Transact SQL :: Counting Blocks Of Time In 15 Minute Chunks
Feb 16, 2012
We have data that consists of an employee number, a start time and a finish time, similar to the example below
EMP STARTTIME ENDTIME
00001 10-Feb-2012 06:00:00 10-Feb-2012 10:00:00
00002 10-Feb-2012 07:15:00 10-Feb-2012 10:00:00
00003 10-Feb-2012 08:00:00 10-Feb-2012 10:00:00
I am trying to come up with a procedure in SQL that will give me each 15 minute block throughout the day and a count of how many employees are expected to be at work at the start of that 15 minute block. So, given the example above I would like to return
10-Feb-2012 00:00:00 0
10-Feb-2012 00:15:00 0
10-Feb-2012 06:00:00 1
10-Feb-2012 06:15:00 1
[code]....
I'm not too worried if the date part is not included in the result as this could be determined elsewhere, but how can I do this grouping/counting?
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Oct 30, 2014
I have the following SQL that I want to log the number of visits from clients. a session is a block of time, for example, any time between 9-12 is a morning sessions, 12-5 is an afternoon session etc. I need to count the number of sessions in a month not the appointments within the session, make sense?
select sr.resourceid, st.TimeStart, datename(m,sr.scheduledate) as sesmonth, datename(yy,sr.scheduledate) as year,
(CASE
WHEN DATEPART(hour, st.TimeStart) BETWEEN 0 AND 12 THEN 'MORNING SESSION'
WHEN DATEPART(hour, st.TimeStart) BETWEEN 12 AND 17 THEN 'AFTERNOON SESSION'
WHEN DATEPART(hour, st.TimeStart) BETWEEN 17 AND 24 THEN 'EVENING SESSION'
[Code] ....
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Apr 9, 2015
Just wondering what is the best time to ensure that we only return data when the datetime field is the same when compared between two datetimes within a minute difference.
As in the following should return the data:
'2015-04-09 09:00:20' compared to '2015-04-09 09:00:50'
And the following should not return the data:
'2015-04-09 09:01:20' compared to '2015-04-09 09:00:50'
The problem, is that I'm merging data from three different result sets, which they all have data for every minute, however, the timestamp can be different by seconds or milliseconds.
So, I'm only interested to return the data when the two fields that I'm comparing are equal within a minute. I need to ignore seconds and milliseconds.
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Aug 14, 2015
I have configured an alert like below to track all blocked events in SQL Server across all databases and then kick start a sql job when a blocking happens which inserts data to a table, when there is a blocking in SQL server , i get an email --which is working fine and i am able to track all queries.
but, HOW to get notifications ONLY if BLOCKING IS HAPPENING FOR MORE THAN 30 SECONDS OR 1 MINUTE with out using sp_configure?
---ALERT
USE [msdb]
GO
EXEC msdb.dbo.sp_update_alert @name=N'Blocking Process',
@message_id=0,
@severity=0,
@enabled=1,
[Code] .....
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May 7, 2015
How I can update the following date to get the desired result with specific hour, minute and second
2014-01-01 00:00:00.000
Desired Result
2014-01-01 17:20:20.000
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Nov 9, 2015
I just need the date, hour, and minute...not the micro seconds. Do I have to DATEPART and concatenate each or is there any way to simply truncate the milliseconds from it? Or is there a date format to put extract and report on it as...
MM/DD/CCYY HH:MM:SS AM
I see there is a format 131 that puts it in..
DD/MM/YYYY HH:MM:SS:MMMAM
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Sep 25, 2015
Is there a way that I can do this at the table level to automatically handle the rounding of seconds, etc. down to the minute automatically without having to use a trigger?
Here is a very basic example of what I am trying to do:
--example: '09-22-2007 15:07:18.850' this is the value inserted into the table by the code
select getdate()
--example: '2007-09-22 15:07:00.000' this is the value I want to store in the table
select dateadd(mi, datediff(mi, 0, getdate()), 0)
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Oct 3, 2015
I hope to update a DateTime column value with a Time input parameter. Poor attempt below but it looks like the @ApptTime param is coming in as 10:45:00.0000000 and I might have an existing @SendOnDate as: 2015-10-05 07:00:00.000...I hope to end up with 2015-10-05 10:45:00.000
ALTER PROCEDURE [dbo].[SendEditUPDATE]
@QuePoolID int=null
,@ApptTime time(7)
,@SendOnDate datetime
[code]...
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Apr 21, 2015
SELECT
CONVERT(VARCHAR(10),attnc_chkin_dt,101) as INDATE,
CONVERT(VARCHAR(10),attnc_chkin_dt,108) as TimePart
FROM pmt_attendance
o/p
indate 04/18/2015
time part :17:45:00
I need to convert this 17:45:00 to 12 hours date format...
