<\/span><\/h2>\n\n\n\nNTILE(num) OVER([PARTITION BY col_name1,col_name2,\u2026] ORDER BY col_name1 [asc\/desc], col_name2 [asc\/desc],\u2026)<\/code><\/pre>\n\n\n\n<\/span>\u8bf4\u660e<\/span><\/h2>\n\n\n\nnum\u53c2\u6570\u662f\u6307\u5b9a\u5207\u6210\u51e0\u5757\u3002 \u7b2c\u4e00\u5757\u503c\u4e3a1\uff0c\u7b2c\u4e8c\u5757\u4e3a2\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002<\/p>\n\n\n\n
\u5982\u679c\u4e00\u4e2a\u7a97\u53e3\u5185\u7684\u6570\u636e\uff0c\u65e0\u6cd5\u5747\u5300\u7684\u5206\u6210\u6307\u5b9a\u5757\u6570\uff0c\u5219\u4f18\u5148\u586b\u5145\u524d\u9762\u7684\u3002<\/p>\n\n\n\n
<\/span>\u6837\u4f8b<\/span><\/h2>\n\n\n\n<\/span>\u6570\u636e<\/span><\/h3>\n\n\n\ngbase> create table td(id int, type int,val decimal(20,3));\r\nQuery OK, 0 rows affected (Elapsed: 00:00:00.17)\r\n\r\ngbase> insert into td values(1,1,111),(1,1,222),(2,1,333),(2,2,444),(3,2,555),(3,2,666),(4,2,777);\r\nQuery OK, 7 rows affected (Elapsed: 00:00:00.12)\r\nRecords: 7 Duplicates: 0 Warnings: 0\r\n\r\ngbase> insert into td values(5,1,null),(50,2,null);\r\nQuery OK, 2 rows affected (Elapsed: 00:00:00.09)\r\nRecords: 2 Duplicates: 0 Warnings: 0\r\n\r\ngbase> select * from td;\r\n+------+------+---------+\r\ngbase> select * from td order by type;\r\n+------+------+---------+\r\n| id | type | val |\r\n+------+------+---------+\r\n| 1 | 1 | 222.000 |\r\n| 2 | 1 | 333.000 |\r\n| 5 | 1 | NULL |\r\n| 1 | 1 | 111.000 |\r\n| 3 | 2 | 666.000 |\r\n| 4 | 2 | 777.000 |\r\n| 3 | 2 | 555.000 |\r\n| 2 | 2 | 444.000 |\r\n| 50 | 2 | NULL |\r\n+------+------+---------+\r\n9 rows in set (Elapsed: 00:00:00.04)\r\n\r\n<\/code><\/pre>\n\n\n\n<\/span>\u6807\u51c6NTILE\u7528\u6cd5<\/span><\/h3>\n\n\n\ntype=2\u91cc\u67095\u4e2a\uff0c\u5206\u4e0d\u5747\u5300\uff0c\u5206\u57571\u4e3a3\u4e2a\uff0c\u5206\u57572\u4e3a2\u4e2a\u3002<\/p>\n\n\n\n
gbase> select *,ntile(2)over(partition by type order by id) maxOfType from td;\r\n+------+------+---------+-----------+\r\n| id | type | val | maxOfType |\r\n+------+------+---------+-----------+\r\n| 1 | 1 | 111.000 | 1 |\r\n| 1 | 1 | 222.000 | 1 |\r\n| 2 | 1 | 333.000 | 2 |\r\n| 2 | 2 | 444.000 | 1 |\r\n| 3 | 2 | 555.000 | 1 |\r\n| 3 | 2 | 666.000 | 1 |\r\n| 4 | 2 | 777.000 | 2 |\r\n| 5 | 1 | NULL | 2 |\r\n| 50 | 2 | NULL | 2 |\r\n+------+------+---------+-----------+\r\n9 rows in set (Elapsed: 00:00:00.35)\r\n\r\n<\/code><\/pre>\n\n\n\n<\/span>\u65e0partition\u7684NTILE<\/span><\/h3>\n\n\n\n\u6240\u6709\u6570\u636e\u5206\u62102\u5757\u3002<\/p>\n\n\n\n
