{"id":850,"date":"2025-02-18T18:26:13","date_gmt":"2025-02-18T10:26:13","guid":{"rendered":"https:\/\/eve2333.top\/?p=850"},"modified":"2025-02-18T18:26:14","modified_gmt":"2025-02-18T10:26:14","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%85%a5%e9%97%a8%e5%88%b0%e5%a4%a7%e8%9b%87%e5%b0%9a%e7%a1%85%e8%b0%b7%e5%ae%8b%e7%ba%a2%e5%ba%b7%e8%80%81%e5%b8%88%e7%ac%94%e8%ae%b0-%e5%9f%ba%e7%a1%80%e7%af%87-pa-5","status":"publish","type":"post","link":"https:\/\/eve2333.top\/?p=850","title":{"rendered":"MySQL\u6570\u636e\u5e93\u5165\u95e8\u5230\u5927\u86c7\u5c1a\u7845\u8c37\u5b8b\u7ea2\u5eb7\u8001\u5e08\u7b14\u8bb0 \u57fa\u7840\u7bc7 part 8"},"content":{"rendered":"\n

 \u7b2c08\u7ae0_\u805a\u5408\u51fd\u6570<\/h1>\n\n\n\n

\u805a\u5408\u51fd\u6570\u4f5c\u7528\u4e8e\u4e00\u7ec4\u6570\u636e\uff0c\u5e76\u5bf9\u4e00\u7ec4\u6570\u636e\u8fd4\u56de\u4e00\u4e2a\u503c\u3002<\/p>\n\n\n\n

\"\"<\/p>\n\n\n\n

 1.1 AVG\u548cSUM\u51fd\u6570<\/p>\n\n\n\n

\u53ef\u4ee5\u5bf9\u6570\u503c\u578b\u6570\u636e\u4f7f\u7528AVG(\u5c31\u662f\u5e73\u5747) \u548c SUM (\u5c31\u662f\u603b\u548c)\u51fd\u6570\u3002<\/p>\n\n\n\n

SELECT AVG(salary), MAX(salary),MIN(salary), SUM(salary)\nFROM   employees\nWHERE  job_id LIKE '%REP%';\n\n#1.1 AVG \/SUM:\uff1a\u53ea\u9002\u7528\u4e8e\u6570\u503c\u7c7b\u578b\u7684\u5b57\u6bb5\uff08\u6216\u53d8\u91cf\uff09\nSELECT AVG(salary),SUM(salary),AVG(salary) * 107\nFROM employees;\n#\u5982\u4e0b\u7684\u64cd\u4f5c\u6ca1\u6709\u610f\u4e49\nSELECT SUM(last_name),AVG(last_name),SUM(hire_date)\nFROM employees;<\/code><\/pre>\n\n\n\n
1.2 MIN\u548cMAX\u51fd\u6570 \u53ef\u4ee5\u5bf9\u4efb\u610f\u6570\u636e\u7c7b\u578b\u7684\u6570\u636e\u4f7f\u7528 MIN \u548c MAX \u51fd\u6570\u3002 SELECT MIN(hire_date), MAX(hire_date) FROM employees;<\/p>\n\n\n\n
#1.2MAX\uff0fMIN\uff1a\u9002\u7528\u4e8e\u6570\u503c\u7c7b\u578b\u3001\u5b57\u7b26\u4e32\u7c7b\u578b\u3001\u65e5\u671f\u65f6\u95f4\u7c7b\u578b\u7684\u5b57\u6bb5\uff08\u6216\u53d8\u91cf\uff09\nSELECT MAX(salary),MIN(salary)\nFROM employees;\n\nSELECT MAX(last_name),MIN(last_name),MAX(hire_date),MIN(hire_date)\nFROM employees;<\/code><\/pre>\n\n\n\n
1.3 COUNT\u51fd\u6570 COUNT(*)\u8fd4\u56de\u8868\u4e2d\u8bb0\u5f55\u603b\u6570\uff0c\u9002\u7528\u4e8e\u4efb\u610f\u6570\u636e\u7c7b\u578b\u3002<\/p>\n\n\n\n
SELECT COUNT(*) \nFROM employees WHERE department_id = 50; \n\n#1.3 COUNT:\n\u2460\u4f5c\u7528\uff1a\u8ba1\u7b97\u6307\u5b9a\u5b57\u6bb5\u5728\u67e5\u8be2\u7ed3\u6784\u4e2d\u51fa\u73b0\u7684\u4e2a\u6570\nSELECT COUNT(employee_id),COUNT(salary),COUNT(2 * salary),COUNT(1),COUNT(2),COUNT(*)\nFROM employees;\n\nSELECT *\nFROM employees;<\/code><\/pre>\n\n\n\n
COUNT(expr) \u8fd4\u56deexpr\u4e0d\u4e3a\u7a7a\u7684\u8bb0\u5f55\u603b\u6570\u3002 SELECT COUNT(commission_pct) FROM   employees WHERE department_id = 50; <\/p>\n\n\n\n
#\u5982\u679c\u8ba1\u7b97\u8868\u4e2d\u6709\u591a\u5c11\u6761\u8bb0\u5f55\uff0c\u5982\u4f55\u5b9e\u73b0\uff1f\n#\u65b9\u5f0f1\uff1aCOUNT\uff08*\uff09\n#\u65b9\u5f0f2\uff1aCOUNT(1)\n#\u65b9\u5f0f3\uff1aCOUNT\uff08\u5177\u4f53\u5b57\u6bb5\uff09\uff1a\u4e0d\u4e00\u5b9a\u5bf9\uff01\n\n# \u6ce8\u610f\uff1a\u8ba1\u7b97\u6307\u5b9a\u5b57\u6bb5\u51fa\u73b0\u7684\u4e2a\u6570\u65f6\uff0c\u662f\u4e0d\u8ba1\u7b97NULL\u503c\u7684\u3002\nSELECT CoUNT(commission_pct)\nFROM employees;\n\nSELECT commission_pct\nFROM employees\nWHERE commission_pct IS NOT NULL;<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
\"\"\u8fd9\u4e9b\u5f97\u5230\u7684\u6570\u503c\u76f8\u540c\u5417\uff1f\u7ecf\u8fc7mysql\u90fd\u5f97\u5230\u4e86\u5f97\u52306461.682243\u7684\u6570\u00a0 \u00a0\u5373\u516c\u5f0f\uff1aAVG=SUM \/ COUNT<\/strong><\/p>\n\n\n\n
\n
\u95ee\u9898\uff1a\u7528count(*)\uff0ccount(1)\uff0ccount(\u5217\u540d)\u8c01\u597d\u5462\uff1f
\u5176\u5b9e\uff0c\u5bf9\u4e8eMyISAM\u5f15\u64ce\u7684\u8868\u662f\u6ca1\u6709\u533a\u522b\u7684\u3002\u8fd9\u79cd\u5f15\u64ce\u5185\u90e8\u6709\u4e00\u8ba1\u6570\u5668\u5728\u7ef4\u62a4\u7740\u884c\u6570\u3002
Innodb\u5f15\u64ce\u7684\u8868\u7528count(*),count(1)\u76f4\u63a5\u8bfb\u884c\u6570\uff0c\u590d\u6742\u5ea6\u662fo(n)\uff0c\u56e0\u4e3ainnodb\u771f\u7684\u8981\u53bb\u6570\u4e00\u904d\u3002\u4f46\u597d\u4e8e\u5177\u4f53\u7684count(\u5217\u540d)\u3002<\/p>\n\n\n\n
\u95ee\u9898\uff1a\u80fd\u4e0d\u80fd\u4f7f\u7528count(\u5217\u540d\uff09\u66ff\u6362count(*)?
