pgping

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pgping   pgping PGPing PQpingParams; 该函数返回下列值之一： PQPING_OK 服务器

pgping 获得服务器状态不需要提供正确的用户名、口令或数据库名。不过，如果提供了不正确的值，服务器将记录一次失败的连接尝试。 PGPing PQping;

pgping You don't The PGPing return value is just an enumerated value There's nothing to free From srcinterfaceslibpq : 

pgping pgping works by reading your PGCONN environment variable and attempting to connect to it If it's able to establish a connection with the provided Postgres 

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