PQgetvalue

Function

PQgetvalue is used to return a single field value of one row of a PGresult. Row and column numbers start from 0. The caller should not release the result directly. The result will be released when the associated PGresult handle is passed to PQclear.

Prototype

char *PQgetvalue(const PGresult *res,
                 int row_number,
                 int column_number);

Parameter

Table 1

Keyword	Parameter Description
res	Operation result handle.
row_number	Number of rows.
column_number	Number of columns.

Return Value

For data in text format, the value returned by PQgetvalue is a null-terminated string representation of the field value.

For binary data, the value is a binary representation determined by the typsend and typreceive functions of the data type.

If this field is left blank, an empty string is returned.

Example

For details, see Example.