{"id":5380,"date":"2020-07-30T00:03:28","date_gmt":"2020-07-29T16:03:28","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5380"},"modified":"2020-07-30T00:03:28","modified_gmt":"2020-07-29T16:03:28","slug":"mysql-8-0-%e7%aa%97%e5%8f%a3%e5%87%bd%e6%95%b0window-functions","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5380","title":{"rendered":"MySQL 8.0 \u7a97\u53e3\u51fd\u6570(window functions)"},"content":{"rendered":"<div>\n<h2>\u4e00\u3001\u7a97\u53e3\u51fd\u6570\u7b80\u4ecb<\/h2>\n<\/div>\n<div>\n<div>\n\u7a97\u53e3\u51fd\u6570(window functions)\u662f\u6570\u636e\u5e93\u7684\u6807\u51c6\u529f\u80fd\u4e4b\u4e00\uff0c\u4e3b\u6d41\u7684\u6570\u636e\u5e93\u6bd4\u5982Oracle\uff0cPostgreSQL\u90fd\u652f\u6301\u7a97\u53e3\u51fd\u6570\u529f\u80fd\uff0cMySQL \u76f4\u5230 8.0 \u7248\u672c\u624d\u5f00\u59cb\u652f\u6301\u7a97\u53e3\u51fd\u6570\u3002<br \/>\n\u7a97\u53e3\u51fd\u6570\uff0c\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u5bf9\u4e8e\u4e00\u4e2a\u67e5\u8be2SQL\uff0c\u5c06\u5176\u7ed3\u679c\u96c6\u6309\u6307\u5b9a\u7684\u89c4\u5219\u8fdb\u884c\u5206\u533a\uff0c\u6bcf\u4e2a\u5206\u533a\u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u4e2a\u7a97\u53e3\uff0c\u5206\u533a\u5185\u7684\u6bcf\u4e00\u884c\uff0c\u6839\u636e\u5176\u6240\u5c5e\u5206\u533a\u5185\u7684\u884c\u6570\u636e\u8fdb\u884c\u51fd\u6570\u8ba1\u7b97\uff0c\u83b7\u53d6\u8ba1\u7b97\u7ed3\u679c\uff0c\u4f5c\u4e3a\u8be5\u884c\u7684\u7a97\u53e3\u51fd\u6570\u7ed3\u679c\u503c\u3002<br \/>\n\u7a97\u53e3\u51fd\u6570\u4e0egroup\u805a\u5408\u67e5\u8be2\u7c7b\u4f3c\uff0c\u90fd\u662f\u5bf9\u4e00\u7ec4\uff08\u5206\u533a\uff09\u8bb0\u5f55\u8fdb\u884c\u8ba1\u7b97\uff0c\u533a\u522b\u5728\u4e8egroup\u5bf9\u4e00\u7ec4\u8bb0\u5f55\u8ba1\u7b97\u540e\u8fd4\u56de\u4e00\u6761\u8bb0\u5f55\u4f5c\u4e3a\u7ed3\u679c\uff0c\u800c\u7a97\u53e3\u51fd\u6570\u5bf9\u4e00\u7ec4\u8bb0\u5f55\u8ba1\u7b97\u540e\uff0c\u8fd9\u7ec4\u8bb0\u5f55\u4e2d\u6bcf\u6761\u6570\u636e\u90fd\u4f1a\u5bf9\u5e94\u4e00\u4e2a\u7ed3\u679c\u3002<br \/>\n\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<pre>mysql&gt; SELECT\n         year, country, product, profit,\n         SUM(profit) OVER() AS total_profit,\n         SUM(profit) OVER(PARTITION BY country) AS country_profit\n       FROM sales\n       ORDER BY country, year, product, profit;\n+------+---------+------------+--------+--------------+----------------+\n| year | country | product    | profit | total_profit | country_profit |\n+------+---------+------------+--------+--------------+----------------+\n| 2000 | Finland | Computer   |   1500 |         7535 |           1610 |\n| 2000 | Finland | Phone      |    100 |         7535 |           1610 |\n| 2001 | Finland | Phone      |     10 |         7535 |           1610 |\n| 2000 | India   | Calculator |     75 |         7535 |           1350 |\n| 2000 | India   | Calculator |     75 |         7535 |           1350 |\n| 2000 | India   | Computer   |   1200 |         7535 |           1350 |\n| 2000 | USA     | Calculator |     75 |         7535 |           4575 |\n| 2000 | USA     | Computer   |   1500 |         7535 |           4575 |\n| 2001 | USA     | Calculator |     50 |         7535 |           4575 |\n| 2001 | USA     | Computer   |   1200 |         7535 |           4575 |\n| 2001 | USA     | Computer   |   1500 |         7535 |           4575 |\n| 2001 | USA     | TV         |    100 |         7535 |           4575 |\n| 2001 | USA     | TV         |    150 |         7535 |           4575 |\n+------+---------+------------+--------+--------------+----------------+\n<\/pre>\n<p>\u67e5\u8be2SQL\u901a\u8fc7 OVER \u5b50\u53e5\u6765\u6807\u8bb0\u7a97\u53e3\uff0cOVER \u5b50\u53e5\u4e2d\u7684\u5185\u5bb9\u53ef\u4ee5\u6307\u5b9a\u7a97\u53e3\u5206\u533a\u7684\u65b9\u6cd5\u3002<br \/>\n\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\uff0c\u7b2c\u4e00\u4e2a OVER \u5b50\u53e5\u4e2d\u7684\u53c2\u6570\u4e3a\u7a7a\uff0c\u5219\u5c06\u6574\u4e2a\u67e5\u8be2\u7ed3\u679c\u96c6\u4f5c\u4e3a\u4e00\u4e2a\u5355\u4e00\u7684\u5206\u533a\uff0c\u5206\u533a\u5185\u7684\u6bcf\u6761\u8bb0\u5f55\u7684\u7a97\u53e3\u51fd\u6570\u8ba1\u7b97\u7ed3\u679c\u4e3a\u6574\u4e2a\u5206\u533a\u5185\u7684\u5b57\u6bb5\u503c\u6c42\u548c\u3002<br \/>\n\u7b2c\u4e8c\u4e2a OVER\u5b50 \u53e5\u4f7f\u7528 country \u5b57\u6bb5\u4f5c\u4e3a\u53c2\u6570\uff0c\u5bf9\u67e5\u8be2\u7ed3\u679c\u96c6\u8fdb\u884c\u5206\u533a\uff0c\u6309\u7167 country \u5206\u533a\uff0c\u5206\u533a\u5185\u6c42\u548c\uff0c\u4f5c\u4e3a\u8be5\u5206\u533a\u5185\u6bcf\u6761\u8bb0\u5f55\u7684\u7a97\u53e3\u51fd\u6570\u8ba1\u7b97\u7ed3\u679c\u3002<\/p>\n<h4>\u4e8c\u3001\u7a97\u53e3\u51fd\u6570\u8bed\u6cd5<\/h4>\n<pre>over_clause:\n    {OVER (window_spec) | OVER window_name}\nwindow_spec:\n    [window_name] [partition_clause] [order_clause] [frame_clause]\npartition_clause:\n    PARTITION BY expr [, expr] ...\norder_clause:\n    ORDER BY expr [ASC|DESC] [, expr [ASC|DESC]] ...