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mysql> repair table xs;+---------+--------+----------+----------+| Table | Op | Msg_type | Msg_text |+---------+--------+----------+----------+|... 阅读全文
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5.6中,发现其实alter column 和更改modify column 步骤是一样的mysql> create table xs(name varchar(12),age int default 5);Query OK, 0 rows affected (0.34 sec)mysql> ins... 阅读全文
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facebook 的oscshlomi noach openark toolkitpercona toolkitflexviews cdc 阅读全文
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char什么时候会用空格进行填充? 阅读全文
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innodb什么时候会把varchar转成blob 阅读全文
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mysql> set profiling=1;Query OK, 0 rows affected (0.00 sec)mysql> alter table test modify name varchar(10);Query OK, 3 rows affected (0.00 sec)Records... 阅读全文
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mysql> select version();+------------+| version() |+------------+| 5.1.73-log |+------------+1 row in set (0.00 sec)mysql> show variables like 'colla... 阅读全文