client_addr,age(clock_timestamp(), query_start),query from pg_stat_activity where pid<>pg_backend_pid() and state=\'active\' order by query_start desc;'-- all_reslove_session\setsession'select pid,usename,datnam
DB=# help --总的帮助 DB=# \h --SQL commands级的帮助 DB=# \? --psql commands级的帮助 按列显示,类似MySQL的\G DB=# \x Expanded display is on. 查看DB安装目录(最好root用户执行) find / -name initdb 查看有多少DB实例在运行(最好root用户执行) find / -name postgresql.conf 查看DB版本 c...
[commands] 显示反斜杠命令的帮助 \? options 显示在psql命令行选项的帮助 \? variables 显示某个变量的帮助 \h [NAME] SQL 命令语法上的说明,用 * 显示全部命令Query Buffer \e [FILE] [LINE] edit the query buffer (or file) with external editor \ef [FUNCNAME [LINE]] edit function definition wit...
variables show help on special variables \h [NAME] help on syntax of SQL commands, * for all commandsQuery Buffer \e [FILE] [LINE] edit the query buffer (or file) with external editor \ef [FUNCNAME [LINE]] edit function definition with external editor...Informational (o...
-e, --echo show the commands being sent to the server -i, --interactive prompt before deleting anything, and prompt for role name if not specified -V, --version output version information, then exit --if-exists don't report error if user doesn't exist ...
-e, --echo show the commands being sent to the server -q, --quiet don't write any messages -t, --table=TABLE cluster specific table(s) only -v, --verbose write a lot of output -V, --version output version information, then exit ...
# select 'could we still work'; ERROR: current transaction is aborted, commands ignored until end of transaction block postgres=!# 为什么要使用子查询,这个问题在上面的事务工作的情况下,一目了然因为在整个事务的设计中,很可能会报错,但是我将事务设计是按照一个连贯的逻辑来设计的,也就是即使出现了错误...
为了加以区分;我们定制SQL提示符;例如 代码语言:javascript 代码运行次数:0 运行 AI代码解释 lottu=# \set PROMPT1 '%`echo provider1=`' provider1= 5.1.1、创建测试表 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # 每个节点创建测试表; 订阅者创建的表可以无主键;若订阅者有主键,可利用序列自增来...
ERROR: database is not accepting commands to avoid wraparound data loss in database "testdb" 建议:Stop the postmaster and vacuum that database in single-user mode. You might also need to commit or roll back old prepared transactions, or drop stale replication slots 报错信息信息显示,数据库发...
; uncategorized SQLException; SQL state [25P02]; error code [0]; ERROR: current transaction is aborted, commands ignored until end of transaction block; nested exception is org.postgresql.util.PSQLException: ERROR: current transaction is aborted, commands ignored until end of transaction blockPostgres...