{"id":5710,"date":"2024-11-14T11:25:18","date_gmt":"2024-11-14T03:25:18","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5710\/"},"modified":"2024-11-14T11:25:18","modified_gmt":"2024-11-14T03:25:18","slug":"sql%e9%80%9a%e9%85%8d%e7%ac%a6%e6%80%8e%e4%b9%88%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5710\/","title":{"rendered":"sql\u901a\u914d\u7b26\u600e\u4e48\u8bbe\u7f6e"},"content":{"rendered":"

\n \u5728 sql \u4e2d\uff0c\u901a\u914d\u7b26\u7528\u4e8e\u67e5\u627e\u5339\u914d\u7279\u5b9a\u6a21\u5f0f\u7684\u6570\u636e\uff0c\u5b83\u4eec\u5305\u62ec\uff1a\u767e\u5206\u53f7 (%)\uff1a\u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u4e0b\u5212\u7ebf (_)\uff1a\u5339\u914d\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u65b9\u62ec\u53f7 ([ ])\uff1a\u5305\u542b\u5b57\u7b26\u7c7b\uff0c\u5339\u914d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u5355\u4e2a\u5b57\u7b26\u3002\u8131\u5b57\u7b26 (^)\uff1a\u5426\u5b9a\u5b57\u7b26\u7c7b\uff0c\u5339\u914d\u4e0d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u5355\u4e2a\u5b57\u7b26\u3002\n<\/p><\/blockquote>\n

\"sql\u901a\u914d\u7b26\u600e\u4e48\u8bbe\u7f6e\u63d2\u56fe\"<\/p>\n

SQL \u901a\u914d\u7b26\u8bbe\u7f6e<\/strong><\/p>\n

\u5728 SQL \u4e2d\uff0c\u901a\u914d\u7b26\u7528\u4e8e\u67e5\u627e\u5339\u914d\u7279\u5b9a\u6a21\u5f0f\u7684\u6570\u636e\u3002\u5b83\u4eec\u662f\u7279\u6b8a\u7684\u5b57\u7b26\uff0c\u53ef\u4ee5\u4ee3\u66ff\u5b57\u7b26\u4e32\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u8bbe\u7f6e SQL \u901a\u914d\u7b26\uff1a<\/p>\n