\u4e0d\u8981\u4f7f\u7528count(\u5217\u540d)\u6765\u66ff\u4ee3count\uff08\uff0a\uff09\uff0ccount\uff08*\uff09\u662fSQL92\u5b9a\u4e49\u7684\u6807\u51c6\u7edf\u8ba1\u884c\u6570\u7684\u8bed\u6cd5\uff0c\u8ddf\u6570\u636e\u5e93\u65e0\u5173\uff0c\u8ddfNULL\u548c\u975eNULL\u65e0\u5173\u3002
\u8bf4\u660e\uff1acount(*)\u4f1a\u7edf\u8ba1\u503c\u4e3aNULL\u7684\u884c\uff0c\u800ccount(\u5217\u540d)\u4e0d\u4f1a\u7edf\u8ba1\u6b64\u5217\u4e3aNULL\u503c\u7684\u884c\u3002 <\/p>\n<\/blockquote>\n\n\n\n
#\u9700\u6c42\uff1a\u67e5\u8be2\u516c\u53f8\u4e2d\u5e73\u5747\u5956\u91d1\u7387\n#\u9519\u8bef\u7684\uff01\nSELECT AVG(commission_pct)\nFROM employees;\n\n#\u6b63\u786e\u7684\uff1a\nSELECT SUM(commission_pct)\/ COUNT(IFNULL(commission_pct,0))\nFROM employees;<\/code><\/pre>\n\n\n\n
\n
\u8fd9\u4e2a\u5728\u9ad8\u7ea7\u7bc7\u7684\u7b2c7\u7ae0\u4f1a\u8be6\u7ec6\u8bf4\u660e
\u5982\u4f55\u9700\u8981\u7edf\u8ba1\u8868\u4e2d\u7684\u8bb0\u5f55\u6570\uff0c\u4f7f\u7528COUNT\uff08*\uff09\u3001COUNT\uff081)\u3001COUNT\uff08\u5177\u4f53\u5b57\u6bb5\uff09\u54ea\u4e2a\u6548\u7387\u66f4\u9ad8\u5462\uff1f
\u5982\u679c\u4f7f\u7528\u7684\u662fMyISAM\u5b58\u50a8\u5f15\u64ce\uff0c\u5219\u4e09\u8005\u6548\u7387\u76f8\u540c\uff0c\u90fd\u662fO(1\uff09
\u5982\u679c\u4f7f\u7528\u7684\u662fInnoDB\u5b58\u50a8\u5f15\u64ce\uff0c\u5219\u4e09\u8005\u6548\u7387\uff1aCOUNT\uff08*\uff09=COUNT\uff081)>COUNT\uff08\u5b57\u6bb5\uff09<\/p>\n<\/blockquote>\n\n\n\n
2. GROUP BY <\/h2>\n\n\n\n
\u53ef\u4ee5\u4f7f\u7528GROUP BY\u5b50\u53e5\u5c06\u8868\u4e2d\u7684\u6570\u636e\u5206\u6210\u82e5\u5e72\u7ec4<\/strong><\/p>\n\n\n\n
\u660e\u786e\uff1aWHERE\u4e00\u5b9a\u653e\u5728FROM\u540e\u9762<\/strong><\/p>\n\n\n\n
\u5728SELECT\u5217\u8868\u4e2d\u6240\u6709\u672a\u5305\u542b\u5728\u7ec4\u51fd\u6570\u4e2d\u7684\u5217\u90fd\u5e94\u8be5\u5305\u542b\u5728 GROUP BY\u5b50\u53e5\u4e2d<\/strong><\/p>\n\n\n\n
SELECT \u00a0 department_id, AVG(salary)\nFROM \u00a0 \u00a0 employees\nGROUP BY department_id ;\u00a0\n\n#\u9700\u6c42\uff1a\u67e5\u8be2\u5404\u4e2a\u90e8\u95e8\u7684\u5e73\u5747\u5de5\u8d44\uff0c\u6700\u9ad8\u5de5\u8d44\nSELECT department_id,AVG(salary),SUM(salary)\nFROM employees\nGROUP BY department_id\n\n#\u9700\u6c42\uff1a\u67e5\u8be2\u5404\u4e2ajob_id\u7684\u5e73\u5747\u5de5\u8d44\nSELECT job_id,AVG(salary)\nFROM employees\nGROUP BY job_id;<\/code><\/pre>\n\n\n\n
 \u90a3\u6211\u95ee\u4f60\uff0c\u4e0b\u9762\u8fd9\u4e24\u4e2a\u4e00\u6837\u5417\uff1f\uff1f\uff1f\uff1f\uff1f\u5b9e\u9645\u9700\u6c42\u6765\u8bf4\uff0c\u662f\u4e00\u6837\u7684\u3002<\/p>\n\n\n\n
#\u9700\u6c42\uff1a\u67e5\u8be2\u5404\u4e2adepartment_id,job_id\u7684\u5e73\u5747\u5de5\u8d44\nSELECT department_id,job_id,AVG(salary)\nFROM employees\nGROUP BY department_id,job_id;\n#\u6216\u8005\nSELECT job_id,department_id,AVG(salary)\nFROMemployees\nGROUP BY job_id,department_id;<\/code><\/pre>\n\n\n\n
\"\"<\/p>\n\n\n\n
#\u7ed3\u8bba1\uff1aSELECT\u4e2d\u51fa\u73b0\u7684\u975e\u7ec4\u51fd\u6570\u7684\u5b57\u6bb5\u5fc5\u987b\u58f0\u660e\u5728GROUPBY\u4e2d\u3002\n#             \u53cd\u4e4b\uff0cGROUPBY\u4e2d\u58f0\u660e\u7684\u5b57\u6bb5\u53ef\u4ee5\u4e0d\u51fa\u73b0\u5728SELECT\u4e2d\u3002\n#\u7ed3\u8bba2\uff1aGROUPBY\u58f0\u660e\u5728FROM\u540e\u9762\u3001WHERE\u540e\u9762\uff0cORDERBY\u524d\u9762\u3001LIMIT\u524d\u9762\n\u7ed3\u8bba3\uff1aMySQL\u4e2d GROUP BY\u4e2d\u4f7f\u7528WITH ROLLUP\n\nSELECT department_id,AVG(salary)\nFROM employees\nGROUP BY department_id WITH ROLLUP\uff1b<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