\n<\/pre>\n<ul>\n<li>\u5982\u679c OVER() \u5b50\u53e5\u91cc\u9762\u7684\u5185\u5bb9\u4e3a\u7a7a\uff0c\u5219\u7a97\u53e3\u5927\u5c0f\u4e3a\u6574\u4e2a\u67e5\u8be2\u7684\u7ed3\u679c\u96c6\uff0c\u4f7f\u7528\u7ed3\u679c\u96c6\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u8ba1\u7b97\u7ed3\u679c\u3002<\/li>\n<li>\u5982\u679c OVER() \u5b50\u53e5\u91cc\u9762\u7684\u5185\u5bb9\u4e0d\u4e3a\u7a7a\uff0c\u5219\u4f7f\u7528\u91cc\u9762\u6307\u5b9a\u7684\u7a97\u53e3\u5206\u533a\u89c4\u5219\u3001\u6392\u5e8f\u89c4\u5219\u5bf9\u5206\u533a\u5185\u7684\u8bb0\u5f55\u8fdb\u884c\u5206\u533a\u548c\u6392\u5e8f\u3002<\/li>\n<li>partition_clause\uff0c\u6307\u5b9a\u5982\u4f55\u5bf9\u67e5\u8be2\u7ed3\u679c\u96c6\u8fdb\u884c\u5206\u533a\uff0c\u7a97\u53e3\u51fd\u6570\u57fa\u4e8e\u5206\u533a\u5185\u7684\u8bb0\u5f55\u8fdb\u884c\u8ba1\u7b97\uff0c\u5982\u679c\u6ca1\u6709\u6307\u5b9a partition_clause \u5b50\u53e5\uff0c\u5219\u5bf9\u6574\u4e2a\u67e5\u8be2\u7ed3\u679c\u96c6\u6570\u636e\u8fdb\u884c\u8ba1\u7b97\u3002SQL\u6807\u51c6\u8981\u6c42 PARTITION BY \u540e\u9762\u53ea\u80fd\u8ddf\u5b57\u6bb5\u540d\uff0cMySQL\u6269\u5c55\u652f\u6301\u8868\u8fbe\u5f0f\uff0c\u6bd4\u5982ts\u5b57\u6bb5\u4e3aTIMESTAMP\u7c7b\u578b\uff0c\u53ef\u4ee5\u8fd9\u6837\u4f7f\u7528PARTITION BY HOUR(ts)\u3002<\/li>\n<li>order_clause\uff0c\u53ef\u9009\uff0c\u540e\u9762\u53ef\u4ee5\u8ddf ASC\u00a0\u6216\u8005\u00a0DESC \u6307\u5b9a\u6392\u5e8f\u65b9\u5411\u3002order by \u5b50\u53e5\u5bf9\u5206\u533a\u5185\u7684\u8bb0\u5f55\u8fdb\u884c\u6392\u5e8f\u3002<\/li>\n<li>frame_clause\uff0c\u8868\u793a\u5f53\u524d\u5206\u533a\u7684\u4e00\u4e2a\u5b50\u96c6\uff0cframe_clause \u6307\u5b9a\u4e86\u5b9a\u4e49\u5f53\u524d\u5206\u533a\u5b50\u96c6\u7684\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<h4>\u4e09\u3001\u547d\u540d\u7684\u7a97\u53e3<\/h4>\n<p>\u7a97\u53e3\u51fd\u6570\u7684\u7a97\u53e3\u80fd\u591f\u4f7f\u7528\u6307\u5b9a\u7684\u540d\u79f0\u6765\u5b9a\u4e49\uff0c\u7136\u540e\u53ef\u4ee5\u5728 OVER \u5b50\u53e5\u4e2d\u4f7f\u7528\u6307\u5b9a\u7684\u540d\u79f0\u6765\u5f15\u7528\u7a97\u53e3\u3002<br \/>\n\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u672a\u4f7f\u7528\u547d\u540d\u7a97\u53e3\u7684\u7a97\u53e3\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT\n  val,\n  ROW_NUMBER() OVER (ORDER BY val) AS \\'row_number\\',\n  RANK()       OVER (ORDER BY val) AS \\'rank\\',\n  DENSE_RANK() OVER (ORDER BY val) AS \\'dense_rank\\'\nFROM numbers;\n<\/pre>\n<p>\u4f7f\u7528\u547d\u540d\u7a97\u53e3\u6539\u5199\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre>SELECT\n  val,\n  ROW_NUMBER() OVER w AS \\'row_number\\',\n  RANK()       OVER w AS \\'rank\\',\n  DENSE_RANK() OVER w AS \\'dense_rank\\'\nFROM