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trifficNov 24, 2015
1
这个字段是索引的一部分吗
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SoloCompanyNov 25, 2015
2
https://mariadb.com/kb/en/mariadb/alter-table/
When does ALTER TABLE copy all data? Here is a list of the actions that can be performed without having to copy the table: ... 显然,增加新的列不在这个列表内 |
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SmiteChowNov 25, 2015
3
无论慢不慢,请先备份
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