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      Help Center/ GaussDB/ Developer Guide(Distributed_V2.0-3.x)/ Application Development Guide/ Development Based on libpq/ libpq Interface Reference/ Database Connection Control Functions/ PQconnectdb

      PQconnectdb

      Updated on 2024-05-07 GMT+08:00
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      Description

      Establishes a new connection with the database server.

      Prototype

      PGconn* PQconnectdb(const char* conninfo);

      Parameter

      Table 1 PQconnectdb parameter

      Keyword

      Description

      conninfo

      Connection string. For details about the fields in the string, see section 5.6.4.5.

      Return Value

      PGconn * points to the object pointer that contains a connection. The memory is allocated by the function internally.

      Precautions

      • This function establishes a new database connection using the parameters taken from the string conninfo.
      • The input parameter can be empty, indicating that all default parameters can be used. It can contain one or more values separated by spaces or contain a URL.

      Examples

      For details, see Examples.

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