Mysql导入大表文件时注意修改参数
set global max_allowed_packet=100000000;
set global net_buffer_length=100000;
SET GLOBAL interactive_timeout=28800000;
SET GLOBAL wait_timeout=28800000;
SET GLOBAL myisam_max_sort_file_size=268435456000;
SET GLOBAL global myisam_sort_buffer_size=134217728;
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