postgresql - 删除时如何查看查询影响的行数

Question

我想看看我的删除查询影响了多少行，以便我知道它是正确的。

这可以使用 pgadmin 吗？

Answer 1

开始一个事务，删除然后回滚；

在 psql 中:

test1=> begin;
BEGIN
test1=> delete from test1 where test1_id = 1;
DELETE 2
test1=> rollback;
ROLLBACK

在 pgAdmin 中(在“输出 Pane ”的“历史”选项卡中):

-- Executing query:
begin;
Query returned successfully with no result in 16 ms.

-- Executing query:
delete from test1 where test1_id = 1;
Query returned successfully: 2 rows affected, 16 ms execution time.

-- Executing query:
rollback;
Query returned successfully with no result in 16 ms.