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python Programming Glossary: fetchallWhy is the same SQLite query being 30 times slower when fetching only twice as many results? http://stackoverflow.com/questions/10531898/why-is-the-same-sqlite-query-being-30-times-slower-when-fetching-only-twice-as-m after running an sqlite query Is it normal that sqlite.fetchall is so slow How to use min and max in an efficient way . With.. time down to the sqlite query taking 100.95 seconds and fetchall taking 1485.43 . This was still not enough so after trying out.. the query time down to 0.08 seconds for one sample and the fetchall time down to 54.97 seconds. So I thought I finally managed to..
How to efficiently use MySQLDB SScursor? http://stackoverflow.com/questions/1808150/how-to-efficiently-use-mysqldb-sscursor don't really know how to exactly use them. Is doing a fetchall from a base cursor or a SScursor the same in term of memory..
Join with Pythons sqlite module is slower than doing it manually http://stackoverflow.com/questions/3134900/join-with-pythons-sqlite-module-is-slower-than-doing-it-manually annotations protein .append goterm I did the fetchall just to measure the execution time. Does anyone have an explanation.. cursor.execute SELECT Id PrimaryId FROM Proteins .fetchall annotationList cursor.execute SELECT ProteinId GOId FROM Annotations.. cursor.execute SELECT ProteinId GOId FROM Annotations .fetchall proteins dict proteinList annotations defaultdict list for protein..
How to get a row-by-row MySQL ResultSet in python http://stackoverflow.com/questions/337479/how-to-get-a-row-by-row-mysql-resultset-in-python SELECT item FROM items LIMIT d 1000 start_row rows cursor.fetchall if not rows break start_row 1000 # Do something with rows..... the higher start_row is. And no using fetchone instead of fetchall doesn't change anything. Clarification The naive code I use.. That is why it makes no difference if I use fetchone or fetchall . python mysql share improve this question I think you..
Python db-api: fetchone vs fetchmany vs fetchall http://stackoverflow.com/questions/5189997/python-db-api-fetchone-vs-fetchmany-vs-fetchall db api fetchone vs fetchmany vs fetchall I just had a discussion today with some coworkers about python's.. coworkers about python's db api fetchone vs fetchmany vs fetchall. I'm sure the use case for each of these is dependent on the.. what are the use cases for fetchone vs fetchmany vs fetchall In other words are the following equivalent or is there one..
What's the most efficient way to covert MySQL output into a NumPy array in Python? http://stackoverflow.com/questions/7061824/whats-the-most-efficient-way-to-covert-mysql-output-into-a-numpy-array-in-pytho db.cursor c.execute SELECT id rating from video results c.fetchall I need results to be a NumPy array and I'm looking to be economical.. numpy mysql python share improve this question The fetchall method actually returns an iterator and numpy has the fromiter..
cursor.rowcount always -1 in sqlite3 in python3k http://stackoverflow.com/questions/839069/cursor-rowcount-always-1-in-sqlite3-in-python3k say anywhere that rowcount will be updated after you do a fetchall so it is just wrong to assume that. share improve this answer..
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