9a\u6578\u64da\u5eab\u4e2d\u67d0\u500b\u8868\u7684\u884c\u6578\u3001\u6578\u64da\u9577\u5ea6\u3001\u7d22\u5f15\u9577\u5ea6\u548c\u7a7a\u9592\u7a7a\u9593\u7b49\u4fe1\u606f\uff0c\u9019\u4e9b\u90fd\u53ef\u4ee5\u5e6b\u52a9\u4f60\u4e86\u89e3\u8868\u7684\u5b58\u5132\u60c5\u6cc1\u3002<\/p>\n
2. PostgreSQL \u4e2d\u67e5\u8a62\u8868\u7684\u4f4d\u7f6e<\/h2>\n
\u5728 PostgreSQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 pg_relation_size<\/code> \u51fd\u6578\u4f86\u67e5\u8a62\u8868\u7684\u5927\u5c0f\uff0c\u9019\u4e5f\u53ef\u4ee5\u8996\u70ba\u8868\u7684\u4f4d\u7f6e\u3002\u4ee5\u4e0b\u662f\u76f8\u61c9\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n
SELECT \n    pg_size_pretty(pg_relation_size('\u4f60\u7684\u8868\u540d')) AS size; <\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u5927\u5c0f\uff0c\u4e26\u4ee5\u53ef\u8b80\u7684\u683c\u5f0f\u986f\u793a\u51fa\u4f86\u3002\u82e5\u8981\u67e5\u8a62\u6240\u6709\u8868\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
SELECT \n    table_name, \n    pg_size_pretty(pg_relation_size(table_name)) AS size \nFROM \n    information_schema.tables \nWHERE \n    table_schema = 'public';<\/code><\/pre>\n
3. SQL Server \u4e2d\u67e5\u8a62\u8868\u7684\u4f4d\u7f6e<\/h2>\n
\u5728 SQL Server \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u7cfb\u7d71\u8996\u5716\u4f86\u67e5\u8a62\u8868\u7684\u7269\u7406\u5b58\u5132\u4f4d\u7f6e\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u67d0\u500b\u8868\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n
SELECT \n    t.name AS TableName, \n    p.rows AS RowCounts, \n    SUM(a.total_pages) * 8 AS TotalSpaceKB, \n    SUM(a.used_pages) * 8 AS UsedSpaceKB, \n    (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB \nFROM \n    sys.tables t \nINNER JOIN \n    sys.indexes i ON t.object_id = i.object_id \nINNER JOIN \n    sys.partitions p ON i.object_id = p.object_id AND i.index_id = p.index_id \nINNER JOIN \n    sys.allocation_units a ON p.partition_id = a.container_id \nWHERE \n    t.name = '\u4f60\u7684\u8868\u540d' \nGROUP BY \n    t.name, p.rows; <\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u884c\u6578\u3001\u7e3d\u7a7a\u9593\u3001\u5df2\u7528\u7a7a\u9593\u548c\u672a\u7528\u7a7a\u9593\u7b49\u4fe1\u606f\u3002<\/p>\n
4. Oracle \u4e2d\u67e5\u8a62\u8868\u7684\u4f4d\u7f6e<\/h2>\n
\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 DBA_SEGMENTS<\/code> \u8996\u5716\u4f86\u67e5\u8a62\u8868\u7684\u5b58\u5132\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u67d0\u500b\u8868\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n
SELECT \n    segment_name, \n    bytes \/ 1024 \/ 1024 AS size_mb \nFROM \n    dba_segments \nWHERE \n    segment_type = 'TABLE' \n    AND segment_name = '\u4f60\u7684\u8868\u540d';<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u7684\u5927\u5c0f\uff0c\u4ee5 MB \u70ba\u55ae\u4f4d\u986f\u793a\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4e86\u89e3\u5982\u4f55\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u67d0\u500b\u8868\u7684\u4f4d\u7f6e\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u8005\u4f86\u8aaa\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f MySQL\u3001PostgreSQL\u3001SQL Server \u9084\u662f Oracle\uff0c\u9019\u4e9b\u67e5\u8a62\u65b9\u6cd5\u90fd\u80fd\u5e6b\u52a9\u4f60\u7372\u53d6\u6709\u95dc\u8868\u7684\u5b58\u5132\u4fe1\u606f\u3002\u900f\u904e\u9019\u4e9b\u4fe1\u606f\uff0c\u4f60\u53ef\u4ee5\u66f4\u597d\u5730\u9032\u884c\u6578\u64da\u5eab\u7684\u512a\u5316\u548c\u7dad\u8b77\u3002<\/p>\n
\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u67d0\u500b\u8868\u7684\u4f4d\u7f6e\uff0c\u638c\u63e1\u6709\u6548\u7684\u6578\u64da\u5eab\u8868\u4f4d\u7f6e\u67e5\u8a62\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-186176","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=186176"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186176\/revisions"}],"predecessor-version":[{"id":186177,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186176\/revisions\/186177"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}