Firebird: iSQL中的查询执行时间

Question

我希望在iSQL中获得查询执行时间。

例如：

SELECT * FROM students;

如何获得查询执行时间？

Answer 1

使用SET STATS

SQL> SET STATS;
SQL> SELECT * FROM RDB$DATABASE;
... query output removed ....

Current memory = 34490656
Delta memory = 105360
Max memory = 34612544
Elapsed time= 0.59 sec
Buffers = 2048
Reads = 17
Writes 0
Fetches = 270
SQL>