\u767e\u5206\u53f7 (%)\uff1a<\/strong><\/p>\n

\u767e\u5206\u53f7\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n

SELECT * FROM table_name WHERE column_name LIKE '%abc%';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8fd9\u5c06\u8fd4\u56de\u6240\u6709\u5305\u542b “abc” \u5b57\u7b26\u4e32\u7684\u8bb0\u5f55\uff0c\u65e0\u8bba\u5176\u4f4d\u7f6e\u5982\u4f55\u3002<\/p>\n
\u4e0b\u5212\u7ebf (_)\uff1a<\/strong><\/p>\n
\u4e0b\u5212\u7ebf\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT * FROM table_name WHERE column_name LIKE '_abc';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8fd9\u5c06\u8fd4\u56de\u6240\u6709\u4ee5 “abc” \u5f00\u5934\u7684\u8bb0\u5f55\u3002<\/p>\n
\u65b9\u62ec\u53f7 ([ ])\uff1a<\/strong><\/p>\n
\u65b9\u62ec\u53f7\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u7c7b\uff0c\u5339\u914d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT * FROM table_name WHERE column_name LIKE '[ab]';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8fd9\u5c06\u8fd4\u56de\u5305\u542b “a” \u6216 “b” \u5b57\u7b26\u7684\u4efb\u4f55\u8bb0\u5f55\u3002<\/p>\n
\u8131\u5b57\u7b26 (^)\uff1a<\/strong><\/p>\n
\u8131\u5b57\u7b26\u7528\u4e8e\u5426\u5b9a\u5b57\u7b26\u7c7b\u3002\u5b83\u5339\u914d\u4e0d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT * FROM table_name WHERE column_name NOT LIKE '[^ab]';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8fd9\u5c06\u8fd4\u56de\u4e0d\u5305\u542b “a” \u6216 “b” \u5b57\u7b26\u7684\u4efb\u4f55\u8bb0\u5f55\u3002<\/p>\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n
\u4ee5\u4e0b\u67e5\u8be2\u67e5\u627e\u5305\u542b “John”\u3001”Jane” \u6216 “Jack” \u4e2d\u4efb\u4f55\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u8bb0\u5f55\uff1a<\/p>\n
SELECT * FROM table_name WHERE column_name LIKE '%(John|Jane|Jack)%';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4ee5\u4e0b\u67e5\u8be2\u67e5\u627e\u4ee5 “J” \u5f00\u5934\u4e14\u5305\u542b “o” \u5b57\u7b26\u7684\u4efb\u4f55\u8bb0\u5f55\uff1a<\/p>\n
SELECT * FROM table_name WHERE column_name LIKE '[J]%o%';<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
\u901a\u914d\u7b26\u7684\u4f7f\u7528\u53ef\u80fd\u4f1a\u964d\u4f4e\u67e5\u8be2\u6027\u80fd\u3002\u5728\u53ef\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u5efa\u8bae\u4f7f\u7528\u7d22\u5f15\u5217\u6765\u4f18\u5316\u67e5\u8be2\u3002\u53e6\u5916\uff0c\u8bf7\u52a1\u5fc5\u6ce8\u610f\u901a\u914d\u7b26\u7684\u5339\u914d\u89c4\u5219\uff0c\u5e76\u8c28\u614e\u4f7f\u7528\u5b83\u4eec\uff0c\u4ee5\u907f\u514d\u610f\u5916\u7ed3\u679c\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fsql\u901a\u914d\u7b26\u600e\u4e48\u8bbe\u7f6e\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":"
\u5728 sql \u4e2d\uff0c\u901a\u914d\u7b26\u7528\u4e8e\u67e5\u627e\u5339\u914d\u7279\u5b9a\u6a21\u5f0f\u7684\u6570\u636e\uff0c\u5b83\u4eec\u5305\u62ec\uff1a\u767e\u5206\u53f7 (%)\uff1a\u5339\u914d\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u4e0b\u5212\u7ebf (_)\uff1a\u5339\u914d\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u65b9\u62ec\u53f7 ([ ])\uff1a\u5305\u542b\u5b57\u7b26\u7c7b\uff0c\u5339\u914d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u5355\u4e2a\u5b57\u7b26\u3002\u8131\u5b57\u7b26 (^)\uff1a\u5426\u5b9a\u5b57\u7b26\u7c7b\uff0c\u5339\u914d\u4e0d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u5355\u4e2a\u5b57\u7b26\u3002 SQL \u901a\u914d\u7b26\u8bbe\u7f6e \u5728 SQL \u4e2d\uff0c\u901a\u914d\u7b26\u7528\u4e8e\u67e5\u627e\u5339\u914d\u7279\u5b9a\u6a21\u5f0f\u7684\u6570\u636e\u3002\u5b83\u4eec\u662f\u7279\u6b8a\u7684\u5b57\u7b26\uff0c\u53ef\u4ee5\u4ee3\u66ff\u5b57\u7b26\u4e32\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u8bbe\u7f6e SQL \u901a\u914d\u7b26\uff1a \u767e\u5206\u53f7 (%)\uff1a \u767e\u5206\u53f7\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u96f6\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a SELECT * FROM table_name WHERE column_name LIKE ‘%abc%’; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u8fd4\u56de\u6240\u6709\u5305\u542b “abc” \u5b57\u7b26\u4e32\u7684\u8bb0\u5f55\uff0c\u65e0\u8bba\u5176\u4f4d\u7f6e\u5982\u4f55\u3002 \u4e0b\u5212\u7ebf (_)\uff1a \u4e0b\u5212\u7ebf\u5339\u914d\u5b57\u7b26\u4e32\u4e2d\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a SELECT * FROM table_name WHERE column_name LIKE ‘_abc’; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u8fd4\u56de\u6240\u6709\u4ee5 “abc” \u5f00\u5934\u7684\u8bb0\u5f55\u3002 \u65b9\u62ec\u53f7 ([ ])\uff1a \u65b9\u62ec\u53f7\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u7c7b\uff0c\u5339\u914d\u5c5e\u4e8e\u8be5\u7c7b\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a SELECT * FROM table_name WHERE column_name […]<\/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-5710","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5710","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=5710"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5710\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}