#\u9700\u6c42\uff1a\u67e5\u8be2\u5404\u4e2a\u90e8\u95e8\u7684\u5e73\u5747\u5de5\u8d44\uff0c\u6309\u7167\u5e73\u5747\u5de5\u8d44\u5347\u5e8f\u6392\u5217\nSELECT department_id,AVG(salary) avg_sal\nFROM employees\nGROUP BY department_id\nORDER BY avg_sal ASC;\n\n#\u8bf4\u660e\uff1a\u5f53\u4f7f\u7528ROLLUP\u65f6\uff0c\u4e0d\u80fd\u540c\u65f6\u4f7f\u7528ORDERBY\u5b50\u53e5\u8fdb\u884c\u7ed3\u679c\u6392\u5e8f\uff0c\u5373ROLLUP\u548cORDERBY\u662f\u4e92\u76f8\u6392\u65a5\u7684\u3002\n#\u9519\u8bef\u7684\uff1a\nSELECT department_id,AVG(salary) avg_sal\nFROM employees\nGROUP BY department_id WITH ROLLUP\nORDER BY avg_sal ASC; <\/code><\/pre>\n\n\n\n
\u4ece8.0\u5f00\u59cb\u662f\u6ca1\u62a5\u9519\uff0c\u771f\u7684\u6392\u5e8f\u4e86<\/strong>\u3002<\/p>\n\n\n\n
3. HAVING <\/h2>\n\n\n\n
\"\"\u200b<\/p>\n\n\n\n
\u8fc7\u6ee4\u5206\u7ec4\uff1aHAVING\u5b50\u53e5
1. \u884c\u5df2\u7ecf\u88ab\u5206\u7ec4\u3002
2. \u4f7f\u7528\u4e86\u805a\u5408\u51fd\u6570\u3002
3. \u6ee1\u8db3HAVING \u5b50\u53e5\u4e2d\u6761\u4ef6\u7684\u5206\u7ec4\u5c06\u88ab\u663e\u793a\u3002
4. HAVING \u4e0d\u80fd\u5355\u72ec\u4f7f\u7528\uff0c\u5fc5\u987b\u8981\u8ddf GROUP BY \u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n\n\n\n
#3.HAVING\u7684\u4f7f\u7528\uff08\u4f5c\u7528\uff1a\u7528\u6765\u8fc7\u6ee4\u6570\u636e\u7684\uff09\n\u7ec3\u4e60\uff1a\u67e5\u8be2\u5404\u4e2a\u90e8\u95e8\u4e2d\u6700\u9ad8\u5de5\u8d44\u6bd410000\u9ad8\u7684\u90e8\u95e8\u4fe1\u606f\n#\u9519\u8bef\u7684\u5199\u6cd5\uff1a\nSELECT department_id,MAX(salary)\nFROM employees\nWHERE MAX(salary)> 10000\nGROUP BY department_id;\n\n#\u8981\u6c421\uff1a\u5982\u679c\u8fc7\u6ee4\u6761\u4ef6\u4e2d\u4f7f\u7528\u4e86\u805a\u5408\u51fd\u6570\uff0c\u5219\u5fc5\u987b\u4f7f\u7528HAVING\u6765\u66ff\u6362WHERE\u3002\u5426\u5219\uff0c\u62a5\u9519\u3002\n#\u8981\u6c422\uff1aHAVING\u5fc5\u987b\u58f0\u660e\u5728GROUPBY\u7684\u540e\u9762\u3002\n#\u6b63\u786e\u7684\u5199\u6cd5\uff1a\nSELECT department_id,MAX(salary)\nFROM employees\nGROUP BY department_id\nHAVING MAX(salary) > 10000;<\/code><\/pre>\n\n\n\n
\u597d\uff0c\u628aHAVING\u7684\u90a3\u53e5\u5220\u6389\uff0c\u90a3\u6211\u4eec\u9009\u4e2d\u5148\u6267\u884c\u4e00\u4e0b\uff0c\u5927\u5bb6\u4f1a\u53d1\u73b0\uff0c\u4e5f\u6ca1\u6709\u62a5\u9519\uff0c\u786e\u5b9e\u6ca1\u6709\u62a5\u9519\u3002\u90a3\u8fd9\u4e2amax\u5462\uff0c\u88ab\u4ee3\u8868\u7684\u5c31\u662f\u552f\u4e00\u7684\u8fd9\u4e00\u7ec4\uff0c\u5c31\u662f\u6574\u4e2a\u767e\u5458\u5de5\u8fd9\u4e00\u7ec4\u7684\u6700\u9ad8\u5de5\u8d44\u5462\uff0c\u786e\u5b9e\u662f2\u4e074\u3002\u90a3\u4e5f\u51fa\u6765\u4e00\u4e2a\u7ed3\u679c\u4e86\u3002\u4f46\u662f\u5462\uff0c\u6211\u60f3\u7ed9\u5927\u5bb6\u5f3a\u8c03\u4e00\u70b9\u5462\uff0c\u5c31\u662f\u5982\u679c\u8fd9\u79cd\u573a\u666f\u7684\u8bdd\u5462\uff0c\u6211\u4eec\u8fd9\u4e2a\u5728\u5bb6\u91cc\u5462\uff0c\u5176\u5b9e\u610f\u4e49\u5c31\u4e0d\u5927\u4e86\u554a\uff0c\u600e\u4e48\u8bb2\u5462\uff0c\u4f60\u60f3\u60f3\u54b1\u4eec\u8fd9\u4e2a\u7684\u8bdd\u5462\uff0c\u