16:37:59 SQL> select 'aaa' as 列A from dual;列A
---
aaa已用时间: 00: 00: 00.88
16:38:07 SQL> select 'aaa' 列A from dual;列A
---
aaa已用时间: 00: 00: 00.15
16:38:17 SQL>
---
aaa已用时间: 00: 00: 00.88
16:38:07 SQL> select 'aaa' 列A from dual;列A
---
aaa已用时间: 00: 00: 00.15
16:38:17 SQL>
解决方案 »
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