postgresql中查看操作执行的具体sql语句

1）在psql启动命令行中加入-E
例子：
C:\Users\Administrator>psql -E -h localhost -p 5432 postgres postgres
psql (9.5.1)
输入 "help" 来获取帮助信息.

postgres=# \d
********* 查询 **********
SELECT n.nspname as "Schema",c.relname as "Name",CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'mate
ialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'spe
ial' WHEN 'f' THEN 'foreign table' END as "Type",pg_catalog.pg_get_userbyid(c.relowner) as "Owner"
FROM pg_catalog.pg_class c
     LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('r','v','m','S','f','')
      AND n.nspname <> 'pg_catalog'
      AND n.nspname <> '@R_558_4045@ion_schema'
      AND n.nspname !~ '^pg_toast'
  AND pg_catalog.pg_table_is_visible(c.oid)
ORDER BY 1,2;
**************************

              关联列表
 架构模式 | 名称 |  类型  |  拥有者
----------+------+--------+----------
 public   | test | 数据表 | postgres
(1 行记录)
2）如果是已经进入的环境，想开启关闭：
\set ECHO_HIDDEN on|off
示例：
C:\Users\Administrator>psql -h localhost -p 5432 postgres postgres
psql (9.5.1)
输入 "help" 来获取帮助信息.

postgres=# \set ECHO_HIDDEN on
postgres=# \d
********* 查询 **********
SELECT n.nspname as "Schema",CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'm' THEN 'mater
ialized view' WHEN 'i' THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'spec
ial' WHEN 'f' THEN 'foreign table' END as "Type",2;
**************************

              关联列表
 架构模式 | 名称 |  类型  |  拥有者
----------+------+--------+----------
 public   | test | 数据表 | postgres
(1 行记录)


postgres=# \set ECHO_HIDDEN off
postgres=# \d
              关联列表
 架构模式 | 名称 |  类型  |  拥有者
----------+------+--------+----------
 public   | test | 数据表 | postgres
(1 行记录)


postgres=#