How To Make Comparison Between Two Tables

Jun 20, 2014

This is my scenario. I have two tables

1)FM_SHARE_RO_MOVED (5 COLUMNS)
2)PARSE_FILE INSTANCE (16 COLUMN)

column in FM_SHARE_RO_MOVED
File_name
FG00E3PK.csv

column in PARSE_FILE INSTANCE
File_Location
D:ToParseFLEXSTARPNGFLEXSTAR12FG00E3PK.csv

I want to check if the values in file name in FM_SHARE_RO_MOVED is available in PARSE_FILE_INSTANCE. And if it is available the update a column in FM_SHARE_RO_MOVED

Status
OK

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How Do I Best Make A Comparison Of Two Aggregated SELECT’s

May 9, 2006

Hi,

I have a question about how to best make a comparison of two aggregated SELECT€™s. I'm using SQL Server 2005 on a Windows XP machine.

I€™m doing a comparison between donor/gift information from one table and donor/gift information from another table. I have a difference of 7 records/gifts between the two tables. For whatever reason one table is supposedly Header level data and the other is Line level data and they are supposed to have the same number of records/gifts (not an issue here).

The aggregated SELECT€™s, which will show the donor and the number of gifts each made, are listed below:


SELECT
[Account Number]
,count(*) as [Count]
FROM
Zk_HeaderMulti
GROUP BY
[Account Number]

--

SELECT
[Account Number]
,count(*) as [Count]
FROM
Zk_LineMulti
GROUP BY
[Account Number]

Is there a more efficient way to do this than the below listed method in which I use temp tables, join them and find the donor(s) with differing number of gifts between the header table and the line table?

=================================================

SELECT
[Account Number] as Line_Donor
,count(*) as LineGift_Num
INTO
#Line
FROM
Zk_LineMulti
GROUP BY
[Account Number]

--

SELECT
[Account Number] as Head_Donor
,count(*) as HeadGift_Num
INTO
#Header
FROM
Zk_HeaderMulti
GROUP BY
[Account Number]

--

SELECT
Line_Donor
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,Head_Donor
,HeadGift_Num
FROM
#Line A
JOIN
#Header Z
ON a.Line_Donor=z.Head_Donor
WHERE
LineGift_Num<>HeadGift_Num

==================================================

I thought I might be able to try and do it in a single query that doesn€™t require two temp tables, but took the easy way out. Any suggestions?

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