SQL 2012 :: Creating A Unique ID For Groups Of Rows?
Mar 20, 2015
We have a sorted data that looks like the first 3 columns below, and fourth colum is what I want to create)
Shift_start meal_break shift_endShift ID
1 0 0 1
0 0 0 1
0 0 1 1
1 0 0 2
0 0 0 2
0 0 1 2
I need to find a method to assign unique Shift IDS to rows that correspond to a single shift. For instance, the first shift would begin on the first row when shift_start flag is turned on, and end on the third row when shift_end flag is turned on.
Can I do this in SQL ?...some kind of grouping ?
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Jan 21, 2014
I have a dataset that contains an EmployeeID, StartDate, EndDate, and Location. Each record tells me at which location and employee was during a payroll period (fortnightly). So the data looks like:
EMP_KEYSTART_DTEND_DTLOCATION
120130117201301318103
120130117201301318103
120130131201302143354
120130131201302148103
220130117201301311234
220130131201302144567
120130214201302283354
220130214201302281234
Employees can be at multiple locations during the two weeks. They can work at one location, stop working there, start working somewhere else, and then maybe go back to their old location. There are duplicate records here as each employee can be at the same location multiple times during the two week period. What I need to capture is the actual start and end date of an employee at each location for each 'assignment'. An assignment is defined as a continual period of employment at a location with gaps of no less than 4 days - if there is a gap of more than four days then that is classed as a new assignment.
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Apr 18, 2014
write a query which retrieves only unique rows excluding some columns.
IdStatusmanager Team Comments Proj number Date
19391New XUnassigned One 3732.0 16-Apr-14
19392Can YCustomer Two 3732.0 17-Apr-14
19393Can YCustomer Two 3732.0 17-Apr-14
19394Can YCustomer One 3732.0 18-Apr-14
19395New YCustomer One 3732.0 19-Apr-14
19396New YCustomer One 3732.0 21-Apr-14
19397New ZCustomer One 3732.0 20-Apr-14
In the above table project number and id shouldn't be considered and I should get the unique rows considering rest of columns and sorted based on date. Expected result is
IdStatusmanager Team Comments Proj number Date
19391New XUnassigned One 3732.0 16-Apr-14
19392Can YCustomer Two 3732.0 17-Apr-14
19394Can YCustomer One 3732.0 18-Apr-14
19395New YCustomer One 3732.0 19-Apr-14
19397New ZCustomer One 3732.0 20-Apr-14
19396New YCustomer One 3732.0 21-Apr-14
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Oct 7, 2005
Steve writes "I need a query to show all the medicare patients only. I want only one kind of insurance for each patient. I am getting records where each patient has more than one insurance like medicare and something else.
Each patient has one,two, three or more insurances like
medicare,medical,blue cross,tricare etc.
The result should look like this:
Sam pick Medicare
John white Medicare
Ann Richmond Medicare
My query retrieves patients with more than one insurance.
select patient_first_name f_name,patient_last_name l_name,patient_zip zip,
count(distinct payer_id) payer_id
from claims
where payer_id ='abcdefhj'
group by patient_first_name, patient_last_name,patient_zip
having count(distinct payer_id)= 1
order by patient_zip asc;
please help me. Greatly appreciate your response."
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Aug 6, 2014
I'm trying to do the following and haven't been able to figure it out.
Say there's a table with these records:
Col1 Col2 Col3
a b c
a b c
a b d
e f g
e f g
I want to generate a number that represents the groups of columns like this:
Col1 Col2 Col3 MyNumber
a b c 1
a b c 1
a b d 2
e f g 3
e f g 3
So that each grouping gets its own identifier. I've tried this:
SELECT Col1, Col2, Col3
row_number() OVER (PARTITION BY Col1, Col2, Col3
ORDER BY Col1, Col2, Col3) AS MyNumber
FROM MyTable
But I get this:
Col1 Col2 Col3 MyNumber
a b c 1
a b c 2
a b d 1
e f g 1
e f g 2
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Jul 5, 2015
This index is not unique
ix_report_history_creative_id
Msg 2601, Level 14, State 1, Procedure DFP_report_load, Line 161
Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'.