55ef\uff0c\u6211\u6362\u7ed9\u4ed6\u3002\u6765\u8bf4\uff0c\u4f60\u6bd4\u5982\u8bf4\u6211\u4eec\u73b0\u5728\u7684\u8fd9\u4e2a\u67e5\u8be2\u4e00\u4e2a\u8868\uff0c\u4e0d\u7ba1\u4f60\u662f\u67e5\u4ec0\u4e48\uff0c\u6700\u540e\u5462\uff0c\u6211\u4eec\u67e5\u51fa\u6765\u591a\u5c11\u8bb0\u5f55\u662f\u8fd9\u610f\u601d\u5427\uff1f\u90a3\u67e5\u8be2\u6761\u8bb0\u5f55\u4ee5\u540e\u5462\uff0c\u6211\u4eec\u52a0\u4e2aV\uff0c\u8bf4\u6211\u53ea\u60f3\u8981\u8fd9\u91cc\u8fb9\u7684\u67d0\u51e0\u5f20\uff0c\u8bf4\u8fd9\u5f20\u8fd8\u662f\u8fd9\u5f20\uff0c\u4f60\u8fd9\u5757\u52a0\u4e2a\u6761\u4ef6\u53bb\u8fc7\u6ee4\u5c31\u884c\u4e86\uff0c\u662f\u8fd9\u610f\u601d\u662f\u5427\uff1f\u90a3\u73b0\u5728\u5982\u679c\u8bf4\u6211\u8fd9\u8868\u4e0a\u67e5\u8be2\u6765\u5c31\u8fd9\u4e00\u6761\u8bb0\u5f55\u4e86\uff0c\u6211\u4eec\u5176\u5b9e\u5c31\u6ca1\u6709\u5fc5\u8981\u975e\u5f97\u518d\u53bb\u8fc7\u6ee4\u5b83\uff0c\u90a3\u4f60\u770b\u4e00\u4e0b\u8fd9\u4e2a\u662f\u4e0d\u6ee1\u8db3\u5c31\u884c\uff0c\u90a3\u653e\u5230\u6211\u8fd9\u5757\u5c31\u662f\u3002\u6211\u4eec\u6709\u4e86\u5916\u4e4b\u540e\u5462\uff0c\u6211\u4eec\u53bb\u5206\u7ec4\u5462\uff0c\u662f\u4e0d\u662f\u9996\u5148\u6709\u53ef\u80fd\u4f1a\u6709\u591a\u4e2a\u7ec4\uff1f\u7136\u540e\u5462\uff0c\u4f60\u518d\u770b\u4e00\u4e0b\u8fd9\u4e2a\u54ea\u4e2a\u7ec4\u5462\uff0c\u662f\u6ee1\u8db3\u4f60\u7684\u4f01\u8981\u6c42\u7684\u662f\u8fd9\u610f\u601d\u5427\uff1f\u662f\u5427\uff0c\u90a3\u5c31\u6709\u5206\u7ec4\u3002\u90a3\u5982\u679c\u8981\u6ca1\u6709\u5206\u7ec4\u7684\u8bdd\u5462\uff0c\u662f\u4e0d\u662f\u5c31\u53ea\u6709\u4e00\u7ec4\u554a\uff1f\u90a3\u8fd9\u65f6\u5019\u6211\u4eec\u518d\u770b\u8fd9\u4e2a\u5462\uff0c\u5176\u5b9e\u610f\u4e49\u5c31\u4e0d\u5927\u3002<\/p>\n\n\n\n
\u975e\u6cd5\u4f7f\u7528\u805a\u5408\u51fd\u6570 \uff1a \u4e0d\u80fd\u5728 WHERE \u5b50\u53e5\u4e2d\u4f7f\u7528\u805a\u5408\u51fd\u6570\u3002\u5982\u4e0b\uff1a\n\nSELECT   department_id, AVG(salary)\nFROM     employees\nWHERE    AVG(salary) > 8000\nGROUP BY department_id;<\/code><\/pre>\n\n\n\n
<\/p>\n\n\n\n
#\u7ec3\u4e60\uff1a\u67e5\u8be2\u90e8\u95e8id\u4e3a10\uff0c20\uff0c30\uff0c40\u8fd94\u4e2a\u90e8\u4e2d\u6700\u9ad8\u5de5\u8d44\u6bd410000\u9ad8\u7684\u90e8\u95e8\u4fe1\u606f\n#\u65b9\u5f0f1\uff1a\nSELECT department_id,MAX(salary)\nFROM employees\nWHERE department_id IN (10,20,30,40)\nGROUP BY department_id\nHAVING MAX(salary) > 10000;\n\n#\u65b9\u5f0f2\uff1a\nSELECT department_id,MAX(salary)\nFROM employees\nGROUP BY department_id\nHAVING MAX(salary)>10000 AND department_id IN (10,20,30,40);<\/code><\/pre>\n\n\n\n
 \u65b9\u5f0f\u4e00\u6548\u7387\u9ad8\u4e8e\u65b9\u5f0f\u4e8c<\/strong><\/p>\n\n\n\n
#\u7ed3\u8bba\uff1a\u5f53\u8fc7\u6ee4\u6761\u4ef6\u4e2d\u6709\u805a\u5408\u51fd\u6570\u65f6\uff0c\u5219\u6b64\u8fc7\u6ee4\u6761\u4ef6\u5fc5\u987b\u58f0\u660e\u5728HAVING\u4e2d\u3002
#      \u5f53\u8fc7\u6ee4\u6761\u4ef6\u4e2d\u6ca1\u6709\u805a\u5408\u51fd\u6570\u65f6\uff0c\u5219\u6b64\u8fc7\u6ee4\u6761\u4ef6\u58f0\u660e\u5728WHERE\u4e2d\u6216HAVING\u4e2d\u90fd\u53ef\u4ee5\u3002\u4f46\u662f\uff0c\u5efa\u8bae\u5927\u5bb6\u58f0\u660e\u5728WHERE\u4e2d\u3002<\/p>\n\n\n\n
\/*  WHERE \u4e0e HAVING \u7684\u5bf9\u6bd4
1. \u4ece\u9002\u7528\u8303\u56f4\u4e0a\u6765\u8bb2\uff0cHAVING\u7684\u9002\u7528\u8303\u56f4\u66f4\u5e7f\u3002
