Thanks.
On 19/06/2011 8:09 AM, David Johnston wrote:
An alternative approach would be to select using a IN condition on the where
clause and group by column 1 and column 2. Then, using this as a sub-select
group by the resultant column 1 and a count on column two. The matching
identifiers are those with a count equal to the number of entries in the
original IN condition.
Basically count how many of values each distinct key in column 1 matches and
keep those keys where the count and the number of values match.
David J.
On Jun 18, 2011, at 17:51, Daron Ryan<daron.r...@gmail.com> wrote:
Hello,
I need to search a table to find sets of rows that have a column matching
itself for the whole set and another column matching row for row with a list I
am going to supply. The result I should receive should be value of the column
that matches itself.
For example given the following data in my table:
3; 1
3; 2
4; 8
4; 9
4; 10
I might need to search for 1,2. This should produce the result 3. Or if I were
to search for 8, 9, 10 the result should be 4. Searching for 8, 9 should
produce an empty result as should 8, 9, 10, 11.
Can anyone recommend a strategy?
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