Help Center/ GaussDB/ Centralized_3.x/ Application Development Guide/ Development Based on libpq/ libpq API Reference/ Database Statement Execution Functions/ PQclear

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

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PQclear

Description

Releases the storage associated with PGresult. Any query result should be released by PQclear when it is no longer needed.

Prototype

void PQclear(PGresult* res);

Parameters

**Table 1** PQclear parameter
Keyword	Description
res	Object pointer that contains the query result.

Precautions

PGresult is not automatically released. That is, it does not disappear when a new query is submitted or even if you close the connection. To delete it, you must call PQclear. Otherwise, memory leakage occurs.

Parent topic: Database Statement Execution Functions

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