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T-SQL help

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S7
S7
Old Hand
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Group: General Forum Members
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I have two identical tables. Table 1 has 12,000 rows and Table 2 has 11,000 rows. I need to insert rows from Table 2 on Table 1 that don’t exist on Table 1. What is a quick way of accomplishing this?
GilaMonster
GilaMonster
SSC Guru
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Insert into Table1 (<column list>Wink
Select <columns> from Table2
WHERE <primary key column> NOT IN (select <primary key column> FROM Table1)

or

Insert into Table1 (<column list>Wink
Select <columns> from Table2
EXCEPT
Select <columns> from Table1


Roughly.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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CapnHector
CapnHector
SSCrazy Eights
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could also use something like:

insert into table1 (Values)
SELECT values
FROM table2
LEFT JOIN table1
ON table2.somecolumn = table1.somecolumn
WHERE table1.somecolumn IS NULL




at lease i think since we dont have DDL and Sample data its hard to get tested code


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Mark Eckeard
Mark Eckeard
SSCommitted
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Look at except:

http://msdn.microsoft.com/en-us/library/ms188055.aspx

Mark



Lynn Pettis
Lynn Pettis
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Mark Eckeard (9/10/2012)
Look at except:

http://msdn.microsoft.com/en-us/library/ms188055.aspx

Mark


If you are going to post a url, at least make it usuable.

http://msdn.microsoft.com/en-us/library/ms188055.aspx

Cool
Lynn Pettis

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