The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
Msg 3621, Level 0, State 0, Procedure DFP_report_load, Line 161
The statement has been terminated.
Exception in Task: Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'. The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
The statement has been terminated.
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Feb 6, 2014
Table 1:
AB C
114.7
214.7
314.7
Table 2:
ADE
11a1.2
11b1.8
22a2.1
22b2.3
33a0.6
I would like to filter the second table taking one row per ID of Field A (first table) and selecting the rows whose sum of E is equal to the value in field C; in this example the resulting table should be:
Table 3:
ADE
11b1.8
22b2.3
33a0.6
Total field E = value in field C = 4.7
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Dec 5, 2006
I want to write a stored procedure to add all of the flying time on a given airplane for each flight until now and then reset the total when it gets to a new airplane. I want to be able to pull from the table all flying time from a given date for a given airplane.
For example:
AircraftNo Date Flight_Hrs Total
38 3/1/06 1 4.5
38 5/10/06 1.5 3.5
38 7/10/06 2 2
100 8/19/03 4 8.5
100 10/04/04 3 4.5
100 9/17/06 1.5 1.5
I pulled the following code from the internet but I'm getting errors.
select AircraftNo
,Actual_departing_date,Flight_Hours
,sum(Flight_hrs) over partition by AircraftNo
order by Date
rows between current row and unbounded following) total
from (Select Distinct
F.AircraftNo
,F.Date
,C.Flight_Hrs
From GDB_01_4_Test.dbo.Flight_Log F,
GDB_01_4_Test.dbo.Flight_Cycle_Count C
Where F.Doc_No = C.Flight_log_Doc_No
Am I doing something wrong. I'm getting the following syntax errors (Using SQL 2000):
Server: Msg 156, Level 15, State 1, Line 3
Incorrect syntax near the keyword 'over'.
Server: Msg 170, Level 15, State 1, Line 18
Line 18: Incorrect syntax near 'Flight_log_Doc_No'.
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Mar 22, 2007
Hi there,
I'm currently grouping data on some criteria, the way the data works basically means that there are between 2-3 groups guaranteed (no more). In the Group Header I have CountRows(table1_group) thus giving me the total number of rows in each group at the top of each grouping. However, I need to do a calculation in a textbox above the table using these row counts. The method of grouping is not too difficult when using the VB syntax in the grouping expression but more difficult to get the same effect from the SQL side and hence I don't want to have separate datasets calling different queries to get the information that way. Is there anyway to get access to these row counts on the groups? Reporting Services can't know how many groups there will be before processing so I'm not sure that this is possible? Ideally I suppose if there was a Group CountRows collection of some kind that could be accessed in an expression in the textbox or custom code then this might be possible. I could also add an invisible column and set the values to something specific depending on the group if there was a way to count the number of values in the table (unique values repeated in columns in a group, but unique to that group).
Any help is much appreciated,
Thanks.
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Nov 30, 2000
I have built a table called Visit_Fact, which is detailed medical data. Within this table I have to create several index fields.
Well one of the fields ([Diag Code]) that should be included will have null values.
Well in Access I was able to build my new field called IndKey which has the following SQL statement:
IndKey: [PracticeCode]&[Physician Code]&[Chart #]&[Visit #]&[InsCoNum]&[CPT]&[Modifier]&[Units]&[Diag Code]
1. Example data with Diag Code = null
ABCD1234ABCDEF1234567MEDI19921301
2. Example data with Diag Code <> null
ABCD1234ABCDEF1234567MEDI19921301708.1
This runs fine in Access and if the Diag Code is null, Access does not care, it still puts all the other information together. Such as the examples above.
Well I tried doing this in a Stored Procedure and when I ran across a record that had a null value for the [Diag Code] it made the IndKey field Null for that record. If it was not null then it looked like Example 2.
