There are no performance overhead except when you are dragging a huge
chunk of information out of the database, in that case, python is
converting the data to its tuple data type which adds one more
processing.
I found this when I didn't have the priviledge to do "mysql> SELECT *
FROM TBL INTO OUTFILE;", I used python MySQLdb first, which I later
found sufficiently slower enough than using >>>system("echo 'USE db;
SELECT * FROM TBL;' |mysql >outfile")
But this is the minor case.
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