MySQL - how many rows can I insert in one single INSERT statement?

You will hit the max_allowed_packet limit and

error: 1390 Prepared statement contains too many placeholders.

You can put 65535 placeholders in one sql.So if you have two columns in one row,you can insert 32767 rows in one sql.

Import of 50K+ Records in MySQL Gives General error: 1390 Prepared statement contains too many placeholders