alter-table-mysql-linux_2.0.36_i686-cmp-mysql,pg,solid

来自「开启mysql的远程连接的方法 mysql-noinstall-5.1.6-al」· 36_I686-CMP-MYSQL,PG,SOLID 代码 · 共 15 行

Testing server 'MySQL 3.22.18' at 1999-03-07 22:59:02

Testing of ALTER TABLE
Testing with 300 columns and 1000 rows in 20 steps
Insert data into the table
Time for insert (1000) 0 wallclock secs ( 0.06 usr  0.02 sys +  0.00 cusr  0.00 csys =  0.00 CPU secs)

Time for alter_table_add (293): 21 wallclock secs ( 0.08 usr  0.01 sys +  0.00 cusr  0.00 csys =  0.00 CPU secs)

Time for create_index (7):  1 wallclock secs ( 0.00 usr  0.00 sys +  0.00 cusr  0.00 csys =  0.00 CPU secs)

Time for drop_index (7):  1 wallclock secs ( 0.00 usr  0.00 sys +  0.00 cusr  0.00 csys =  0.00 CPU secs)

Total time: 23 wallclock secs ( 0.14 usr  0.03 sys +  0.00 cusr  0.00 csys =  0.00 CPU secs)