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show variables like ‘max_%‘;
max_heap_table_size | 16777216 |
max_tmp_tables | 32 |
show variables like ‘tmp_%‘;
tmp_table_size | 1048576000 |
set global max_heap_table_size=1048576000
set global tmp_table_size=1048576000
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原文地址:http://www.cnblogs.com/ahuo/p/5977698.html