What is the proper way of creating my unique field in SQL Server?
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Jul 20, 2005
HiI tried the following from the help file...When you create or modify a unique index, you can set an option toignore duplicate keys. If this option is set and you attempt to createduplicate keys by adding or updating data that affects multiple rows(with the INSERT or UPDATE statement), the row that causes theduplicates is not added or, in the case of an update, discarded.For example, if you try to update "Smith" to "Jones" in a table where"Jones" already exists, you end up with one "Jones" and no "Smith" inthe resulting table. The original "Smith" row is lost because anUPDATE statement is actually a DELETE followed by an INSERT. "Smith"was deleted and the attempt to insert an additional "Jones" failed.The whole transaction cannot be rolled back because the purpose ofthis option is to allow a transaction in spite of the presence ofduplicates.But when I did it the original "Smith" row was not lost.I am doing something wrong or is the help file incorrect.Dan
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Feb 11, 2014
Trying to find out if this is the best way to move log files in databases that are in an availability group.
remove the DB from the AG
Run alter database commands like you would normally to take offline ,move file,bring online ,etc
drop the db from secondary node
then rejoin the DB to the AG
Is that the only option for moving them when its in an avail group? cant find any other info on moving files in mirrors or HA groups
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Jun 30, 2014
I been trying to learn availability groups since I have not implemented it.
From my understanding you can have more than one group.
Lets pretend we have two groups in one instance:
1. Accounting
2. Engineering
From my understanding you can't make a database in two AG because it wouldn't make sense.
But lets pretending there is one database that both are used by accounting and engineering.
Would you have to make a third AG for future fail overs so that other databases in the other two group don't failover when not needed because when you fail over an AG all the databases inside it fail over.
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May 13, 2015
So, today we have the following:
Dallas: A 2 node Windows 2008 Cluster running SQL 2012 ENT cluster
Wash: A 2 node Windows 2008 Cluster running SQL 2012 ENT cluster
and I'm mirroring (synchronous, no witness) a database from Dallas to Wash.Crappy set up. I know.Now customer wants to have the database mirror to another server in Dallas.What are the high level steps to transform my two clusters to use Availability Groups and Always On?Do I need to basically start over and build a new environment?or can I transform my two disconnected cluster?
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Jan 11, 2007
Set Quoted_Identifier On
Go
Set Ansi_Nulls On
Go
Alter Procedure spReport_SomeFooReport
@SearchFromThisDate datetime = null, @SearchToThisDate datetime = null
As
Declare @TableUniqueIdentifier varchar(80), @SQLString varchar(5000)
set @TableUniqueIdentifier = newid()
set @TableUniqueIdentifier = 'Report_SomeFooReport' + @TableUniqueIdentifier
set @TableUniqueIdentifier = replace(@TableUniqueIdentifier, '-', '7')
set @SQLString = 'Create Table ' + @TableUniqueIdentifier + ' (xxx varchar(40))'
exec @SQLString
Return
Go
Set Quoted_Identifier Off
Go
Set Ansi_Nulls On
Go
-------------------------------------------
the error is:
Server: Msg 2812, Level 16, State 62, Line 12
Could not find stored procedure 'Create Table Report_SomeFooReport06EEEC8D7EA6A74D0178EDD79E999B (xxx varchar(40))'.
So may'be a format issue or something,
im trying to create "temp" tables for sql 2005 report services in my Stored procedures which would have a sql job to get deleted at 23:00
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Aug 12, 2013
From what I understand, one SQL Server 2012 instance can host multiple availability groups. That should allow, for example, the following situation - one SQL Server 2012 instance containing three primary replica databases - each one part of a different availability group - and each availability group's secondary replica located on a separate SQL Server 2012 instance.
Can you have three SQL Server 2012 instances, each with one primary replica database and have all three secondary replica databases on one SQL Server 2012 instance? So instead of, as above, going from 1 primary server to 3 secondary servers, this time we're going from 3 primary servers to 1 secondary server? The one secondary server would then contain all three secondary replicas for each of the 3 separate primary replicas.
