Difference Between 2 Tables
Aug 21, 2006
Hi,
We have 2 tables as follows,
TableA
------------
doc_id ver_id ref_date
TableB
------------
doc_id ver_id ref_min_date
We need to find out the records that exists in TableA but not in TableB
and also to get the minimum of TableA.ref_date from the result.
For example,
TableA has the following rows
doc_id ver_id ref_date
100 1 10-AUG-2006
100 2 12-AUG-2006
100 2 13-AUG-2006
100 2 14-AUG-2006
100 2 15-AUG-2006
200 1 17-AUG-2006
300 1 18-AUG-2006
TableB has the following rows
doc_id ver_id ref_date
100 1 10-AUG-2006
200 1 10-AUG-2006
Result should be as follows
doc_id ver_id ref_date
100 2 12-AUG-2006
300 1 18-AUG-2006
Please help us in writing the query
Thanks
Ashok
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Jan 5, 2007
Hi im trying to find the difference between 2 silmilar tables in sql 2000. 1 table has 279,042 records and the other has 279,003 records, I ideally want to difference so to enable me to merge the two tables
I would really appreciate any help
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Jun 17, 2008
Hi,
First post here :) Subject might not make sense, so allow me to explain. I have a table, tbl_finalized. A unique record consists of an emp_id, building, and school_year. I have another table, (call it table2) where emp_id, building, and school_year are fields as well. What I'm trying to do is... grab all the emp_id's from table 2 ( along with the school_year and building ) and then see if it exists in tbl_finalized. If it does, I don't want it. I want all the usernames in table2 that don't exist in tbl_finalized.
Here's an example:
table2 contains the following record:
emp_id: xxx, building: 333, school_year: 2008
emp_id: zzz, building: 333, school_year: 2008
emp_id: yyy, building: 444, school_year: 2008
tbl_finalized has the following records:
emp_id: yyy, building: 333, school_year: 2008
emp_id: xxx, building: 333, school_year: 2007
emp_id: xxx, building: 333, school_year: 2008
The result I desire is:
emp_id: zzz, building: 333, school_year: 2008
emp_id: yyy, building: 444, school_year: 2008
I hope this makes sense. If not, please ask and I will do my best to explain. I have light understanding of joins, but not sure how to get the difference like I desire in this case...
TIA.
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May 27, 2014
I have two similar tables in different database and need to make query to select only the data from the first table that is not available in the second table and there is no unique record for each record , but each row is having different records for example:
CREATE TABLE table1(
[PNR] [nvarchar](10) NOT NULL,
[Tkt_Number] [nvarchar](10) NOT NULL,
[DepaCityName] [nvarchar](50) NULL,
[ArriCityCode] [nvarchar](3) NULL,
[Code] ....
Output should be like this
PNR | TKT_NUMBER | DEPACITYNAME | ARRCITYCODE | NAME
fdf44 12669 Sah DXB lamees
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Sep 3, 2013
I receive the following result set from TableA (In Time)
7/9/2013 9:27:00.000 AM
7/9/2013 10:24:00.000 AM
7/9/2013 11:25:00.000 AM
7/9/2013 1:23:00.000 PM
7/10/2013 7:27:00.000 AM
Then we receive the following result from TableB (Out Time)
7/9/2013 9:30:00.000 AM
7/9/2013 10:29:00.000 AM
7/9/2013 1:37:00.000 PM
[NULL]
[NULL]
We may not always get Out Times in TableB so I want to merge these into one table to have the In Time and Out Time in separate columns in that one table. In this example with the red type those should be In Time and Out Time for mapped unique identifiers from each table and yet the purple color coded example would have an In Time of 11:25 AM and the Out Time would remain as NULL.
I am using this block of code but is not working the way I want it to because the 11:25am In Time is getting mapped to the 1:37pm Out Time.
and out_time = (select min (out_time)
FROM tableB WHERE
tableB.record# = tableA.record#
and tableB.loc_id = tableA.loc_id
GROUP BY tableB.record#, tableB.loc_id )
It seems I need to focus on the minimum datediff for each record line but can't figure that part out.
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and
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