摘要:
[root@iZ25oat874uZ data] time dd if=/dev/zero of=/var/test bs=8k count=1000000 1000000+0 records in 1000000+0 records out 8192000000 bytes (8.2 GB) co 阅读全文
摘要:
create procedure pFastCreateNums (cnt int unsigned) begin declare s int unsigned default 1; truncate table nums; insert into nums select s; while s 2 阅读全文
摘要:
create table t1(a int unsigned,b int unsigned); insert into t1 select 1,2; select 1 2 from t1; Error Code: 1690. BIGINT UNSIGNED value is out of range 阅读全文