gbase> select *,ntile(2)over(order by id) maxOfType from td;\r\n+------+------+---------+-----------+\r\n| id | type | val | maxOfType |\r\n+------+------+---------+-----------+\r\n| 1 | 1 | 111.000 | 1 |\r\n| 1 | 1 | 222.000 | 1 |\r\n| 2 | 1 | 333.000 | 1 |\r\n| 2 | 2 | 444.000 | 1 |\r\n| 3 | 2 | 555.000 | 1 |\r\n| 3 | 2 | 666.000 | 2 |\r\n| 4 | 2 | 777.000 | 2 |\r\n| 5 | 1 | NULL | 2 |\r\n| 50 | 2 | NULL | 2 |\r\n+------+------+---------+-----------+\r\n9 rows in set (Elapsed: 00:00:00.08)\r\n<\/code><\/pre>\n\n\n\n<\/span>\u65e0order\u7684NTILE<\/span><\/h3>\n\n\n\n\u81ea\u7136\u987a\u5e8f\uff0c\u4e0d\u4fdd\u8bc1\u6bcf\u6b21\u76f8\u540c\u3002<\/p>\n\n\n\n
gbase> select *,ntile(2)over(partition by type) maxOfType from td;\r\n+------+------+---------+-----------+\r\n| id | type | val | maxOfType |\r\n+------+------+---------+-----------+\r\n| 1 | 1 | 111.000 | 2 |\r\n| 1 | 1 | 222.000 | 1 |\r\n| 2 | 1 | 333.000 | 1 |\r\n| 2 | 2 | 444.000 | 2 |\r\n| 3 | 2 | 555.000 | 1 |\r\n| 3 | 2 | 666.000 | 1 |\r\n| 4 | 2 | 777.000 | 1 |\r\n| 5 | 1 | NULL | 2 |\r\n| 50 | 2 | NULL | 2 |\r\n+------+------+---------+-----------+\r\n9 rows in set (Elapsed: 00:00:00.07)\r\n<\/code><\/pre>\n\n\n\n<\/span>\u65e0Partition\u548corder\u7684NTILE<\/span><\/h3>\n\n\n\ngbase> select *,ntile(2)over() maxOfType from td;\r\n+------+------+---------+-----------+\r\n| id | type | val | maxOfType |\r\n+------+------+---------+-----------+\r\n| 1 | 1 | 111.000 | 1 |\r\n| 1 | 1 | 222.000 | 1 |\r\n| 2 | 1 | 333.000 | 1 |\r\n| 2 | 2 | 444.000 | 1 |\r\n| 3 | 2 | 555.000 | 1 |\r\n| 3 | 2 | 666.000 | 2 |\r\n| 4 | 2 | 777.000 | 2 |\r\n| 5 | 1 | NULL | 2 |\r\n| 50 | 2 | NULL | 2 |\r\n+------+------+---------+-----------+\r\n9 rows in set (Elapsed: 00:00:00.29)\r\n<\/code><\/pre>","protected":false},"excerpt":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u7684NTILE\u51fd\u6570\uff0c\u5c06\u6570\u636e\u5207\u5206\u6210\u6307\u5b9a\u7684\u51e0\u5757\uff0c\u5982\u679c\u4e14\u4e0d\u5747\u5300\uff0c\u5219\u524d\u9762\u7684\u4f18\u5148\u3002\u672c\u6587\u4ecb\u7ecdNTILE\u7684\u7528\u6cd5\u548c\u4f7f\u7528\u6837\u4f8b\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[36,77],"class_list":["post-12489","post","type-post","status-publish","format-standard","hentry","category-gbase8a","tag-36","tag-olap"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/12489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=12489"}],"version-history":[{"count":1,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/12489\/revisions"}],"predecessor-version":[{"id":12490,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/12489\/revisions\/12490"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=12489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=12489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=12489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}