2. \u5982\u679c\u8fc7\u6ee4\u6761\u4ef6\u4e2d\u6ca1\u6709\u805a\u5408\u51fd\u6570\uff1a\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cWHERE\u7684\u6267\u884c\u6548\u7387\u8981\u9ad8\u4e8eHAVING*\/<\/p>\n\n\n\n
\n
3.2 WHERE\u548cHAVING\u7684\u5bf9\u6bd4<\/strong><\/p>\n\n\n\n
\u533a\u522b1\uff1aWHERE \u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8868\u4e2d\u7684\u5b57\u6bb5\u4f5c\u4e3a\u7b5b\u9009\u6761\u4ef6\uff0c\u4f46\u4e0d\u80fd\u4f7f\u7528\u5206\u7ec4\u4e2d\u7684\u8ba1\u7b97\u51fd\u6570\u4f5c\u4e3a\u7b5b\u9009\u6761\u4ef6\uff1b HAVING \u5fc5\u987b\u8981\u4e0e GROUP BY \u914d\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u628a\u5206\u7ec4\u8ba1\u7b97\u7684\u51fd\u6570\u548c\u5206\u7ec4\u5b57\u6bb5\u4f5c\u4e3a\u7b5b\u9009\u6761\u4ef6\u3002<\/strong><\/p>\n\n\n\n
\u8fd9\u51b3\u5b9a\u4e86\uff0c\u5728\u9700\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4\u7edf\u8ba1\u7684\u65f6\u5019\uff0cHAVING \u53ef\u4ee5\u5b8c\u6210 WHERE \u4e0d\u80fd\u5b8c\u6210\u7684\u4efb\u52a1\u3002\u8fd9\u662f\u56e0\u4e3a\uff0c \u5728\u67e5\u8be2\u8bed\u6cd5\u7ed3\u6784\u4e2d\uff0cWHERE \u5728 GROUP BY \u4e4b\u524d\uff0c\u6240\u4ee5\u65e0\u6cd5\u5bf9\u5206\u7ec4\u7ed3\u679c\u8fdb\u884c\u7b5b\u9009\u3002HAVING \u5728 GROUP BY \u4e4b \u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u5206\u7ec4\u5b57\u6bb5\u548c\u5206\u7ec4\u4e2d\u7684\u8ba1\u7b97\u51fd\u6570\uff0c\u5bf9\u5206\u7ec4\u7684\u7ed3\u679c\u96c6\u8fdb\u884c\u7b5b\u9009\uff0c\u8fd9\u4e2a\u529f\u80fd\u662f WHERE \u65e0\u6cd5\u5b8c\u6210 \u7684\u3002\u53e6\u5916\uff0cWHERE\u6392\u9664\u7684\u8bb0\u5f55\u4e0d\u518d\u5305\u62ec\u5728\u5206\u7ec4\u4e2d\u3002<\/p>\n\n\n\n
\u533a\u522b2\uff1a\u5982\u679c\u9700\u8981\u901a\u8fc7\u8fde\u63a5\u4ece\u5173\u8054\u8868\u4e2d\u83b7\u53d6\u9700\u8981\u7684\u6570\u636e\uff0cWHERE \u662f\u5148\u7b5b\u9009\u540e\u8fde\u63a5\uff0c\u800c HAVING \u662f\u5148\u8fde\u63a5 \u540e\u7b5b\u9009\u3002 \u8fd9\u4e00\u70b9\uff0c\u5c31\u51b3\u5b9a\u4e86\u5728\u5173\u8054\u67e5\u8be2\u4e2d\uff0cWHERE \u6bd4 HAVING \u66f4\u9ad8\u6548<\/strong>\u3002<\/p>\n\n\n\n
\u56e0\u4e3a WHERE \u53ef\u4ee5\u5148\u7b5b\u9009\uff0c\u7528\u4e00 \u4e2a\u7b5b\u9009\u540e\u7684\u8f83\u5c0f\u6570\u636e\u96c6\u548c\u5173\u8054\u8868\u8fdb\u884c\u8fde\u63a5\uff0c\u8fd9\u6837\u5360\u7528\u7684\u8d44\u6e90\u6bd4\u8f83\u5c11\uff0c\u6267\u884c\u6548\u7387\u4e5f\u6bd4\u8f83\u9ad8\u3002HAVING \u5219\u9700\u8981 \u5148\u628a\u7ed3\u679c\u96c6\u51c6\u5907\u597d\uff0c\u4e5f\u5c31\u662f\u7528\u672a\u88ab\u7b5b\u9009\u7684\u6570\u636e\u96c6\u8fdb\u884c\u5173\u8054\uff0c\u7136\u540e\u5bf9\u8fd9\u4e2a\u5927\u7684\u6570\u636e\u96c6\u8fdb\u884c\u7b5b\u9009\uff0c\u8fd9\u6837\u5360\u7528 \u7684\u8d44\u6e90\u5c31\u6bd4\u8f83\u591a\uff0c\u6267\u884c\u6548\u7387\u4e5f\u8f83\u4f4e\u3002<\/p>\n\n\n\n
WHERE<\/td>HAVING<\/td><\/tr>
\u5148\u7b5b\u9009\u6570\u636e\u518d\u5173\u8054\uff0c\u6267\u884c\u6548\u7387\u9ad8<\/td>\u53ef\u4ee5\u4f7f\u7528\u5206\u7ec4\u4e2d\u7684\u8ba1\u7b97\u51fd\u6570<\/td><\/tr>
\u4e0d\u80fd\u4f7f\u7528\u5206\u7ec4\u4e2d\u7684\u8ba1\u7b97\u51fd\u6570\u8fdb\u884c\u7b5b\u9009<\/td>\u5728\u6700\u540e\u7684\u7ed3\u679c\u96c6\u4e2d\u8fdb\u884c\u7b5b\u9009\uff0c\u6267\u884c\u6548\u7387\u8f83\u4f4e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