numbers\nWINDOW w AS (ORDER BY val);\n<\/pre>\n<p>\u4f7f\u7528\u547d\u540d\u7684\u7a97\u53e3\uff0cSQL\u66f4\u52a0\u6e05\u6670\u3001\u7b80\u6d01\uff0c\u66f4\u5bb9\u6613\u6d4b\u8bd5\u7a97\u53e3\u7684\u5b9a\u4e49\uff0c\u5982\u679c\u8981\u4fee\u6539\u7a97\u53e3\u7684\u5b9a\u4e49\uff0c\u53ea\u9700\u8981\u4fee\u6539WINDOW\u5b50\u53e5\uff0c\u800c\u4e0d\u5fc5\u6bcf\u4e2aOVER\u5b50\u53e5\u90fd\u4fee\u6539\u3002<\/p>\n<h4>\u56db\u3001\u975e\u805a\u5408\u7c7b\u7a97\u53e3\u51fd\u6570<\/h4>\n<p>MySQL\u652f\u6301\u7684\u975e\u805a\u5408\u7c7b\u7a97\u53e3\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>CUME_DIST()<\/li>\n<li>DENSE_RANK()<\/li>\n<li>FIRST_VALUE() LAG()<\/li>\n<li>LAST_VALUE()<\/li>\n<li>LEAD() NTH_VALUE()<\/li>\n<li>NTILE()<\/li>\n<li>PERCENT_RANK()<\/li>\n<li>RANK() \uff0c<\/li>\n<li>ROW_NUMBER()<\/li>\n<\/ul>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u901a\u8fc7ROW_NUMBER()\u51fd\u6570\uff0c\u8ba1\u7b97\u6bcf\u6761\u8bb0\u5f55\u5728\u5176\u6240\u5728\u5206\u533a\u5185\u7684\u884c\u53f7\u3002\u9ed8\u8ba4\u6761\u4ef6\u4e0b\uff0c\u5206\u533a\u5185\u7684\u8bb0\u5f55\u662f\u672a\u6392\u5e8f\u7684\uff0c\u56e0\u6b64\u884c\u53f7\u4e5f\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u53ef\u4ee5\u4f7f\u7528 order by \u5b50\u53e5\u5bf9\u7a97\u53e3\u51fd\u6570\u5b9a\u4e49\u7684\u5206\u533a\u5185\u7684\u6570\u636e\u96c6\u8fdb\u884c\u6392\u5e8f\u3002\u4e0b\u9762\u4f8b\u5b50 row_num1\u00a0\u672a\u6392\u5e8f\uff0crow_num2 \u6392\u5e8f\u3002<\/p>\n<pre>mysql&gt; SELECT\n         year, country, product, profit,\n         ROW_NUMBER() OVER(PARTITION BY country) AS row_num1,\n         ROW_NUMBER() OVER(PARTITION BY country ORDER BY year, product) AS row_num2\n       FROM sales;\n+------+---------+------------+--------+----------+----------+\n| year | country | product    | profit | row_num1 | row_num2 |\n+------+---------+------------+--------+----------+----------+\n| 2000 | Finland | Computer   |   1500 |        2 |        1 |\n| 2000 | Finland | Phone      |    100 |        1 |        2 |\n| 2001 | Finland | Phone      |     10 |        3 |        3 |\n| 2000 | India   | Calculator |     75 |        2 |        1 |\n| 2000 | India   | Calculator |     75 |        3 |        2 |\n| 2000 | India   | Computer   |   1200 |        1 |        3 |\n| 2000 | USA     | Calculator |     75 |        5 |        1 |\n| 2000 | USA     | Computer   |   1500 |        4 |        2 |\n| 2001 | USA     | Calculator |     50 |        2 |        3 |\n| 2001 | USA     | Computer   |   1500 |        3 |        