* is ignored. */
#define C_PSQL_PAR_APPEND(buf, buf_len, parameter, value) \
if ((0 < (buf_len)) && (NULL != (value)) && ('\0' != *(value))) { \
* is ignored. */
#define C_PSQL_PAR_APPEND(buf, buf_len, parameter, value) \
if ((0 < (buf_len)) && (NULL != (value)) && ('\0' != *(value))) { \