\! [命令] 在 shell 里执行命令或开启一个 shell 查询缓存区 \e [档案] 使用外部编辑器编辑查询缓存区(或档案) \g [档案] 将查询缓存区送至伺服器 (并把结果写入档案或 | 管线"pipe") \p 显示查询缓存区的内容 \r 重置(清除)查询缓存区 \w 档案 将查询缓存区写入档案 输入/输出 \echo [字串] 将字串
[COMMAND] execute commandinshell or start interactive shell Variables \prompt [TEXT] NAME prompt user to set internal variable \set [NAME [VALUE]] set internal variable, or list allifno parameters \unset NAME unset (delete) internal variable Large Objects \lo_export LOBOID FILE \lo_import FI...
9、显示隐藏的元命令 SQL 当您了解有关psql交互式 shell 的更多信息时，最后要知道的一件事是，可以查看运行的每个元命令的 SQL 查询。这是了解运行 PostgreSQL 实例的目录表更多信息的一种非常有用的方法。注意，通常会执行多个 SQL 查询以获得所需的输出，因此在您尝试了解特定内容时，仅在短时间内启用它通常很...
General\copyright show PostgreSQL usage and distribution terms\crosstabview [COLUMNS] execute query and display results in crosstab\errverbose show most recent error message at maximum verbosity\g [FILE] or ; execute query (and send results to file or |pipe)\gdesc describe result of query, witho...
execute := &pgproto3.Execute{} execute.Decode(data) buf := (&pgproto3.DataRow{Values: [][]byte{[]byte("tom")}}).Encode(nil) buf = (&pgproto3.CommandComplete{CommandTag: []byte("SELECT 1")}).Encode(buf) c.c.Write(buf) ...
Program Files → PostgreSQL 11.3 → SQL Shell(psql)Mac OS 我们直接搜索就可以了找到:进入命令行工具,我们可以使用 \help 来查看各个命令的语法 :postgres-# \help <command_name>例如,我们查看下 select 语句的语法:postgres=# \help SELECT Command: SELECT Description: retrieve rows from a table or view...
Now we have learned two ways of connection to a database and execute SQL statements on it:SQL Shell (psql) pgAdmin 4In the next chapters we will use the SQL Shell application to create tables and insert data into the database.If you want to use the pgAdmin interface instead, you can ...
# If multi_line_mode is set to "safe", in multi-line mode, [Enter] will always # insert a newline, and [Esc] [Enter] or [Alt]-[Enter] must be used to execute # a command. multi_line_mode = psql # Destructive warning mode will alert you before executing a sql statement # ...
\gset[PREFIX]execute query and store resultinpsql variables \gx[(OPTIONS)][FILE]as \g,but forces expanded output mode \q quit psql \watch[SEC]execute query every SEC seconds Help \?[commands]show help on backslash commands \?options show help on psql command-line options ...
sp_exec(vsql varchar) returns void --返回空 language plpgsql security definer --定义者权限 as $function$ begin execute vsql; end; $function$ ; --将对应模式的对应模式的函数给对应的模式的拥有者 alter function copyload.sp_exec(varchar) owner to copyload; --将对应模式的sp_exec函数授权给...