I know that both MySQL and Oracle provide command-line
utilities that support "bulk" loading into a table from
a text file (sqlload
in Oracle, mysqlimport). Presumably other RDBM's have
similar tools.
It is certainly true these utilities will operate a lot
faster than looping over a large set of rows
with an "insert" query in DBI, even when it's a prepared
query with parameters.
So this would make it worthwhile, if appropriate within
your application, to just dump your row-by-column array
into a suitable text file, and run the appropriate import
command in a "system()" or "exec()" or whatever.
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