要在使用Typeorm查询Postgres数据库时返回 ROW_NUMBER(),您可以使用QueryBuilder来构建自定义查询 假设您有一个名为 users 的表,包含 id, name 和age 字段。这个示例说明如何返回每个按年龄排序的用户行的行号: 首先,确保已安装必要的软件包: 代码语言:javascript 复制 npm install typeorm pg 在Typeorm实体文件(...
(5 rows) postgres=# select id,name,age,row_number() over(partition by name order by age) from test; id | name | age | row_number ---+---+---+--- 1 | 张三 | 12 | 1 2 | 张三 | 13 | 2 3 | 张三 | 14 | 3 3 | 张四 | 15 | 1 3 | 张四 | 16 | 2 (5 rows...
postgres=#selectsplit_part(c.a,',',1)asname, split_part(c.a,',',2)asage,row_number()over(partitionbyname)from(selectregexp_split_to_table(info,';')asafromtest1whereidin(1,2,4)) c; name|age|row_number---+---+---张三|12|1张三|13|2张三|14|3张十一|966|1张十一|19|2张...
postgres=#selectid,name,age,row_number() over(partition by name order by age)fromtest; id| name | age |row_number---+---+---+---1| 张三 |12|12| 张三 |13|23| 张三 |14|33| 张四 |15|13| 张四 |16|2(5rows) 特殊用法 postgres=#select*fromtest1whereidin(1,2,4); id|info...
postgres=#select*,row_number()over(orderbyscoredesc)rnfromstudent; id|name|course|score|rn---+---+---+---+---2|周润发|数学|99|113|黎明|外语|95|26|周星驰|语文|91|314|黎明|物理|90|41|周润发|语文|89|58|周星驰|外语|88|65|周润发|化学|87|711|黎明|语文|85|810|周星驰|化学|83|97...
postgres=#select*,row_number()over(orderbyscoredesc)rnfromstudent; id|name|course|score|rn---+---+---+---+---2|周润发|数学|99|113|黎明|外语|95|26|周星驰|语文|91|314|黎明|物理|90|41|周润发|语文|89|58|周星驰|外语|88|65|周润发|化学|87|711|黎明|语文|85|810|周星驰|化学|83|97...
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postgres=# select id,name,age,row_number() over(order by age) from test;id|name|age|row_number---+---+---+---3|张四|16|53|张三|14|33|张四|15|41|张三|12|12|张三|13|2(5rows) postgres=# select id,name,age,row_number() over(partition by name order by age) from test;id...
问Postgres中的ROW_NUMBER()EN我试图将ROW_NUMBER()添加到计算字段顶部的select查询中，并为唯一计算字段...
SELECT count(DISTINCT fee_date) as dis from new_order where news_id='novel' and order_status='2'这两个SQL执⾏所得到的数据是⼀样的！⼯具：postgreSQL 1.我们要清楚，sql的执⾏顺序：from语句->where语句->group by语句->having语句->order by语句->select 语句 2.row_number()分析函数 说...