Function pure_sqlnull

pure-sql3/sql3util.c:91–95

static int32_t sqlnull_sym = 0; /* FIXME: TLD */

static inline pure_expr *pure_sqlnull(void)
{
  if (sqlnull_sym == 0) sqlnull_sym = pure_sym("sql3::SQLNULL");
  return pure_symbol(sqlnull_sym);
}

static inline bool pure_is_sqlnull(pure_expr *x)
{