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9.0

Grouping + fill empty spaces

Asked by pmengal in MS SQL Server

Tags: empty, fill, space, data, sql

Hello,

Consider this table structure / data :

Column :     Connexions         DateRecorded        
Row1 :           10                         1/1/2007 11:12:45 pm              
Row2 :           11                         1/1/2007 11:17:12 pm              
Row3 :           13                          1/1/2007 11:17:59 pm              
Row4 :           12                         1/1/2007 11:25:11 pm              
Row5 :            11                         1/1/2007 11:26:13 pm              
Row6 :            10                         1/1/2007 11:28:52 pm              
Row7 :            9                         1/1/2007 11:28:59 pm              
Row8 :            8                         1/1/2007 11:41:00 pm              
Row9 :            7                         1/1/2007 11:47:15 pm              

Based on that table, I want to retrieve all the data from 11:12 to 12h00 (the getDate() returns 12:00:00), group by minute to get this :

Column :     Connexions         DateRecorded        
Row1 :           10                         1/1/2007 11:12
Row2 :           10                         1/1/2007 11:13
Row3 :           10                         1/1/2007 11:14
Row4 :           10                         1/1/2007 11:15
Row5 :           10                         1/1/2007 11:16
Row6 :           13                          1/1/2007 11:17
Row7 :           13                          1/1/2007 11:18
Row8 :           13                          1/1/2007 11:19
Row9 :           13                          1/1/2007 11:20
Row10 :           13                          1/1/2007 11:21
Row11 :           13                          1/1/2007 11:22
Row12 :           13                          1/1/2007 11:23
Row13 :           13                          1/1/2007 11:24
Row14 :           12                         1/1/2007 11:25
Row15 :            11                         1/1/2007 11:26
Row16 :            11                         1/1/2007 11:27
Row17 :            10                         1/1/2007 11:28
Row18 :            10                         1/1/2007 11:29
Row19 :            10                         1/1/2007 11:30
Row20 :            10                         1/1/2007 11:31
Row21 :            10                         1/1/2007 11:32
Row22 :            10                         1/1/2007 11:33
Row23 :            10                         1/1/2007 11:34
Row24 :            10                         1/1/2007 11:35
Row25 :            10                         1/1/2007 11:36
Row26 :            10                         1/1/2007 11:37
Row27 :            10                         1/1/2007 11:38
Row28 :            10                         1/1/2007 11:39
Row29 :            10                         1/1/2007 11:40
Row30 :            8                         1/1/2007 11:41
Row31 :            8                         1/1/2007 11:42
Row32 :            8                         1/1/2007 11:43
Row33 :            8                         1/1/2007 11:44
Row34 :            8                         1/1/2007 11:45
Row35 :            8                         1/1/2007 11:46
Row36 :            7                         1/1/2007 11:47

Please note that we do a MAX for grouping, so we keep the MAXIMUM value of the grouped records for the same minute. The complexity is to fill the record for each minute that is not on the table.

If it's not possible with a single SQL query, a stored proc is OK ;)

Thanks!
[+][-]12/16/06 07:19 AM, ID: 18151736Expert Comment

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[+][-]12/18/06 02:09 PM, ID: 18162108Accepted Solution

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About this solution

Zone: MS SQL Server
Tags: empty, fill, space, data, sql
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Solution Provided By: ScottPletcher
Participating Experts: 3
Solution Grade: A
 
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