Sql Date Grouping with avaliable dates in database

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VB

Offerid             date         offeravaliable   Emailid 
73           6/8/2014 00:00:00    True             2
74           6/9/2014 00:00:00    True             2
75           6/10/2014 00:00:00   True             2
76           6/11/2014 00:00:00   True             2
77           6/12/2014 00:00:00   True             2
78           6/13/2014 00:00:00   True             2
79           6/14/2014 00:00:00   True             2
80           6/16/2014 00:00:00   True             2
81           6/17/2014 00:00:00   True             4
82           6/18/2014 00:00:00   True             4
83           6/19/2014 00:00:00   True             4
84           6/20/2014 00:00:00   True             4
89           6/27/2014 00:00:00   True             4
90           6/28/2014 00:00:00   True             4
91           6/29/2014 00:00:00   True             4
92           6/30/2014 00:00:00   True             4
93           6/1/2014 00:00:00    True             4
94           6/2/2014 00:00:00    True             4
95           6/3/2014 00:00:00    True             2
96           6/4/2014 00:00:00    True             2
97           6/5/2014 00:00:00    True             2
98           6/6/2014 00:00:00    True             2
99           6/7/2014 00:00:00    True             2
100          6/21/2014 00:00:00   True             4
101          6/22/2014 00:00:00   True             4
102          6/23/2014 00:00:00   True             4
103          6/24/2014 00:00:00   True             4
104          7/1/2014 00:00:00    True             4
105          7/2/2014 00:00:00    True             4
106          7/3/2014 00:00:00    True             4
121          7/6/2014 00:00:00    True             2
122          7/7/2014 00:00:00    True             2
123          7/8/2014 00:00:00    True             2

above record through i can generate below group of all date like as

C#

StartDate - EndDate    EmailID
6/1/2014 -  6/2/2014     4
6/3/2014 -  6/14/2014    2
6/16/2014 - 6/16/2014    2
6/17/2014 - 6/24/2014    4
6/27/2014 - 6/30/2014    4 
7/1/2014  - 7/3/2014     4

i trying to find, for each EmailID, the contiguous blocks of dates?
any one solve this question
thanks in advance

Posted 12-Jun-14 23:59pm

Ashvinrajkot

Updated 13-Jun-14 20:04pm

v6

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Comments

Debabrata_Das 13-Jun-14 6:28am

What is the criteria to decide Start Date and End Date?

Ashvinrajkot 13-Jun-14 12:18pm

no criteria for start dates and end dates
because all of the dates generating group wise in EmailDataID

Debabrata_Das 13-Jun-14 12:27pm

Sorry to say... but I cannot understand the question. Can you explain considering your input how are you generating the output? Take your time and explain properly so that everyone understand your requirement.

Ashvinrajkot 14-Jun-14 0:24am

in above question offerid 73 to 123 display this is my database value
and i can generate
StartDate - EndDate EmailID
6/1/2014 - 6/2/2014 4
6/3/2014 - 6/16/2014 2
this type output
How to fire query in Page load in asp.net

Sprint89 13-Jun-14 10:14am

Are you trying to find, for each EmailID, the contiguous blocks of dates?

I.e. if there had been a record on 6/15/2014 for EmailID 2, your second and third lines in your results would be combined into

StartDate - EndDate EmailID
6/3/2014 - 6/16/2014 2

Ashvinrajkot 13-Jun-14 12:16pm

yes i finding continues block of dates but not inserted date not add in record

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DamithSL · Answer 1 · 2014-06-13T00:10:00

Solution 1

try with Group By

SQL

SELECT date,count(*)
WHERE date between @start and @end
GROUP BY date

Posted 13-Jun-14 0:10am

DamithSL

Comments

Ashvinrajkot 13-Jun-14 6:14am

above query generated directly without start and enddate