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AskSQLTeam
Ask SQLTeam Question
0 Posts |
 Posted - 2004-12-13 : 08:23:13
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| Wayne writes "Currently I use a cursor to loop thru all the records in the temp table, I only insert record if it does not already exist in the live table. Is there a more efficient way of doing this? (like without using the cursor)" |
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nr
SQLTeam MVY
12543 Posts |
Posted - 2004-12-13 : 08:36:43
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| insert tblselect tmp.*from #temp tmpleft join tblon tmp.pk = tbl.pkwhere tbl.pk is nullYou might need a distinct too.==========================================Cursors are useful if you don't know sql.DTS can be used in a similar way.Beer is not cold and it isn't fizzy. |
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dsdeming
479 Posts |
Posted - 2004-12-13 : 08:38:07
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| Try checking for nulls from an outer join, something like this:insert into tablea( col1, col2... )select b.col1, b.col2...from tableb b left join tablea a on b.key = a.keywhere a.key is nullDennis |
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Inserting ONLY new records from a temp table to a live table