Function check_bind_pos

db/bindings.c:16–22

#define NSEC_IN_SEC 1000000000

static size_t check_bind_pos(struct db_stmt *stmt)
{
	size_t pos = ++stmt->bind_pos;
	assert(pos < tal_count(stmt->bindings));

	return pos;
}

/* Local helpers once you have column number */
static bool db_column_is_null(struct db_stmt *stmt, int col)