5
1
2
37
168
230
91
1. 连接数据库:db2 connect to study 2. 查询当前用户模式:select current schema from sysibm.sysdummy1 或 select current schema from sysibm.dual 3. 切换用户模式:set current schema toms 4. 切换用户: db2 connect to cps...