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Oct 19, 2006
hi,
i have a big table (120 million records) and i want to take all this table and to insert it into another table. since this BULK insert operation can make all kind of performance problem i would like to make the bulk insert via small chunks. the table does not have any idintity.
can someone give me an exapmle with rowcount or with a loop to make each time an insert into select statment and to insert in each time for example 5000 rows.
help is appriciated,
thx,
Tomer
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Sep 28, 2007
I have a table that's 25,000,000 records... about 10 fields. I need to export this data to a flat file in no more than 500,000 record chunks. I've tried the following algorithm, adding a flag field called "exported" with default value 0.
do:
- mark random 500,000 records, setting exported = -1
- export everything in that table where exported = -1
- set exported = 1 where exported = -1
loop
This was pretty slow, taking about 10 hours last night to run.
I find myself wanting a sort of a split dataset task in SSIS, being able to split records a chunk of records out of a dataset and handle them. Anyone have ideas for me?
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Sep 13, 2007
I need to export records to a flat file using a dataflow task, but want no more than 50,000 records in each file. What's the best way to automate this?
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Jan 21, 2004
Hi,
I have a text file (5 MB). It appears as a single line in a text editor. But actually it has records of 1500 byte length each.
I want to strip it down to 1500 byte records. So 1500*3500 = 5 MB (approx). The record size is always 1500 bytes.
Does anyone have a script that I can run on this file to achieve this break.
Thanks
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Apr 3, 2008
I have a table based around requisitions, and each requisition has a number of positions. That number can change over time through updates to pertinent rows rather than through transaction-like records that record an entire history, and I'm only able to get a monthly snapshot of the table. What I decided to do is still use one table for OLAP (fact_requisitions) but add a column called period_key that refers to the month the data comes from. So if I have two months of data then the table has each requisition twice, possibly with differing position counts, and new requisitions from the second month are only present once. Then I tried to filter the MDX query like so:
SELECT {
([Dim TimeRequestClosed].[Year - MonthNumber].[Year_Text].&[2008].&[1],[Dim Requisitions].[Period].[Period Key].&[200801])
}
ON COLUMNS,
NON EMPTY
{
([Dim Location].[Region Name].MEMBERS, [Dim Location].[Period Key].&[200801])
}
ON ROWS
FROM
[Requisitions]
WHERE
[Measures].[Request Closed Date Count]
This query doesn't work even though the data is there, it just returns nulls. Am I going about this all wrong? If not, what might I be doing wrong, and how would I get the query to return more than one period (e.g. tell Dim Requisition to match up with Dim Location on the period key)?
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Sep 7, 2006
From what I can see, the 'varbinary(max)' data type is not supported, and the 'image' data type is supposed to go away. Is there some other way to store large chunks (10MB to 100MB) of data into an SSEv DB?
If I have to use the 'image' data type to so this, does anyone have a code sample that would let me push an array() of numbers into an 'image' field, and unload an 'image' field into an array()?
TIA
Pat
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May 7, 2002
Here's a little SP to break up those long-running, massively-locking, bring-app-to-a-halt queries. By default it does 500 rows at a time and allows for a maximum SQL query size of 4000 characters; it should be trivial to adjust those.
Cheers
-b
CREATE PROCEDURE p_BatchExecute (@vcSQL varchar(4000)) AS
set nocount on
DECLARE @iRows int
select @iRows=1
SET ROWCOUNT 500
WHILE @iRows>0
BEGIN
print 'Executing batch of 500...'
exec (@vcSQL)
set @iRows=@@ROWCOUNT
END
GO
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May 6, 2004
I'm using the code below to send files that are in a blob file in my database to the browser client. The code sends the file in chunks in order to increase performance. The file I'm using to test with is 7MB. It works great on Windows XP with any browser. It takes virtually the same amount of time compared to downloading the file directly from the webserver. However, Windows 2000 and Mac OS X both take about 4x the amount of time it takes to download the file on XP machines. Why the performance difference? Is there anything I can do to fix this? I tried downloading the file directly from the webserver instead of getting it out of the database and it takes the same amount of time on all 3 OS. I had the same problem on Windows XP when I wasn't sending the file in chunks, but after using the code below, it started working for XP only.
Dim bufferSize As Integer = 24000
Dim outbyte(bufferSize - 1) As Byte
Dim retval As Long
Dim startIndex As Long = 0
Dim sql As String = "SELECT ..."