WHERE \u548c HAVING \u4e5f\u4e0d\u662f\u4e92\u76f8\u6392\u65a5\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4e00\u4e2a\u67e5\u8be2\u91cc\u9762\u540c\u65f6\u4f7f\u7528 WHERE \u548c HAVING\u3002\u5305\u542b\u5206\u7ec4 \u7edf\u8ba1\u51fd\u6570\u7684\u6761\u4ef6\u7528 HAVING\uff0c\u666e\u901a\u6761\u4ef6\u7528 WHERE\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u65e2\u5229\u7528\u4e86 WHERE \u6761\u4ef6\u7684\u9ad8\u6548\u5feb\u901f\uff0c\u53c8\u53d1 \u6325\u4e86 HAVING \u53ef\u4ee5\u4f7f\u7528\u5305\u542b\u5206\u7ec4\u7edf\u8ba1\u51fd\u6570\u7684\u67e5\u8be2\u6761\u4ef6\u7684\u4f18\u70b9\u3002\u5f53\u6570\u636e\u91cf\u7279\u522b\u5927\u7684\u65f6\u5019\uff0c\u8fd0\u884c\u6548\u7387\u4f1a\u6709\u5f88 \u5927\u7684\u5dee\u522b\u3002<\/p>\n<\/blockquote>\n\n\n\n
4.1 \u67e5\u8be2\u7684\u7ed3\u6784<\/h2>\n\n\n\n
#sql92\u8bed\u6cd5:\nSELECT \u2026\u2026\uff08\u5b58\u5728\u805a\u5408\u51fd\u6570\uff09\nFROM \u2026\u2026\nWHERE \u591a\u8868\u7684\u8fde\u63a5\u6761\u4ef6 AND \u4e0d\u5305\u542b\u805a\u5408\u51fd\u6570\u7684\u8fc7\u6ee4\u6761\u4ef6\nGROUP BY \u2026\u2026\nHAVING \u5305\u542b\u805a\u5408\u51fd\u6570\u7684\u8fc7\u6ee4\u6761\u4ef6\nORDER BY \u2026\u2026\uff08ASC \/ DESC\uff09\nLIMIT \u2026\u2026\n\n#sql99\u8bed\u6cd5:\nSELECT \u2026\u2026\uff08\u5b58\u5728\u805a\u5408\u51fd\u6570\uff09\nFROM \u2026\uff08LEFT \/ RIGHT\uff09JOIN \u2026 ON \u591a\u8868\u7684\u8fde\u63a5\u6761\u4ef6\n\uff08LEFT \/ RIGHT\uff09JOIN \u2026 ON \u2026\nWHERE \u4e0d\u5305\u542b\u805a\u5408\u51fd\u6570\u7684\u8fc7\u6ee4\u6761\u4ef6\nGROUP BY \u2026\u2026\nHAVING \u5305\u542b\u805a\u5408\u51fd\u6570\u7684\u8fc7\u6ee4\u6761\u4ef6\nORDER BY \u2026\u2026\uff08ASC \/ DESC\uff09\nLIMIT \u2026\u2026<\/code><\/pre>\n\n\n\n
4.2 SQL\u6267\u884c\u987a\u5e8f<\/h2>\n\n\n\n
\u4e0d\u662f\u4ece\u4e0a\u5f80\u4e0b\u7684\u987a\u5e8f\uff0c\u662f\u6709\u4e00\u5957\u72ec\u7279\u7684\u987a\u5e8f\u3002<\/p>\n\n\n\n
FROM -> WHERE -> GROUP BY -> HAVING -> SELECT \u7684\u5b57\u6bb5 -> DISTINCT -> ORDER BY -> LIMIT<\/strong><\/p>\n\n\n\n
\u6bd4\u5982\u4f60\u5199\u4e86\u4e00\u4e2a SQL \u8bed\u53e5\uff0c\u90a3\u4e48\u5b83\u7684\u5173\u952e\u5b57\u987a\u5e8f\u548c\u6267\u884c\u987a\u5e8f\u662f\u4e0b\u9762\u8fd9\u6837\u7684\uff1a\n\nSELECT DISTINCT player_id, player_name, count(*) as num    # \u987a\u5e8f 5\nFROM player JOIN team ON player.team_id = team.team_id     # \u987a\u5e8f 1\nWHERE height > 1.80                                        # \u987a\u5e8f 2\nGROUP BY player.team_id                                    # \u987a\u5e8f 3\nHAVING num > 2                                             # \u987a\u5e8f 4\nORDER BY num DESC                                          # \u987a\u5e8f 6\nLIMIT 2                                                    # \u987a\u5e8f 7\n\n\u5728 SELECT \u8bed\u53e5\u6267\u884c\u8fd9\u4e9b\u6b65\u9aa4\u7684\u65f6\u5019\uff0c\u6bcf\u4e2a\u6b65\u9aa4\u90fd\u4f1a\u4ea7\u751f\u4e00\u4e2a\n\u865a\u62df\u8868\uff0c\u7136\u540e\u5c06\u8fd9\u4e2a\u865a\u62df\u8868\u4f20\u5165\u4e0b\u4e00\u4e2a\u6b65\n\u9aa4\u4e2d\u4f5c\u4e3a\u8f93\u5165\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e9b\u6b65\u9aa4\u9690\u542b\u5728 SQL \u7684\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\n\u5bf9\u4e8e\u6211\u4eec\u6765\u8bf4\u662f\u4e0d\u53ef\u89c1\u7684\u3002<\/code><\/pre>\n\n\n\n
