Hi
I have a question on appending and deleting entries in mysql table.
This is my sample table. table name: details
I have numerous entries of same id name belonging to same median number.However,I want to only retain the entries having the longest first and end position and discard the remaining entries
For eg for id name ="PSK_30s1207681L002" AND median = 5 we have four entries
but I want to retain only the one having longest first and end points i.e
Here ,since for id name ="PSK_30s1207681L002" & median = N we have only 1 entry I want retain that one.
---------- Post updated at 05:02 PM ---------- Previous update was at 05:01 PM ----------
My final table in mysql table should look like this.
Is there anything that I could do to append it?
For records with fields 2, 3, 4, 5, 6, 8, and 9 with the same values, do you want the lowest "first" and the highest "last" or do you want a single line with the greatest difference between "first" and "last"? If the latter, what happens if two records have distinct ranges with the same difference (such as with the input lines:
should the output be:
or should it be one of the input lines). If one of the input lines, does it matter which one?
Does the order of the lines in the table in your output matter?
Why doesn't your sample output contain the 2nd header line from your sample input?
Why is there no | at the end of the last two lines of your sample input and the last line of your sample output?
Why isn't there a | at the start of the 1st header line in your sample input and output files?
Yes I want my output lines in mysql table to contain the lowest(first) and highest (last) value for a particular id_name and media value.
so as you mentioned I would like my table to contain entries like this :
or should it be one of the input lines). If one of the input lines, does it matter which one?
>Does the order of the lines in the table in your output matter?
The order of lines dont matter in my required mysql table
I missed the' | ' ! Error from my part.
---------- Post updated at 11:47 PM ---------- Previous update was at 11:31 PM ----------
@Don :
For the question :Why doesn't your sample output contain the 2nd header line from your sample input?
I am not sure whether you are asking for the small sample I provided or the input and final output.
Eithercase.
Considering the small snippet sample:
given input :
I take PSK_30s1207681L002 and media =5 and look for the smallest first entry and highest end value .
Hence in case of PSK_30s1207681L002 & media =5 I will have only one entry
The 2nd line in sample input is contained within the ranges
i e 14026 and 14838 falls within range 14026 and 15423
All of your sample input files contain the 2nd header line:
but the sample output does not contain that line. Should that line appear in the output or not?
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