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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

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

Any idea?

Regards
Helen


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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?

Regards
Helen

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Ex:
 
My Table1:
 
   SYMBOL                   TIME                         PRICE  
    
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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SYMBOL     TIME     PRICE
 
EUR A0-FX    11:37   1.54031
EUR A0-FX    11:38   1.54041
 
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;WITH cte
AS
(
SELECT
SYMBOL,
[Time],
Price,
ROW_NUMBER() OVER(PARTITION BY CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) ORDER BY CAST(Time AS DATETIME) ASC) AS rn_1,
ROW_NUMBER() OVER(PARTITION BY CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) ORDER BY CAST(Time AS DATETIME) DESC) AS rn_2
FROM
Table1 WHERE SYMBOL='EUR A0-FX'
)
 
SELECT SYMBOL='EUR A0-FX',CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) AS [Time],MAX(CASE WHEN rn_2 = 1 THEN Price ELSE NULL END) AS [Close] FROM cte
 
GROUP BY
CONVERT(CHAR(5), CAST(Time AS DATETIME), 114)
ORDER BY
CAST(CONVERT(CHAR(5), CAST(Time AS DATETIME), 114) AS DATETIME);
 
 
 
But I want to add some additional code in my procedure like AVERAGE of Previous 5 Price Values.
 
Ex:
 
SYMBOL     TIME     PRICE
 
EUR A0-FX    11:37   1.54031           Ɵ1
EUR A0-FX    11:38   1.54041           Ɵ2
EUR A0-FX    11:39   1.54021           Ɵ3
EUR A0-FX    11:40   1.54081           Ɵ4
EUR A0-FX    11:41   1.54071           Ɵ5      Previous 5 Average PRICE Values.
                                                                                    (1.54061)
 
EUR A0-FX    11:42   1.54091           Ɵ6                 
EUR A0-FX    11:43   1.54021           Ɵ7
EUR A0-FX    11:44   1.54081           Ɵ8
 
 
My Final
Out Put:
                                                                       
SYMBOL     TIME     PRICE                    AVERAGE
EUR A0-FX    11:42   1.54091           Ɵ6      (1.54061)       
EUR A0-FX    11:43   1.54021           Ɵ7      (1.54091)       
EUR A0-FX    11:44   1.54081           Ɵ8      (1.54071)
 
At 11.42 time average is 1-5 price values
At 11.43 time average is 2-6 price values
At 11.44 time average is 3-7 price values
 
 
 

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2 mark street no1 newcity newstate
3 mark street no1 newcity newstate
4 mark street no1 newcity newstate
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8 mark street no1 newcity newstate
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10 mark street no1 newcity newstate
11 mark street no1 newcity newstate
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14 mark street no1 newcity newstate
15 mark street no1 newcity newstate
16 mark street no1 newcity newstate
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18 mark street no1 newcity newstate
19 mark street no1 newcity newstate
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12 mark street no1 newcity newstate |
----------------------------------------

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5 | xxxxxxx
4 | xxxxxxx
3 | xxxxxxx
2 | xxxxxxx
1 | xxxxxxx
0 | xxxxxxx <-
5 | xxxxxxx <-
4 | xxxxxxx

anyway to select
0 | xxxxxxx
5 | xxxxxxx

out? based on the number of next row is 5, and current number is 0.

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hi,

i'm total newbee on SSIS packages and therefore need guidance.

I want to make a ssis package that (in order):

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Hey all,
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Here is the current code for the data source control.
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I am using Visual Web Developer Express 2005 and SQL Server Express 2005.
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I am now trying to find a way to check if null values exist in either one of two field from the same table.  If either field contains a null value, then I don't want the trigger code to be executed.
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say i have a table, and in it are two columns, column1 and column2 and i do the following query:

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column1 column2
------- --------
4 12345
9 12345
5 12345




column1 column2
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9 12345
9 12345
9 12345


in the 2nd case, column1 contains all the same values, so yes

is there anyway i can check this? i would be doing this in a trigger.. say when a new row is inserted, the value of column1 is inserted, but col 2 is null.. so when they try to fill in the value for col2 of that row, the trigger checks to see if the value they put for col 2 is already in the table.. if it isn't, then everything is ok. but if it is already in teh table, then it checks col1 to see if all the values of col1 are the same

i hope this makes sense

thanks

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I have a table Saleshistory with 89481412 records. I have a field Sales of nvarchar type, all the records in this field are numeric, and the records are with 2 decimal places. I expect all the records to be ending at .00 (for example 5.00,345.00,25.00), but I want to verify if something is for example 5.6 etc.

So in short I want to check if any Salesrecords have more than zero values in the decimal. How can I check this.

Please help.

Thanks,

Zee

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HI
I have a problem related Store Procedure, that i  am trying to extact a  value from Database (Like FirstName,LastName,Email Address) through Store Procedure and Display it in the DropDownList(Like: FirstName LastName ,(xyz@xyz.com)) , and this is working correctly.
Now i try to check the value at the same time if it is NULL value in the Database then pass EmptyString to the DropDownList Like ("" "" ,(xyz@xyz.com))
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