How do I check condition while mapping in SSIS? - ssis

Question

i want to create one ssis package which takes values from flat file and insert it into database table depending upon there companyname.
for example:
I have table fields:
Date SecurityId SecurityType EntryPrice Price CompanyName
2011-08-31 5033048 Bond 1.05 NULL ABC Corp
now i want to insert Price into this table but i need to match with CompanyName
and in that also in file CompanyName is like ABC so how can i checked that and insert only particular data...
like this i have 20 records in my file with different company names.
I DID LIKE THIS
in lookup i did
and now my problem is i need to check company name from flat file and insert that company price into table but in flat file company name is given like 'AK STL' ans in table it is like 'AK STEEL CORPORATION' so for this i have used column transformation but what expression i write to find match ...same with other company names only 1ft 2-3 charachters are there in flat file please help

Answer 1

Basically, you are looking to "Upsert" your data into the database. Here is a simple look up upsert example. With as few of records in your dataset as you have said, this method will suffice. With larger datasets, you probably want to look into using temp tables and using sql logic similar to this:
--Insert Portion
INSERT INTO FinalTable
( Colums )
SELECT T.TempColumns
FROM TempTable T
WHERE
(
SELECT 'Bam'
FROM FinalTable F
WHERE F.Key(s) = T.Key(s)
) IS NULL
--Update Portion
UPDATE FinalTable
SET NonKeyColumn(s) = T.TempNonKeyColumn(s)
FROM TempTable T
WHERE FinalTable.Key(s) = T.Key(s)
AND CHECKSUM(FinalTable.NonKeyColumn(s)) <> CHECKSUM(T.NonKeyColumn(s))