alter-table-pg-linux_2.4.2_64gb_smp_i686-cmp-mysql,pg

来自「开启mysql的远程连接的方法 mysql-noinstall-5.1.6-al」· 2_64GB_SMP_I686-CMP-MYSQL,PG 代码 · 共 15 行

Testing server 'PostgreSQL version 7.1.2' at 2001-06-12  1:16:18

Testing of ALTER TABLE
Testing with 1000 columns and 1000 rows in 20 steps
Insert data into the table
Time for insert (1000) 0 wallclock secs ( 0.27 usr  0.04 sys +  0.00 cusr  0.00 csys =  0.31 CPU)

Time for alter_table_add (992): 48 wallclock secs ( 0.31 usr  0.04 sys +  0.00 cusr  0.00 csys =  0.35 CPU)

Time for create_index (8):  1 wallclock secs ( 0.00 usr  0.00 sys +  0.00 cusr  0.00 csys =  0.00 CPU)

Time for drop_index (8):  0 wallclock secs ( 0.00 usr  0.00 sys +  0.00 cusr  0.00 csys =  0.00 CPU)

Total time: 50 wallclock secs ( 0.58 usr  0.08 sys +  0.00 cusr  0.00 csys =  0.66 CPU)