 \u6bd4\u598210w\u6761\u6570\u636e\uff0c\u6309\u7167\u8fd9\u4e2a\u987a\u5e8f\u5c31\u5f88\u6076\u5fc3\u4e86\uff0c\u6240\u4ee5\u8981\u907f\u514d\u67d0\u4e9b\u8bed\u53e5\u7684\u4f7f\u7528\u3002<\/p>\n\n\n\n
4.3 SQL \u7684\u6267\u884c\u539f\u7406<\/h2>\n\n\n\n
 SELECT\u662f\u5148\u6267\u884cFROM\u8fd9\u4e00\u6b65\u7684\u3002\u5728\u8fd9\u4e2a\u9636\u6bb5\uff0c\u5982\u679c\u662f\u591a\u5f20\u8868\u8054\u67e5\uff0c\u8fd8\u4f1a\u7ecf\u5386\u4e0b\u9762\u7684\u51e0\u4e2a\u6b65\u9aa4\uff1a
1\uff0e\u9996\u5148\u5148\u901a\u8fc7CROSS JOIN\u6c42\u7b1b\u5361\u5c14\u79ef\uff0c\u76f8\u5f53\u4e8e\u5f97\u5230\u865a\u62df\u8868vt\uff08virtual table\uff091-1;
2\uff0e\u901a\u8fc7ON\u8fdb\u884c\u7b5b\u9009\uff0c\u5728\u865a\u62df\u8868vt1-1\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u7b5b\u9009\uff0c\u5f97\u5230\u865a\u62df\u8868vt1-2;
3\uff0e\u6dfb\u52a0\u5916\u90e8\u884c\u3002\u5982\u679c\u6211\u4eec\u4f7f\u7528\u7684\u662f\u5de6\u8fde\u63a5\u3001\u53f3\u94fe\u63a5\u6216\u8005\u5168\u8fde\u63a5\uff0c\u5c31\u4f1a\u6d89\u53ca\u5230\u5916\u90e8\u884c\uff0c\u4e5f\u5c31\u662f\u5728\u865a\u62df\u8868vt1-2\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u5916\u90e8\u884c\uff0c\u5f97\u5230\u865a\u62df\u8868vt1-3\u3002
\u5f53\u7136\u5982\u679c\u6211\u4eec\u64cd\u4f5c\u7684\u662f\u4e24\u5f20\u4ee5\u4e0a\u7684\u8868\uff0c\u8fd8\u4f1a\u91cd\u590d\u4e0a\u9762\u7684\u6b65\u9aa4\uff0c\u76f4\u5230\u6240\u6709\u8868\u90fd\u88ab\u5904\u7406\u5b8c\u4e3a\u6b62\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u5f97\u5230\u662f\u6211\u4eec\u7684\u539f\u59cb\u6570\u636e\u3002
\u5f53\u6211\u4eec\u62ff\u5230\u4e86\u67e5\u8be2\u6570\u636e\u8868\u7684\u539f\u59cb\u6570\u636e\uff0c\u4e5f\u5c31\u662f\u6700\u7ec8\u7684\u865a\u62df\u8868Vt1\uff0c\u5c31\u53ef\u4ee5\u5728\u6b64\u57fa\u7840\u4e0a\u518d\u8fdbWHERE\u9636\u6bb5\u3002\u5728\u8fd9\u4e2a\u9636\u6bb5\u4e2d\uff0c\u4f1a\u6839\u636evt1\u8868\u7684\u7ed3\u679c\u8fdb\u884c\u7b5b\u9009\u8fc7\u6ee4\uff0c\u5f97\u5230\u865a\u62df\u8868vt2\u3002
\u7136\u540e\u8fdb\u5165\u7b2c\u4e09\u6b65\u548c\u7b2c\u56db\u6b65\uff0c\u4e5f\u5c31\u662fGROUP\u548cHAVING\u9636\u6bb5\u3002\u5728\u8fd9\u4e2a\u9636\u6bb5\u4e2d\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u865a\u62df\u8868Vt2\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u5206\u7ec4\u548c\u5206\u7ec4\u8fc7\u6ee4\uff0c\u5f97\u5230\u4e2d\u95f4\u7684\u865a\u62df\u8868vt3\u548cvt4\u3002
\u5f53\u6211\u4eec\u5b8c\u6210\u4e86\u6761\u4ef6\u7b5b\u9009\u90e8\u5206\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u7b5b\u9009\u8868\u4e2d\u63d0\u53d6\u7684\u5b57\u6bb5\uff0c\u4e5f\u5c31\u662f\u8fdb\u5165\u5230SELECTDISTINCT\u9636\u6bb5\u3002
\u9996\u5148\u5728SELECT\u9636\u6bb5\u4f1a\u63d0\u53d6\u60f3\u8981\u7684\u5b57\u6bb5\uff0c\u7136\u540e\u5728DISTINCT\u9636\u6bb5\u8fc7\u6ee4\u6389\u91cd\u590d\u7684\u884c\uff0c\u5206\u522b\u5f97\u5230\u4e2d\u95f4\u7684\u865a\u62df\u8868vt5-1\u548cvt5-2\u3002
\u5f53\u6211\u4eec\u63d0\u53d6\u4e86\u60f3\u8981\u7684\u5b57\u6bb5\u6570\u636e\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u6309\u7167\u6307\u5b9a\u7684\u5b57\u6bb5\u8fdb\u884c\u6392\u5e8f\uff0c\u4e5f\u5c31\u662fORDERBY\u9636\u6bb5\uff0c\u5f97\u5230\u865a\u62df\u8868vt6\u3002
