row 样本条款

row pg_ident.conf
row. 显示系统函数 postgres=# \dfS+ #查看连接数 postgres=# select count(*) from pg_stat_activity; -[ RECORD 1 ] count | 7 #查看当前最大的连接数 postgres=# select setting from pg_settings where name = 'max_connections'; setting 100

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