This would mean that the single server (where all three secondary replicas reside) was part of three separate Windows Server Failover Clustering clusters.
Is this scenario possible?
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Feb 13, 2014
I have four instances and each instance have its own Availability Group with its own listener.
Would like to know if you can have one listener for multiple Availability groups?
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Apr 28, 2014
I am looking for the easiest way of rebalancing data across multiple files.
Instead of creating a secondary filegroup and then dropping and recreating all indexes in the database which is going to take ages (we have a lot of tables and indexes), I am trying to just add more files to the primary file group and then rebalance data evenly between these.
I guessed that adding the new files to the primary file group and then rebuilding all indexes on a table should redistribute the table over these multiple file groups evenly. This is not the case though. It does rebalance data a bit but I still end up with the majority on the first file that existed.
I have attached the script I am running, maybe it is something in the create database/file statements that is the issue.
Basically what I am seeing is to start off with the table is 160MB. I then add the file groups and rebuild all indexes on the table. The first file is then about 100MB and each of the three other files are about 20MB. I would expect them all to be the same size.
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Apr 28, 2014
We had 3 Availability Groups set up in SQL 2012 last year but they were poorly named so I am just looking to rename them but there doesn't seem to be any command for it that I can find.Can they not be renamed once created? I guess I could just create new ones and move the DB's into them but just thought I would check!
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Jul 30, 2014
We have a large Datawarehouse and the size is 50TB.. The tables are placed in filegroups based on the schema like fact, dimensions, raw data each sit on seperate filegroups. I am thinking will it make sense to seperate the large facts which are having billions of rows so that they reside on filegroups on their own..
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Aug 14, 2014
I have several 2012 availability groups running on a cluster. I have one database that is bulk loaded every 30 minutes. The DB is about 1 GB in size. To be on the availability group it has to be set to full recovery mode, but simple or even bulk would obviously be better. Is there a better way to handle the transaction log size other than to run a backup after each bulk load causing extra overhead? With mirrors you could use simple, but since those are going away . . .
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Aug 15, 2014
I would like synchronizing all the missing objects (logins, agent jobs, SSIS, and anything else that I've missed) across SQL 2012 Availability Groups.
I would like to be able to able to automate this process....
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Sep 8, 2015
We have some tables that are bulk-loaded every day and they do not have RI to the other tables in the database.
To ease pressure on the logs, I had the idea of spinning them off to another database on the same AG in simple or bulk-load recovery model and using synonyms to point to them so the code base would not need changing.
I know an earlier bug in 2005 existed that basically made the query analyzer ignore indexes if a table was accessed via a synonym.
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Sep 15, 2015
We have multiple SQL 2012 SQL servers setup in an alwaysOn availability groups. Where should we schedule the re-index? We have Server1 as the primary and 2 secondaries Server2 and Server3. Are their any tricks to have it run on which ever one is the primary?
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Mar 21, 2014
I'm reading up on Always on and I am confused what is the difference between AlwaysOn Availability Groups and AlwaysOn Failover Cluster Instances.
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Jun 5, 2014
I have a two node SQL 2012 AlwaysOn HADR cluster (v11.0.3412) with 4 availability groups configured. The AG groups are set to synchronous mode and the secondary is not readable (we do not want the synchronous replica readable so we do not risk any reads causing contention so we maintain fast performance).
On the secondary we are getting a persistent failure with the Data Collector job called Collection_Set_3_Upload. The failure occurs within the second job step. That job step is executing the following command:
dcexec -u -s 3 -i "$(ESCAPE_DQUOTE(MACH))$(ESCAPE_DQUOTE(INST))"
The error message is as follows:
Log Job History (collection_set_3_upload) Step ID 2 Server CLUSTERNODE2
Job Name collection_set_3_upload
Step Name collection_set_3_upload_upload
Duration 00:00:07
[Code] ....
I know I can prevent this error message by enabling readable secondaries, but we do not want this.
