{"id":5191,"date":"2024-11-14T08:09:32","date_gmt":"2024-11-14T00:09:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5191\/"},"modified":"2024-11-14T08:09:32","modified_gmt":"2024-11-14T00:09:32","slug":"sql%e4%b8%ad%e7%9a%84interval%e5%87%bd%e6%95%b0%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5191\/","title":{"rendered":"sql\u4e2d\u7684interval\u51fd\u6570\u7528\u6cd5"},"content":{"rendered":"

\n interval \u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u65f6\u95f4\u503c\u4e4b\u95f4\u7684\u5dee\u503c\uff0c\u8fd4\u56de\u7279\u5b9a\u65f6\u95f4\u95f4\u9694\u5185\u7684\u7ed3\u679c\u3002\u7528\u6cd5\uff1a interval\uff08\u65f6\u95f4\u95f4\u9694\u5355\u4f4d \u65f6\u95f4\u95f4\u9694\uff09\uff0c\u5176\u4e2d\u65f6\u95f4\u95f4\u9694\u5355\u4f4d\u5305\u62ec day\u3001hour\u3001minute \u7b49\u3002\n<\/p><\/blockquote>\n

\"sql\u4e2d\u7684interval\u51fd\u6570\u7528\u6cd5\u63d2\u56fe\"<\/p>\n

SQL \u4e2d INTERVAL \u51fd\u6570\u7684\u7528\u6cd5<\/strong><\/p>\n

\u5f15\u8a00<\/strong>
INTERVAL \u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u6216\u65f6\u95f4\u503c\u4e4b\u95f4\u7684\u5dee\u503c\uff0c\u5e76\u4ee5\u7279\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\uff08\u4f8b\u5982\u5929\u3001\u5c0f\u65f6\u6216\u5206\u949f\uff09\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n