\u6700\u540e\u5728vt6\u7684\u57fa\u7840\u4e0a\uff0c\u53d6\u51fa\u6307\u5b9a\u884c\u7684\u8bb0\u5f55\uff0c\u4e5f\u5c31\u662fLIMIT\u9636\u6bb5\uff0c\u5f97\u5230\u6700\u7ec8\u7684\u7ed3\u679c\uff0c\u5bf9\u5e94\u7684\u662f\u865a\u62df\u8868
vt7\u3002
\u5f53\u7136\u6211\u4eec\u5728\u5199SELECT\u8bed\u53e5\u7684\u65f6\u5019\uff0c\u4e0d\u4e00\u5b9a\u5b58\u5728\u6240\u6709\u7684\u5173\u952e\u5b57\uff0c\u76f8\u5e94\u7684\u9636\u6bb5\u5c31\u4f1a\u7701\u7565\u3002
\u540c\u65f6\u56e0\u4e3aSQL\u662f\u4e00\u95e8\u7c7b\u4f3c\u82f1\u8bed\u7684\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u5199SELECT\u8bed\u53e5\u7684\u65f6\u5019\uff0c\u8fd8\u8981\u6ce8\u610f\u76f8\u5e94\u7684\u5173\u952e\u5b57\u987a\u5e8f\uff0c\u6240\u8c13\u5e95\u5c42\u8fd0\u884c\u7684\u539f\u7406\uff0c\u5c31\u662f\u6211\u4eec\u521a\u624d\u8bb2\u5230\u7684\u6267\u884c\u987a\u5e8f\u3002<\/p>\n\n\n\n
 \u8bfe\u540e\u7ec3\u4e60<\/h2>\n\n\n\n
\u3010\u9898\u76ee\u3011<\/p>\n\n\n\n
#1.where\u5b50\u53e5\u53ef\u5426\u4f7f\u7528\u7ec4\u51fd\u6570\u8fdb\u884c\u8fc7\u6ee4?
#2.\u67e5\u8be2\u516c\u53f8\u5458\u5de5\u5de5\u8d44\u7684\u6700\u5927\u503c\uff0c\u6700\u5c0f\u503c\uff0c\u5e73\u5747\u503c\uff0c\u603b\u548c
#3.\u67e5\u8be2\u5404job_id\u7684\u5458\u5de5\u5de5\u8d44\u7684\u6700\u5927\u503c\uff0c\u6700\u5c0f\u503c\uff0c\u5e73\u5747\u503c\uff0c\u603b\u548c
#4.\u9009\u62e9\u5177\u6709\u5404\u4e2ajob_id\u7684\u5458\u5de5\u4eba\u6570
# 5.\u67e5\u8be2\u5458\u5de5\u6700\u9ad8\u5de5\u8d44\u548c\u6700\u4f4e\u5de5\u8d44\u7684\u5dee\u8ddd\uff08DIFFERENCE\uff09
# 6.\u67e5\u8be2\u5404\u4e2a\u7ba1\u7406\u8005\u624b\u4e0b\u5458\u5de5\u7684\u6700\u4f4e\u5de5\u8d44\uff0c\u5176\u4e2d\u6700\u4f4e\u5de5\u8d44\u4e0d\u80fd\u4f4e\u4e8e6000\uff0c\u6ca1\u6709\u7ba1\u7406\u8005\u7684\u5458\u5de5\u4e0d\u8ba1\u7b97\u5728\u5185
# 7.\u67e5\u8be2\u6240\u6709\u90e8\u95e8\u7684\u540d\u5b57\uff0clocation_id\uff0c\u5458\u5de5\u6570\u91cf\u548c\u5e73\u5747\u5de5\u8d44\uff0c\u5e76\u6309\u5e73\u5747\u5de5\u8d44\u964d\u5e8f
# 8.\u67e5\u8be2\u6bcf\u4e2a\u5de5\u79cd\u3001\u6bcf\u4e2a\u90e8\u95e8\u7684\u90e8\u95e8\u540d\u3001\u5de5\u79cd\u540d\u548c\u6700\u4f4e\u5de5\u8d44<\/p>\n\n\n\n
\u90a3\u4e2awith rollup\u548cgroup by\u7684\u4e92\u65a5\u57285.7\u548c8.0\u4e0d\u4e00\u6837\u54e6<\/strong> \u200b<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
 \u7b2c08\u7ae0_\u805a\u5408\u51fd\u6570 \u805a\u5408\u51fd\u6570\u4f5c\u7528\u4e8e\u4e00\u7ec4\u6570\u636e\uff0c\u5e76\u5bf9\u4e00\u7ec4\u6570\u636e\u8fd4\u56de\u4e00\u4e2a\u503c\u3002  1.1 AVG\u548cSUM\u51fd\u6570 \u53ef\u4ee5\u5bf9\u6570 …<\/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":[2],"tags":[16],"class_list":["post-850","post","type-post","status-publish","format-standard","hentry","category-2","tag-sql"],"_links":{"self":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=850"}],"version-history":[{"count":1,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/850\/revisions"}],"predecessor-version":[{"id":851,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/850\/revisions\/851"}],"wp:attachment":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}