Dim cmd As New SqlCommand(sql, conn)
conn.open()
Dim dr As SqlDataReader = cmd.ExecuteReader(CommandBehavior.SequentialAccess)
If dr.Read() Then
' Reset the starting byte for a new BLOB.
startIndex = 0
' Read bytes into outbyte() and retain the number of bytes returned.
retval = dr.GetBytes(DocCol, startIndex, outbyte, 0, bufferSize)
Current.Response.Clear()
Current.Response.Buffer = True
Current.Response.ContentType = "application/octet-stream"
Current.Response.AddHeader("Content-Disposition", "attachment; filename=" & myfile" & "." & myextension)
Do While retval = bufferSize
Current.Response.BinaryWrite(outbyte)
Current.Response.Flush()
' Reposition the start index to the end of the last buffer and fill the buffer.
startIndex += bufferSize
retval = dr.GetBytes(DocCol, startIndex, outbyte, 0, bufferSize)
Loop
'Write the remainder of the last chunk
Dim remaining(retval) As Byte
Array.Copy(outbyte, 0, remaining, 0, retval)
Current.Response.BinaryWrite(remaining)
Current.Response.Flush()
Current.Response.Close()
End If
dr.Close()
conn.Close()
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Jun 1, 2007
Using the SqlClient provider I'm trying to write big datachunks of maybe 20 MB each to SQL server to store in BLOBs using blobColumn.Write(...) using .NET 2.0 dbcommand object calling a Stored procedure
CREATE PROCEDURE [dbo].[putBlobByPK]
(
@id dKey
, @value VARBINARY(MAX)
, @offset bigint
, @length bigint
, @ModDttm dModDttm OUT
, @ModUser dModUser OUT
, @ModClient dModClient OUT
, @ModAppl dModAppl OUT
)
....
When doing this I can do this exactly 3 times than the application hangs (for ever).
When looking in the SQL Server log, I find the following to errors:
Error: 4014, Severity: 20, Status: 2.
A fatal error occurred while reading the input stream from the network. The session will be terminated.
I don't get this error on the client! OK, the session died.
What may be the problem?
I write big chunks like this to avoid many writes as the data shall be replicated later using peer to peer replication. And the more writes used for writing the total BLOB the more huge becomes the transaction log of the subscriber database.
TIA
Hannoman
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Apr 30, 2015
I have the following code which returns day of week name, position and date and time of surgeries.
SELECT
DATENAME(WEEKDAY,OPE_START_TIME) AS DOW,
[OPE_ORDER_IN_SESS_ASC] AS POSITION,
OPE_START_TIME AS [TIME]
FROM table1The data looks like thisHow can i group this data so I get the average start time by day of week and position?
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Nov 23, 2015
select TOP 10 rec_id,trans_id,number_id,card_no,message_id,trans_datetimefrom [dbo].[trans_log]
order by trans_datetime desc101, 1,34343, 99999, 200, 2015-11-23 12:27:25.710101,2,34343,99999,210,2015-11-23
12:27:26.710102,3,43434,88888,200,2015-11-23 12:28:26.714102,4,43434,88888,233,2015-11-23 12:28:27.710expected result:34343,99999,datediff(ss,'2015-11-23 12:27:26.710','2015-11-23 12:27:25.710') --difference between row 2 and row 143434,88888,datediff(ss,'2015-11-23 12:28:26.714','2015-11-23 12:28:27.710') --
difference between row 4 and row 3difference between row 6 and row 5...In the above query, I always want to find the difference in transaction date time between second and first row in a moving window.I have the unique id as rec_id to compare the next row with the previous row.
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Dec 1, 2015
why does select @@lock_timeout return -1. Shouldn't this return lock timeout in milliseconds?
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Jun 4, 2015
Table contains field defined as text. First 12 characters will be date format 'mm/dd/yyyy'. then the next 3 characters could be:
9A, 12P, 3P, 7A or LTL
I would like to convert '9A' to be 09:00AM, so that I can sort by that converted field.
'12P to be 12:00PM and so on....
I have tried various form of case with substring and convert commands, but cant' get the solution. I can not change text field to varchar in table.
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Aug 28, 2015
I need to build a reference table that will contain the time zone, offset value and DST changes for all time zones. Is there a way I can pull this from the windows server hosting sql server?
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Nov 17, 2015
I have a table like below
CREATE table #TempTable (ID integer,CTime time(7),CType Varchar(1))
insert into #TempTable VALUES (1001,'16:50:05.0000000','I')
insert into #TempTable VALUES (1001,'13:27:49.0000000','O')
insert into #TempTable VALUES (1001,'20:44:00.0000000','O')
insert into #TempTable VALUES (1001,'21:12:00.0000000','O')
I need result like below screen shot
here 'I' stands for In,and 'O' for Out, in this example first In time not available
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Oct 14, 2015
I am using aloha POS and they have the date for every check in separate fields and now I want to calculate the total time for the checks but unable to get the how of it..