\u8bed\u6cd5<\/strong><\/p>\n

INTERVAL (quantity INTERVAL unit)<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  •  quantity<\/strong> \u662f\u8981\u8ba1\u7b97\u5dee\u503c\u7684\u65f6\u95f4\u95f4\u9694\u3002<\/li>\n
  •  unit<\/strong> \u662f\u8981\u4f7f\u7528\u7684\u95f4\u9694\u5355\u4f4d\uff08\u4f8b\u5982\uff0cDAY\u3001HOUR\u3001MINUTE\uff09\u3002<\/li>\n<\/ul>\n
    \u4f7f\u7528\u65b9\u6cd5<\/strong>
    INTERVAL \u51fd\u6570\u6709\u4e24\u4e2a\u53c2\u6570\uff1a<\/p>\n
      \n
    1.  from_date<\/strong>\uff1a\u7b2c\u4e00\u4e2a\u65e5\u671f\u6216\u65f6\u95f4\u503c\u3002<\/li>\n
    2.  to_date<\/strong>\uff1a\u7b2c\u4e8c\u4e2a\u65e5\u671f\u6216\u65f6\u95f4\u503c\u3002<\/li>\n<\/ol>\n
      \u793a\u4f8b<\/strong>
      \u4ee5\u4e0b\u793a\u4f8b\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\uff08’2023-01-01′ \u548c ‘2023-01-15’\uff09\u4e4b\u95f4\u7684\u5929\u6570\u5dee\uff1a<\/p>\n
      SELECT INTERVAL '2023-01-15' - '2023-01-01' DAY;<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u7ed3\u679c\uff1a<\/p>\n
      14<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u4ee5\u4e0b\u793a\u4f8b\u8ba1\u7b97\u4e24\u4e2a\u65f6\u95f4\uff08’12:00:00′ \u548c ’14:30:00’\uff09\u4e4b\u95f4\u7684\u5206\u949f\u5dee\uff1a<\/p>\n
      SELECT INTERVAL '14:30:00' - '12:00:00' MINUTE;<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u7ed3\u679c\uff1a<\/p>\n
      150<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u5176\u4ed6\u7528\u9014<\/strong>
      \u9664\u4e86\u8ba1\u7b97\u65f6\u95f4\u5dee\u4e4b\u5916\uff0cINTERVAL \u51fd\u6570\u8fd8\u53ef\u4ee5\u7528\u4e8e\uff1a<\/p>\n
        \n
      • \u5c06\u65f6\u95f4\u95f4\u9694\u6dfb\u52a0\u5230\u65e5\u671f\u6216\u65f6\u95f4\u503c\u4e2d\u3002<\/li>\n
      • \u4ece\u65e5\u671f\u6216\u65f6\u95f4\u503c\u4e2d\u51cf\u53bb\u65f6\u95f4\u95f4\u9694\u3002<\/li>\n
      • \u6bd4\u8f83\u65f6\u95f4\u95f4\u9694\u7684\u5927\u5c0f\u3002<\/li>\n<\/ul>\n
        \u6ce8\u610f\u4e8b\u9879<\/strong>
        \u4f7f\u7528 INTERVAL \u51fd\u6570\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n
          \n
        • \u4e24\u4e2a\u8f93\u5165\u503c\u5fc5\u987b\u662f\u517c\u5bb9\u7684\u65f6\u95f4\u6216\u65e5\u671f\u7c7b\u578b\uff08\u4f8b\u5982\uff0cDATE\u3001DATETIME\u3001TIMESTAMP\uff09\u3002<\/li>\n
        • \u7ed3\u679c\u7684\u65f6\u95f4\u95f4\u9694\u5c06\u4f7f\u7528\u8f93\u5165\u503c\u7684\u7cbe\u5ea6\uff08\u4f8b\u5982\uff0c\u5230\u5fae\u79d2\u6216\u6beb\u79d2\uff09\u3002<\/li>\n
        • INTERVAL \u51fd\u6570\u5728\u8ba1\u7b97\u8de8\u8d8a\u65f6\u533a\u8fb9\u754c\u7684\u65f6\u95f4\u95f4\u9694\u65f6\u53ef\u80fd\u4e0d\u51c6\u786e\u3002<\/li>\n<\/ul>\n
          \u4ee5\u4e0a\u5c31\u662fsql\u4e2d\u7684interval\u51fd\u6570\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":"
          interval \u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u65f6\u95f4\u503c\u4e4b\u95f4\u7684\u5dee\u503c\uff0c\u8fd4\u56de\u7279\u5b9a\u65f6\u95f4\u95f4\u9694\u5185\u7684\u7ed3\u679c\u3002\u7528\u6cd5\uff1a interval\uff08\u65f6\u95f4\u95f4\u9694\u5355\u4f4d \u65f6\u95f4\u95f4\u9694\uff09\uff0c\u5176\u4e2d\u65f6\u95f4\u95f4\u9694\u5355\u4f4d\u5305\u62ec day\u3001hour\u3001minute \u7b49\u3002 SQL \u4e2d INTERVAL \u51fd\u6570\u7684\u7528\u6cd5 \u5f15\u8a00INTERVAL \u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u6216\u65f6\u95f4\u503c\u4e4b\u95f4\u7684\u5dee\u503c\uff0c\u5e76\u4ee5\u7279\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\uff08\u4f8b\u5982\u5929\u3001\u5c0f\u65f6\u6216\u5206\u949f\uff09\u8fd4\u56de\u7ed3\u679c\u3002 \u8bed\u6cd5 INTERVAL (quantity INTERVAL unit) \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a quantity \u662f\u8981\u8ba1\u7b97\u5dee\u503c\u7684\u65f6\u95f4\u95f4\u9694\u3002 unit \u662f\u8981\u4f7f\u7528\u7684\u95f4\u9694\u5355\u4f4d\uff08\u4f8b\u5982\uff0cDAY\u3001HOUR\u3001MINUTE\uff09\u3002 \u4f7f\u7528\u65b9\u6cd5INTERVAL \u51fd\u6570\u6709\u4e24\u4e2a\u53c2\u6570\uff1a from_date\uff1a\u7b2c\u4e00\u4e2a\u65e5\u671f\u6216\u65f6\u95f4\u503c\u3002 to_date\uff1a\u7b2c\u4e8c\u4e2a\u65e5\u671f\u6216\u65f6\u95f4\u503c\u3002 \u793a\u4f8b\u4ee5\u4e0b\u793a\u4f8b\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\uff08’2023-01-01′ \u548c ‘2023-01-15’\uff09\u4e4b\u95f4\u7684\u5929\u6570\u5dee\uff1a SELECT INTERVAL ‘2023-01-15’ – ‘2023-01-01′ DAY; \u767b\u5f55\u540e\u590d\u5236 \u7ed3\u679c\uff1a 14 \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0b\u793a\u4f8b\u8ba1\u7b97\u4e24\u4e2a\u65f6\u95f4\uff08’12:00:00′ \u548c ’14:30:00’\uff09\u4e4b\u95f4\u7684\u5206\u949f\u5dee\uff1a SELECT INTERVAL ’14:30:00′ – ’12:00:00′ MINUTE; \u767b\u5f55\u540e\u590d\u5236 \u7ed3\u679c\uff1a 150 \u767b\u5f55\u540e\u590d\u5236 \u5176\u4ed6\u7528\u9014\u9664\u4e86\u8ba1\u7b97\u65f6\u95f4\u5dee\u4e4b\u5916\uff0cINTERVAL \u51fd\u6570\u8fd8\u53ef\u4ee5\u7528\u4e8e\uff1a […]<\/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-5191","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5191","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=5191"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5191\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}