Question

Have the attributes LongReadLen and LongTruncOk when using DBD::mysql as driver for the Perl5 Database Interface (DBI) any meaning? I didn’t found these attributes in the DBD::mysql documentation but I found some example on the internet which uses these attributes with DBD::mysql.

Answer 1

If you search dbdimp.c I find:

 *
 *  Name:    dbd_st_blob_read
 *
 *  Purpose: Used for blob reads if the statement handles "LongTruncOk"
 *           attribute (currently not supported by DBD::mysql)

I could not find any reference to longreadlen. Note, I don’t use DBD::mysql myself and this was just a quick search in the code.