The date is DOB and it's datetime but I just need to extra the getdate() from it.The open time is OPENHOUR and OPENMINThe close time is CLOSEHOUR and CLOSEMIN
so basically the open time for the check will be the DATE FROM DOB + OPENHOUR + OPENMIN
And the close time will be DATE FROM DOB + CLOSEHOUR + CLOSEMIN
How can I get the total minutes for the check?
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Jul 10, 2015
Currently my script is using the below mentioned query to find the time difference.
DATEDIFF(HH,DATEADD(SS,hcreacion,fcreacion) ,DATEADD(SS,hcerrar,fcreacion))
If there is 1 hr 30 minutes time difference, I am getting 2 hours as output. But we need 1.30 as output. is there any way to achieve this?
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May 23, 2015
I have the below query
DECLARE @GivenDate DATE='2015-05-13'
create table #table (LedgerID int,AttDate Date, checkedtime time,checkedtype varchar(1))
insert into #table (LedgerID,AttDate,checkedtime,checkedtype) values (1232,'2015-05-13','09:01:48.0000000','I')
insert into #table (LedgerID,AttDate,checkedtime,checkedtype) values (1232,'2015-05-13','13:05:52.0000000','O')
insert into #table (LedgerID,AttDate,checkedtime,checkedtype) values (1232,'2015-05-13','14:10:25.0000000','I')
[code]....
the result is like below
i need 'TotalDiffernceTime' column as new column (OUT1-IN1)+(OUT2-IN2).
i am using SQLServer 2008 R2
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Jun 21, 2015
I have a table data like below
id type timestamp
1001 start1 10:34:23:545
1001 start2 10:34:24:545
1001 end2 10:34:24:845
1001 end1 10:34:25:545
1002 start1 10:34:25:645
1002 start2 10:34:25:745
1002 end2 10:34:25:945
1002 end1 10:34:25:965
I need the result as follows
id millisecond diff start1end1 millisecond diff start2end2
1001 end1 timestamp-start1 timestamp end2 timestamp-start2 timestamp
1002 end1 timestamp-start1 timestamp end2 timestamp-start2 timestamp
SQL Server 2008 R2
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Jul 13, 2015
We are maintaining 3 Shifts in our database. Problem in maintaining date and time for 3rd Shift. For example, today date is 13th July and third shift timing is 11 PM - 7 AM. Then I have to display the beginning date as 13/07/2015 11 PM and end date as 14/07/2015 7 AM. Please find the data(in seconds) available in database which I need to use for my calculation.
Date(Fcreacion)
Start time in Seconds(Hcreacion)
End time in seconds(Hcerrar)
turno(Shift)
[code]...
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Oct 4, 2015
The first gives null (on sql 2014); the second works. why?
select format(cast('07:35' as time(0)), N'hh:mm')
select format(cast('07:35' as datetime2(0)), N'hh:mm')
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Jun 10, 2015
I have a table Mytable which has two fields (Date, Value) and record is based on every hour like this:
Date Value
1999-01-01 00:00:00 10
1999-01-01 01:00:00 8
1999-01-01 02:00:00 6
...
1999-01-01 23:00:00 12
1999-01-02 00:00:00 9
1999-01-02 01:00:00 5
...
1999-01-02 23:00:00 2
How can I use a query to get accumulate value for the day? the result should look like this:
Date Value Accumulated_Value
1999-01-01 00:00:00 10 10
1999-01-01 01:00:00 8 18
1999-01-01 02:00:00 6 24...
1999-01-01 23:00:00 12 36
1999-01-02 00:00:00 9 9
1999-01-02 01:00:00 5 14...
1999-01-02 23:00:00 2 16
The accumulated value should be based on every hour for the day and then repeat for the second day and so on.
What is the best way to do this? I am using SQL 2008
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Apr 20, 2015
i have these two tables
create table [dbo].[test1](
[test1_id] [int] identity(1,1) primary key,
[test2_id] [int] not null
)
[code]...
I want to insert the data into two tables in one insert statement. How can i do this using T-SQL ?
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May 18, 2015
i have a table like below,
CREATE TABLE #ATTTABLE
(
Name VARCHAR(20),
AttDate DATE,
PresntTime TIME
[code]....
and then i pivot table by date as column wise using the below query and also displays total time by rowswise
SELECT t1.*, t2.Total
FROM (
SELECT name,[2015-08-01],[2015-08-02]
FROM (
SELECT name, AttDate,PresentTime
[code]....
now what i need is to display sum of time at last row as well, means total time of against date
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