row-number

问题 The question seems to be easy but I found it really hard to be done in DAX. I'd like to get the current row number on my current context data. Same as ROW_NUMBER() in T-SQL. Any hints? Thanks in advance. 回答1: There is no such function. Closest you can get is to calculate rank based on sort-order, like: DEFINE MEASURE SomeTbl[ROW_NO] = SUMX(SomeTbl, RANKX(ALL(SomeTbl), SomeTbl[SortCol])) EVALUATE ADDCOLUMNS(SomeTbl, "ROW_NO", SomeTbl[ROW_NO]) Or if you can't use RANKX EVALUATE ADDCOLUMNS (

问题 I'm having trouble with something very similar to this question T-sql Reset Row number on Field Change The solution to this question is perfect, works fine. Except when I try with multiple other 'custno', it breaks down. What I mean by that: custno moddate who -------------------------------------------------- 581827 2012-11-08 08:38:00.000 EMSZC14 581827 2012-11-08 08:41:10.000 EMSZC14 581827 2012-11-08 08:53:46.000 EMSZC14 581827 2012-11-08 08:57:04.000 EMSZC14 581827 2012-11-08 08:58:35

问题 I have discovered this code in SAS that mimics the following window function in SQL server: ROW_NUMBER() OVER (PARTITION BY Var1,var2 ORDER BY var1, var2) = data want; set have by var1 var2; if first.var1 AND first.var2 then n=1; else n+1; run; "She's a beaut' Clark"... but, How does one mimic this operation: ROW_NUMBER() OVER (PARTITION BY Var1,var2 ORDER BY var1, var2 Desc) I've made sure I have before: PROC SORT DATA=WORK.TEST OUT=WORK.TEST; BY var1 DECENDING var2 ; RUN; data WORK.want;

问题 What is wrong with my SQL code? I tried to eliminate duplicate rows following this answer But I keep getting the following error: near "(": syntax error: SELECT rn = ROW_NUMBER() OVER ( Here is the SQL code: SELECT rn = ROW_NUMBER() OVER (PARTITION BY s.stop_id, s.stop_name ORDER BY s.stop_id, s.stop_name) FROM stops s I read somewhere that it has to do with SQL versions or the usage of sqlite3 ?? Here some additional information to the problem: I have the beginning table: table_beginning =

来源： https://stackoverflow.com/questions/21325930/feature-not-implemented-window-order-by

来源： https://stackoverflow.com/questions/21325930/feature-not-implemented-window-order-by

来源： https://stackoverflow.com/questions/21325930/feature-not-implemented-window-order-by

问题 I have table with string data like this: id | string_data 1 | red;green;blue 2 | orange 3 | purple;cyan And I need split string data to items with row numbers: id | num | item 1 | 1 | red 1 | 2 | green 1 | 3 | blue 2 | 1 | orange 3 | 1 | purple 3 | 2 | cyan I know regexp_split_to_table() but I have problem to combine it with row_number(). Does anybody know how to solve this? Thanks! 回答1: If you don't need a regex it's more efficient to use string_to_array() instead of regexp_split_to_table()

问题 I am using Microsoft SQL Server Management Studio 2008. I have data that looks like this: Client ID Value ------------------------------- 12345 Did Not Meet 12345 Did Not Meet 12345 Partially Met 12346 Partially Met 12346 Partially Met 12346 Partially Met 12347 Partially Met 12347 Partially Met 12347 Did Not Meet 12347 Met and I'd like the results to appear like this: Client ID Value1 Value2 Value3 Value4 12345 Did Not Meet Did Not Meet Partially Met NULL 12346 Partially Met Partially Met

问题 Is there any way to create column that will be increased and reset over primary key? Example: Table A ([Code], [Type], [Line No_]) Primary key is ([Code], [Type]) And when I add a new row, I want to auto generate [Line No_] like this: Code Type Line No_ ----------------------- 'U1' 0 1000 'U1' 0 2000 'U1' 1 1000 Something like ROW_NUMBER but auto generated on insert row 回答1: No, you can't use a window function in a computed column. Computed columns must be scalar values. However, this is a