Igor Tandetnik,
 
>>> Explain the problem you are trying to solve, *not* your proposed solution. 
>>> <<<

 
      What we are trying to achieve is to to find the minimum row id for each 
unique Field Name in BLobLastNameTest where many rows can have the same 
FIELDNAME but distinct BLOBS(Vertices Column).
 
       Once we know  the first/minimum row id  of each unique fieldname group, 
we would like to write a sqlite UPDATE Statement to accumulate all the BLOB 
vertices of all the rows with that unique fieldname into the first(i.e 
MIN(ROWID))  row's BLOB(Vertices)column  for  each unique fieldname group.
 
    The reason we can't use select FieldName, rowid from BlobLastNameTest is 
that it would slow our C++ Windows/LINUx/Solaris UNIX worker threads so much 
that it wouldn;t be worth multithreading this whole process. We were hoping 
that the SQLITE query processor and the appropriate indexes could accomplish 
these previous 2 steps in a few minutes for a reasonable number of 
BLOBLASTNAMETEST rows. Thank you for all of your help. 
                                          
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