Help Center/ GaussDB/ Developer Guide(Centralized_2.x)/ API Reference/ libpq/ Database Connection Control Functions/ PQconnectdb
Updated on 2023-10-23 GMT+08:00
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PQconnectdb

Function

PQconnectdb is used to establish a new connection with the database server.

Prototype

PGconn *PQconnectdb(const char *conninfo);

Parameter

Table 1 PQconnectdb parameter

Keyword

Parameter Description

conninfo

Connection string. For details about the fields in the string, see Link Parameters.

Return Value

PGconn * points to the object pointer that contains a connection. The memory is applied for 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.

Example

For details, see Example.