own MySQL.ini configuration

1、max_allowed_packet

    Today, when synchronizing the db of a friend's company, an error is always reported. I thought it was a problem with the company's db, but later found that the ht_mtr_price_grid_info table has only 27 pieces of data, but the data volume reaches 16912KB

I looked at the table structure and found that the ht_mtr_price_grid_info.processList field is of type longtext.

    Use the following sql to count the data volume of the ht_mtr_price_grid_info.processList field:

SELECT
	length(PROCESSLIST),
	length(PROCESSLIST) / 1024 AS kb,
	length(PROCESSLIST) / 1024 / 1024 AS MB
FROM
	ht_mtr_price_grid_info

Figure: The above sql execution result.

    So I changed max_allowed_packet=100M, synced the data again, successful!

(My default max_allowed_packet=4M)

Reference: Mysql execute large file sql statement