A seek() operation moves that pointer to some other part of the file so you can read or write at that place. So, if you want to read the whole file but skip the first 20 bytes, open the file, seek(20) …

Nov 7, 2012 · file.seek(offset[, whence]) Set the file’s current position, like stdio‘s fseek(). The whence argument is optional and defaults to os.SEEK_SET or 0 (absolute file positioning); …

Feb 27, 2012 · Index Seek. When SQL Server does a seek it knows where in the index that the data is going to be, so it loads up the index from disk, goes directly to the part of the index that …

Mar 28, 2013 · What this means is that when you use a std::basic_fstream, which by default uses a std::basic_filebuf, the single file position is moved by both seekp() and seekg(); unless you …

May 15, 2017 · Every individual seek, scan, lookup, or update on the specified index by one query execution is counted as a use of that index and increments the corresponding counter in this …

# seek back by difference from current position fp.seek(last_read_byte - fp.tell(), os.SEEK_CUR) B: # seek by absolute position from start of the file fp.seek(last_read_byte) (fp is a python file …

Dec 29, 2009 · A clustered index range seek that returns 138 rows is not your problem. Technically you can improve the seek performance by making the clustered index narrower: …

Additionally : when calling Seek(), even if no actual seek on the file system is needed (the seek position is within the buffer boundary), it will always cause data in the buffer to be copied (see …

Dec 18, 2014 · With this in mind, the very last byte of the file is the one found at (-1, SEEK_END) and thus the (-3, SEEK_END) byte is the 8. Note that this is consistent with how C usually …

Apr 19, 2012 · I have a query where a index seek (non clustered) is taking more time about 93% of the total execution time. the execution plan of the query, the estimated number of rows for …