How To Check Previous And Next Record Values

Hi all,

I wanted to check the previous and next record values.

For example:

sKey NextKey PreviousKey

1 2 Null
2 8 1
8 5 2
5 null 8

I wanted to check the value of NextKey of Prev record and Skey of Next record.

Any idea?


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How To Check Previous And Next Record Values

Hi all,

I wanted to check the previous and next record values.

For example:

sKey NextKey PreviousKey

1 2 Null
2 8 1
8 5 2
5 null 8

Ex : In the first record of the table, the NextKey is pointing to 2.
So the next record of Skey will be 2. The Next Key for this record is 8. Like wise the next record of this should have the Skey as 8.

Now I need to check whether the NextKey and SKey are correct for all rows.

For that I need to check the previous record of "Next key" and next record of "Skey".

Any idea?


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My Table1:


EUR A0-FX 2008-05-09 11:37:31.203 1.54035
EUR A0-FX 2008-05-09 11:37:30.030 1.54034
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EUR A0-FX 11:37 1.54031
EUR A0-FX 11:38 1.54041

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;WITH cte



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EUR A0-FX 11:37 1.54031 ß1
EUR A0-FX 11:38 1.54041 ß2
EUR A0-FX 11:39 1.54021 ß3
EUR A0-FX 11:40 1.54081 ß4
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EUR A0-FX 11:44 1.54081 ß8 (1.54071)

At 11.42 time average is 1-5 price values
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At 11.44 time average is 3-7 price values

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