alter-table-mysql-linux_2.0.35_i686-cmp-adabas,mysql

开启mysql的远程连接的方法 mysql-noinstall-5.1.6-alpha-win32.zip

Testing server 'MySQL 3.22.9 beta' at 1998-10-20  6:55:25

Testing of ALTER TABLE
Testing with 254 columns and 1000 rows in 20 steps
Insert data into the table
Time for insert (1000) 0 secs ( 0.03 usr  0.14 sys =  0.17 cpu)

Time for alter_table_add (246): 21 secs ( 0.03 usr  0.08 sys =  0.11 cpu)

Time for create_index (8):  2 secs ( 0.00 usr  0.00 sys =  0.00 cpu)

Time for drop_index (8):  1 secs ( 0.00 usr  0.00 sys =  0.00 cpu)

Time for alter_table_drop (123): 15 secs ( 0.02 usr  0.11 sys =  0.13 cpu)

Total time: 39 secs ( 0.08 usr  0.33 sys =  0.41 cpu)