I have tried stopping the data collection jobs and purging the cache directory but to no avail. It will succeed the first time then persistently fail again with the same message every time after that.
In addition, if I set the one failing AG group to readable secondary the job succeeds. So that means that 3/4 work fine, only this one is having an issue.
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Sep 17, 2014
When the database is configured for mirroring and you want to do partitioning on that database, How can we do? Is this similar process or any variation there while adding file groups and files? The partition will reflect in the mirroring database also?
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Oct 22, 2014
Approach 1:
Prod - shared storage between server 1 and 2
Server1: clustered SQL instance with availability group as primary
Server2: Passive server for clustered instance of PROD
DR - shared storage between server 1 and 2
Server1: Clustered SQL instance with availability group as replica
Server2: Passive server for clustered instance of DR
Approach 2: Using replicated SAN
Prod -
Server 1: Standalone instance with availability group as Primary
Server 2:Standalone instance with availability group as replica
DR -
Server 1: Offline until Disk group 1 (Prod server 1) has been broken and brought online at DR
Server 2: Offline until Disk group 2 (Prod server 2) has been broken and brought online at DR
Both these approaches will work wont they? I have only built and played with normal availability groups across servers, not mixing it with clustered instance replicated SAN
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Jan 16, 2015
I have some data where a bit value changes over time and I want to rank it by the repeating groups, how do I write the SQL so that I get the result below?
I want to sort by create date, and every time the bit changes value we start the rank over.
If I partition by the bit field, it will just group the entire data set by the bit field.
Bit CreateDate Rank
1 3/15/2014 1
1 3/14/2014 2
0 3/9/2014 1
0 3/8/2014 2
0 3/6/2014 3
1 3/4/2014 1
0 2/28/2014 1
0 2/20/2014 2
0 2/15/2014 3
0 2/10/2014 4
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Jun 9, 2015
I inherited a SQL 2012 Ent server sitting on a 2008R2 server using AlwaysOn High Availability, two nodes.
Available Mode: Synchronous commit
Failover Mode: Manual
Connection in Primary role: Allow all connections
Readable secondary: No
seesion timeout: 10
Somebody decided to give SQL server priority boost so I need to change this ASAP. So I plan on doing the following.
1. Manually fail over to the secondary, which does not have the priority boost set to true
2. change the setting
3. restart the service
4. Manually fail over
My question is with the service restart. How does SQL handle if the DB changes on the new primary while the secondary is having the service restarted. Where can I see if the DB are sync again or if not where are they in the sync process.
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Sep 15, 2015
I have a below table as:
IF OBJECT_ID('tempdb..#Test') IS NOt NULL
DROP TABLe #Test
--===== Create the test table with
create table #Test([Year] float,
Age Int,
)
INSERT INTO #Test
([Year], Age)
[Code]...
I queried below to get additional column
Select *,row_number() over(partition by [Year] order by Age) as RN from #Test as
YearAgeRN
2014301
2014312
2014323
2015251
2015262
2015273
2015284
2015295
i want one more addtional column (Desired Output) with max of RN in each group as below"
YearAgeRNDesired output
20152515
20152625
20152735
20152845
20152955
20143013
20143123
20143233
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Sep 21, 2015
I am building a view to be used to drill down into a Lightswitch app I'm building and to drive this I want to use a view based off the selection of that value several other values will be given to the user to choose from related to the first selection. I've created a view using the following statement:
SELECT DISTINCT TOP (100) PERCENT ARSFamily, ARS_Index
FROM dbo.csr_standards_cmsars
ORDER BY ARSFamily
but the results come back with ALL the records of the source table (509 rows) when there should have only been 29 rows returned (the appropriate number of families or unique groups). The index is necessary to have Lightswitch use the view as a data source.what I'm doing wrong here?
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Aug 3, 2007
HI,
To create a unique constraint on a multiple nullable column, we need to create a view with not null column and and then create a unique index on that view.
Is this is the only way of doing ?
Thank you.
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