4 |\n| 2001 | USA     | Computer   |   1200 |        7 |        5 |\n| 2001 | USA     | TV         |    150 |        1 |        6 |\n| 2001 | USA     | TV         |    100 |        6 |        7 |\n+------+---------+------------+--------+----------+----------+\n<\/pre>\n<p>\u53e6\u5916\u4e00\u4e2a\u4f8b\u5b50\uff0cCUME_DIST() \u51fd\u6570\uff0c\u8ba1\u7b97\u5206\u533a\u5185\uff0c\u5c0f\u4e8e\u7b49\u4e8e\u5f53\u524d\u503c\u7684\u8bb0\u5f55\u6570\u5360\u5206\u533a\u5185\u603b\u8bb0\u5f55\u6570\u7684\u6bd4\u503c\uff0c\u53d6\u503c\u8303\u56f4\u4e3a0~1\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre>mysql&gt; SELECT\n         val,\n         ROW_NUMBER()   OVER w AS \\'row_number\\',\n         CUME_DIST()    OVER w AS \\'cume_dist\\',\n         PERCENT_RANK() OVER w AS \\'percent_rank\\'\n       FROM numbers\n       WINDOW w AS (ORDER BY val);\n+------+------------+--------------------+--------------+\n| val  | row_number | cume_dist          | percent_rank |\n+------+------------+--------------------+--------------+\n|    1 |          1 | 0.2222222222222222 |            0 |\n|    1 |          2 | 0.2222222222222222 |            0 |\n|    2 |          3 | 0.3333333333333333 |         0.25 |\n|    3 |          4 | 0.6666666666666666 |        0.375 |\n|    3 |          5 | 0.6666666666666666 |        0.375 |\n|    3 |          6 | 0.6666666666666666 |        0.375 |\n|    4 |          7 | 0.8888888888888888 |         0.75 |\n|    4 |          8 | 0.8888888888888888 |         0.75 |\n|    5 |          9 |                  1 |            1 |\n+------+------------+--------------------+--------------+\n<\/pre>\n<h4>\u4e94\u3001\u805a\u5408\u7c7b\u7a97\u53e3\u51fd\u6570<\/h4>\n<p>\u7a97\u53e3\u51fd\u6570\u7684 OVER \u5b50\u53e5\u53ef\u4ee5\u548c\u8bb8\u591a\u805a\u5408\u51fd\u6570\u4e00\u8d77\u4f7f\u7528\uff0c\u8fd9\u4e9b\u805a\u5408\u51fd\u6570\u52a0\u4e0a OVER \u5b50\u53e5\uff0c\u5c31\u662f\u7a97\u53e3\u51fd\u6570\uff0c\u5982\u679c\u4e0d\u52a0 OVER \u5b50\u53e5\uff0c\u5c31\u662f\u666e\u901a\u7684\u805a\u5408\u51fd\u6570\u3002\u652f\u6301\u7a97\u53e3\u51fd\u6570\u529f\u80fd\u7684\u805a\u5408\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>AVG()<\/li>\n<li>BIT_AND()<\/li>\n<li>BIT_OR()<\/li>\n<li>BIT_XOR()<\/li>\n<li>COUNT()<\/li>\n<li>JSON_ARRAYAGG()<\/li>\n<li>JSON_OBJECTAGG()<\/li>\n<li>MAX()<\/li>\n<li>MIN()<\/li>\n<li>STDDEV_POP(), STDDEV(), STD()<\/li>\n<li>STDDEV_SAMP()<\/li>\n<li>SUM()<\/li>\n<li>VAR_POP(), VARIANCE()<\/li>\n<li>VAR_SAMP()<\/li>\n<\/ul>\n<p>\u672c\u6587\u5f00\u5934