{"id":152711,"date":"2024-11-02T01:23:22","date_gmt":"2024-11-01T17:23:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152711\/"},"modified":"2024-11-02T01:23:23","modified_gmt":"2024-11-01T17:23:23","slug":"%e5%b8%b8%e8%a6%8b%e7%9a%84-oracle-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e4%bb%8b%e7%b4%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152711\/","title":{"rendered":"\u5e38\u898b\u7684 ORACLE \u6578\u64da\u985e\u578b\u4ecb\u7d39"},"content":{"rendered":"<h1 id=\"%e5%b8%b8%e8%a6%8b%e7%9a%84-oracle-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e4%bb%8b%e7%b4%b9-ezNxtODQBa\">\u5e38\u898b\u7684 ORACLE \u6578\u64da\u985e\u578b\u4ecb\u7d39<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u985e\u578b\u662f\u5b9a\u7fa9\u6578\u64da\u5b58\u5132\u683c\u5f0f\u7684\u57fa\u672c\u5143\u7d20\u3002Oracle \u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u61c9\u7528\u9700\u6c42\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5e38\u898b\u7684 Oracle \u6578\u64da\u985e\u578b\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3002<\/p>\n<h2 id=\"1-%e6%95%b4%e6%95%b8%e9%a1%9e%e5%9e%8b-ezNxtODQBa\">1. \u6574\u6578\u985e\u578b<\/h2>\n<p>\u6574\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\u3002Oracle \u63d0\u4f9b\u4e86\u5e7e\u7a2e\u6574\u6578\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>NUMBER<\/code>: \u53ef\u4ee5\u5b58\u5132\u4efb\u610f\u7cbe\u5ea6\u7684\u6578\u5b57\uff0c\u7bc4\u570d\u5f9e -10<sup>125<\/sup> \u5230 10<sup>125<\/sup>\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (id NUMBER);<\/code><\/pre>\n<li><code>INTEGER<\/code>: \u662f <code>NUMBER<\/code> \u7684\u4e00\u7a2e\u7279\u6b8a\u5f62\u5f0f\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (id INTEGER);<\/code><\/pre>\n<li><code>SMALLINT<\/code>: \u7528\u65bc\u5b58\u5132\u8f03\u5c0f\u7bc4\u570d\u7684\u6574\u6578\uff0c\u7bc4\u570d\u70ba -32,768 \u5230 32,767\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (id SMALLINT);<\/code><\/pre>\n<\/ul>\n<h2 id=\"2-%e6%b5%ae%e9%bb%9e%e6%95%b8%e9%a1%9e%e5%9e%8b-ezNxtODQBa\">2. \u6d6e\u9ede\u6578\u985e\u578b<\/h2>\n<p>\u6d6e\u9ede\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u5e36\u6709\u5c0f\u6578\u7684\u6578\u5b57\u3002Oracle \u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6d6e\u9ede\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>FLOAT<\/code>: \u662f <code>NUMBER<\/code> \u7684\u4e00\u7a2e\u7279\u6b8a\u5f62\u5f0f\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u6d6e\u9ede\u6578\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (price FLOAT);<\/code><\/pre>\n<li><code>REAL<\/code>: \u7528\u65bc\u5b58\u5132\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u7bc4\u570d\u70ba -3.4028235E38 \u5230 3.4028235E38\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (price REAL);<\/code><\/pre>\n<li><code>DOUBLE PRECISION<\/code>: \u7528\u65bc\u5b58\u5132\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u7bc4\u570d\u66f4\u5927\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (price DOUBLE PRECISION);<\/code><\/pre>\n<\/ul>\n<h2 id=\"3-%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%a1%9e%e5%9e%8b-ezNxtODQBa\">3. \u5b57\u7b26\u4e32\u985e\u578b<\/h2>\n<p>\u5b57\u7b26\u4e32\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\u3002Oracle \u63d0\u4f9b\u4e86\u591a\u7a2e\u5b57\u7b26\u4e32\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><code>CHAR<\/code>: \u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u6578\u64da\uff0c\u6700\u5927\u9577\u5ea6\u70ba 2000 \u5b57\u7b26\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (name CHAR(50));<\/code><\/pre>\n<li><code>VARCHAR2<\/code>: \u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u6578\u64da\uff0c\u6700\u5927\u9577\u5ea6\u70ba 4000 \u5b57\u7b26\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (name VARCHAR2(50));<\/code><\/pre>\n<li><code>CLOB<\/code>: \u7528\u65bc\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\uff0c\u6700\u5927\u9577\u5ea6\u53ef\u9054 4GB\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (description CLOB);<\/code><\/pre>\n<\/ul>\n<h2 id=\"4-%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-ezNxtODQBa\">4. \u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>Oracle \u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u6578\u64da\u985e\u578b\uff0c\u4ee5\u4fbf\u65bc\u8655\u7406\u6642\u9593\u76f8\u95dc\u7684\u6578\u64da\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>: \u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u7cbe\u78ba\u5230\u79d2\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (event_date DATE);<\/code><\/pre>\n<li><code>TIMESTAMP<\/code>: \u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u7cbe\u78ba\u5230\u5fae\u79d2\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (event_timestamp TIMESTAMP);<\/code><\/pre>\n<li><code>INTERVAL<\/code>: \u7528\u65bc\u8868\u793a\u6642\u9593\u9593\u9694\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (duration INTERVAL DAY TO SECOND);<\/code><\/pre>\n<\/ul>\n<h2 id=\"5-%e4%ba%8c%e9%80%b2%e5%88%b6%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-ezNxtODQBa\">5. \u4e8c\u9032\u5236\u6578\u64da\u985e\u578b<\/h2>\n<p>\u4e8c\u9032\u5236\u6578\u64da\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u5982\u5716\u50cf\u6216\u6587\u4ef6\uff1a<\/p>\n<ul>\n<li><code>BLOB<\/code>: \u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u5927\u5c0d\u8c61\uff0c\u6700\u5927\u9577\u5ea6\u53ef\u9054 4GB\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (file_data BLOB);<\/code><\/pre>\n<li><code>RAW<\/code>: \u7528\u65bc\u5b58\u5132\u56fa\u5b9a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0c\u6700\u5927\u9577\u5ea6\u70ba 2000 \u5b57\u7bc0\u3002\u7528\u6cd5\u793a\u4f8b\uff1a<\/li>\n<pre><code>CREATE TABLE example (binary_data RAW(100));<\/code><\/pre>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ezNxtODQBa\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3 Oracle \u6578\u64da\u985e\u578b\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7d50\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5b58\u5132\u7684\u6548\u7387\uff0c\u9084\u80fd\u589e\u5f37\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u662f\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u4e32\u3001\u65e5\u671f\u6642\u9593\u9084\u662f\u4e8c\u9032\u5236\u6578\u64da\u985e\u578b\uff0cOracle \u90fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u9078\u64c7\u4f86\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5e38\u898b\u7684 ORACLE \u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u6578\u5b57\u3001\u5b57\u7b26\u3001\u65e5\u671f\u7b49\uff0c\u5e6b\u52a9\u60a8\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\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-152711","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152711","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=152711"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152711\/revisions"}],"predecessor-version":[{"id":152712,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152711\/revisions\/152712"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}