\u7684\u7b2c\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5c31\u662f\u4f7f\u7528SUM()\u805a\u5408\u51fd\u6570\u505a\u7a97\u53e3\u8ba1\u7b97\u7684\uff0c\u53ef\u4ee5\u7ffb\u56de\u53bb\u770b\u4e00\u4e0b\u3002<\/p>\n<h4>\u516d\u3001\u7a97\u53e3\u51fd\u6570\u7684\u4f7f\u7528\u9650\u5236<\/h4>\n<p>SQL\u6807\u51c6\u52a0\u5728\u7a97\u53e3\u51fd\u6570\u4e0a\u7684\u4e00\u4e2a\u9650\u5236\u662f\u4e0d\u80fd\u7528\u4e8eupdate\u548cdelete\u8bed\u53e5\u6765\u66f4\u65b0\u884c\u8bb0\u5f55\u3002\u5728update\u548cdelete\u8bed\u53e5\u7684\u5b50\u67e5\u8be2\u4e2d\u4f7f\u7528\u7a97\u53e3\u51fd\u6570\u662f\u5141\u8bb8\u7684\u3002<\/p>\n<ul>\n<li>\u4e0d\u652f\u6301\u805a\u5408\u7a97\u53e3\u51fd\u6570\u7684 DISTINCT\u00a0\u8bed\u6cd5<\/li>\n<li>\u4e0d\u652f\u6301\u5d4c\u5957\u7684\u7a97\u53e3\u51fd\u6570<\/li>\n<li>\u4e0d\u652f\u6301\u4f9d\u8d56\u4e8e\u5f53\u524d\u884c\u503c\u7684\u52a8\u6001\u5e27\u7ed3\u675f\u70b9<\/li>\n<li>\u6307\u5b9a GROUPS\u00a0\u5e27\u5355\u5143\u80fd\u591f\u88ab\u89e3\u6790\uff0c\u4f46\u662f\u4f1a\u4ea7\u751f\u9519\u8bef\uff0c\u4ec5\u652f\u6301 ROWS\u00a0\u548c RANGE<\/li>\n<li>\u6307\u5b9a\u5e27\u7684 EXCLUDE\u00a0\u5b50\u53e5\u80fd\u591f\u88ab\u89e3\u6790\uff0c\u4f46\u662f\u4f1a\u4ea7\u751f\u9519\u8bef<\/li>\n<li>IGNORE NULLS \u5b50\u53e5\u80fd\u591f\u88ab\u89e3\u6790\uff0c\u4f46\u662f\u4f1a\u4ea7\u751f\u9519\u8bef\uff0c\u76ee\u524d\u53ea\u652f\u6301 RESPECT NULLS \u5b50\u53e5<\/li>\n<li>FROM LAST \u5b50\u53e5\u80fd\u591f\u88ab\u89e3\u6790\uff0c\u4f46\u662f\u4f1a\u4ea7\u751f\u9519\u8bef\uff0c\u76ee\u524d\u53ea\u652f\u6301 FROM FIRST \u5b50\u53e5<\/li>\n<\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u7a97\u53e3\u51fd\u6570\u7b80\u4ecb \u7a97\u53e3\u51fd\u6570(window functions)\u662f\u6570\u636e\u5e93\u7684\u6807\u51c6\u529f\u80fd\u4e4b\u4e00\uff0c\u4e3b\u6d41\u7684\u6570\u636e\u5e93\u6bd4\u5982Orac &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5380\"> <span class=\"screen-reader-text\">MySQL 8.0 \u7a97\u53e3\u51fd\u6570(window functions)<\/span> \u67e5\u770b\u5168\u6587 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\u7a97\u53e3\u51fd\u6570(window functions)\u662f\u6570\u636e\u5e93\u7684\u6807\u51c6\u529f\u80fd\u4e4b\u4e00\uff0c\u4e3b\u6d41\u7684\u6570\u636e\u5e93\u6bd4\u5982Orac&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5380"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5380"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5380\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5380"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}